Review

Climate change adaptation in Nigerian agricultural sector: A systematic review and resilience check of adaptation measures

  • Received: 26 August 2019 Accepted: 03 November 2019 Published: 15 November 2019
  • The changing climate is adversely affecting the productivity and livelihoods of Nigerian smallholder rural farmers. Several studies predict worsening outcomes for future climate events, for example heat waves, drought and intense precipitation. Farmers are required to adopt several measures to thrive, given the observed or expected climate change events. Existing studies about the interaction between climate change the agriculture sector has focused evaluating the bi-directional causal relationships, and identifying adaptation measures, but research on the climate resilience aspect of these adaptation measures is missing, or at best, low. This study aims to fill this gap in knowledge by assessing resilience and contribution to sustainability of farmer-adopted measures aimed at addressing risks posed by climate change. We conduct a systematic review of 95 studies concentrating on climate adaptation by smallholder rural farmers in Nigeria in the period 2010 to 2019. We assess the climate resilience of adaptation measures using the Ifejika-Speranza Resilience Check Toolkit. Our findings show that farmers are using climate-resilient adaptation measures; however, we could not ascertain how these have led to sustainable agricultural systems, since it is not the focus of the current study. Our findings show that majority of the adaptation studies in Nigeria are focused on crop farming subsystem. The major agricultural ecosystems and the broad adaptation areas are: Crop farming (improved soil and land management, crop-specific Innovation, water management practices, climate information services and education, access to finance, and off-farm diversification), livestock farming (improved livestock management systems, improved breeding strategies, sustainable health improvement, proper feed formulation early maturing and heat-resistant bird varieties), and fish farming (water harvesting measures, organic material, quick-maturing varieties).

    Citation: Robert Ugochukwu Onyeneke, Chinyere Augusta Nwajiuba, Chukwuemeka Chinonso Emenekwe, Anurika Nwajiuba, Chinenye Judith Onyeneke, Precious Ohalete, Uwazie Iyke Uwazie. Climate change adaptation in Nigerian agricultural sector: A systematic review and resilience check of adaptation measures[J]. AIMS Agriculture and Food, 2019, 4(4): 967-1006. doi: 10.3934/agrfood.2019.4.967

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  • The changing climate is adversely affecting the productivity and livelihoods of Nigerian smallholder rural farmers. Several studies predict worsening outcomes for future climate events, for example heat waves, drought and intense precipitation. Farmers are required to adopt several measures to thrive, given the observed or expected climate change events. Existing studies about the interaction between climate change the agriculture sector has focused evaluating the bi-directional causal relationships, and identifying adaptation measures, but research on the climate resilience aspect of these adaptation measures is missing, or at best, low. This study aims to fill this gap in knowledge by assessing resilience and contribution to sustainability of farmer-adopted measures aimed at addressing risks posed by climate change. We conduct a systematic review of 95 studies concentrating on climate adaptation by smallholder rural farmers in Nigeria in the period 2010 to 2019. We assess the climate resilience of adaptation measures using the Ifejika-Speranza Resilience Check Toolkit. Our findings show that farmers are using climate-resilient adaptation measures; however, we could not ascertain how these have led to sustainable agricultural systems, since it is not the focus of the current study. Our findings show that majority of the adaptation studies in Nigeria are focused on crop farming subsystem. The major agricultural ecosystems and the broad adaptation areas are: Crop farming (improved soil and land management, crop-specific Innovation, water management practices, climate information services and education, access to finance, and off-farm diversification), livestock farming (improved livestock management systems, improved breeding strategies, sustainable health improvement, proper feed formulation early maturing and heat-resistant bird varieties), and fish farming (water harvesting measures, organic material, quick-maturing varieties).


    Spinal pain has been a global public health problem for decades [1]. Depending on the segment of the spine in which the pain appears, spinal pain is divided into neck pain (NP), thoracic pain (TP) and low back pain (LBP). NP is defined as the pain localized in the anatomic region of the neck (from the superior nuchal line to the spine of the scapula, from the external occipital protuberance to the superior border clavicle and the suprasternal notch), with or without pain radiating to the head, trunk and upper limb (s). TP is defined as spinal pain with localization from the cervical–thoracic hinge (C7–T1) to the thoracic–lumbar junction (T12–L1). LBP is defined as pain, muscle tension and restricted mobility, typically between lower rib margins and inferior gluteal folds, with or without radiating pain to one or both legs [2][4]. LBP and NP are the more common spinal pains and the leading causes of population disability, regardless of sex and age [1],[5]. TP has been less studied, although this type of spinal pain is equally disabling and burdensome for the individual, community and work environment [6],[7]. Regardless of spinal pain type, the symptoms, etiology and consequences are generally the same. Potential risk factors that are associated with spinal pain are demographic, hereditary, lifestyle and occupational factors [8][10].

    Global epidemiological studies have reported that point-prevalence for LBP ranged from 1.0% to 58.1%, for NP ranged from 0 to 41.5% and for TP ranged from 4.0% to 72.0% [6],[11],[12]. In 19 European countries, the estimated one-year prevalence of LBP/NP ranged from 16.08 to 54.05% [13]. However, it was pointed out that the exact prevalence of spinal pain is difficult to determine due to the heterogeneity of the study methods, various definitions of spinal pain and data collection methods used by researchers [11],[12]. Moreover, several studies reported that many countries and regions lack data on population-based prevalence, risk factors and burden estimates for all three types of spinal pain [1],[5],[7]. The lack of prevalence data is particularly pronounced for the countries of the former Balkans, the geographical location of Bosnia and Herzegovina (BiH) [14]. Moreover, BiH was not included in the spinal pain prevalence European study, and we were unable to find such data in the published literature [13].

    Determining the exact prevalence of LBP and other types of spinal pain is important for many reasons for experts in this field. Pain prevalence studies enable the assessment of burden and are important for developing effective public health policies, as well as changing existing public health policies. Prevalence data may foster health experts in this field and research aimed at improving diagnosis and treatments. Additionally, knowledge of the exact disease prevalence can lead to changes in curricula for educating medical experts such as physiotherapists and nurses in terms of providing more study hours for the most prevalent conditions in this profession [15]. This study aimed to determine the prevalence and risk factors for spinal pain in BiH among the general population via an online questionnaire.

    This was a cross-sectional observational web-based survey. The design of the study was based on previous studies [16],[17]. An online survey using Google Forms (https://docs.google.com/forms/u/0/) was created and sent by multiple channels to contacts and groups of various organizations located across BiH (both health and non-health organizations). The invitation to participate in the study was published two weeks before the start of the study via the social networks Facebook, email, WhatsApp and Viber; the same call with a link to the survey questionnaire was repeated at the beginning of the study.

    We used a non-probabilistic sample stratified based on the geopolitical regions of BIH and demographic characteristics. The data were collected in November and December 2018, and the study was completed in January 2019.

    The study was approved by the Ethics Committee of the Faculty of Health Studies, University of Mostar, Mostar, BIH (approval number: 01-994/18 from October 19, 2018). In the introductory part of the questionnaire and the cover letter, the participants were informed about the study, their rights and that the completion of the survey will be considered their informed consent.

    Inclusion criteria were as follows: residents of BIH, aged ≥16 years of both sexes, having an email, Facebook, WhatsApp or Viber account for survey receipt.

    Exclusion criteria were as follows: age ≤15 years, persons not residing in BIH (if participants did not provide information about BIH canton of residence, they were excluded), missing data (we excluded participants with more than half missing answers in the questionnaire), discrepant data on the presence of spinal pain (in one part of the questionnaire the participants indicated that they had spinal pain, and in the other part of the questionnaire that they did not have it) and duplicates (multiple submissions with identical time zone data and personal data of participants).

    For the study, we designed a questionnaire based on a literature review [16],[18]. Pilot testing of the questionnaire for understanding, clarity and relevance was conducted before the start of the survey. It consisted of 29 questions about demographic characteristics and spinal pain. A detailed description and the full version of the questionnaire are in Appendix 1. To avoid recall bias, we asked participants about their present pain and its duration. The point prevalence was measured.

    Potential participants received a personal message (cover letter) with a written invitation about the study and a link to the study. Details are described in Appendix 1. Only the principal investigator (AH) had access to the stored data (Appendix 1).

    The sample size was determined by using computer software. According to the latest census data about the population in BIH from 2013, BIH had 2,987,440 inhabitants over 14 years of age in BIH. Based on the 95% confidence level, the population proportion of 50% and absolute precision of 5%, it was determined that 385 participants were needed. Assuming that the difference in the established prevalence between persons with spinal pain and those who do not have spinal pain is 10%, with an alpha value of 0.05%, a beta value of 0.2% and the power of study of 0.8, we calculated that a total of 782 participants were needed. However, to satisfy the study criteria, the representation of participants by geographical and demographic strata, and to improve the quality of the study, we decided to increase the sample size to meet as closely as possible the percentage of the BIH population according to the data of the 2013 Census.

    Sample weighting was performed before the start of data analysis by the variables of region, sex and age group. Study weight was ensured by stratification of participants based on geopolitical regions of BiH and demographic characteristics (sex, age). The required percentages for the specified variables were calculated by data from the 2013 BIH Census. The determined frequencies were converted into percentages; based on them, sample balancing was performed. Analyses of the results were performed through weighted and unweighted estimates, and due to the absence of significant differences, they were presented without weighted variables. The normality of the data distribution was tested by visual inspection of the histogram. Descriptive categorical variables were presented as frequencies and percentages, and quantitative variables were presented as mean and standard deviation. The significance of the difference between the categorical variables was analyzed by the Chi-square test. Quantitative variables' differences between the two groups were tested by the Independent Student t-test, and differences between the three groups were tested by one-way ANOVA. The association of factors with the presence of spinal pain was conducted by logistic regression through bivariate and multivariate analysis. Multivariate analysis was conducted through three models: Model I consisted of demographic and occupation factors; Model II consisted of demographic, occupational and hereditary factors; and Model III consisted of demographic, occupational, hereditary and behavioral factors. The significance of the differences in the regression analyses was tested by Wald's Chi-square test, and the results were presented as the prevalence ratio and 95% confidence interval of the prevalence ratio. The statistical significance was p < 0.05 in all analyses. Statistical software IBM SPSS Statistics 23 (Armonk, NY: IBM Corp.) was used for data analysis.

    The total number of sent invitations was 1682 (email n = 705, text messages n = 774, Facebook n = 203), and the total number of collected responses was 1048. From 1048 study responses, we excluded 3% of surveys (n = 31) due to inadequate age (n = 10), missing data (n = 7), false responses (n = 3), discrepant data (n = 5) and duplicates (n = 6).

    The final analysis included 1017 participants, of both sexes, aged from 16–78 years. The majority of participants were women (57%), aged 30–50 years, with a high-school education. Detailed socio-demographic characteristics of the participants are shown in Table 1.

    Table 1.  Socio-demographic characteristics of the surveyed population of Bosnia and Herzegovina.
    Variables Men
    (N = 434)
    Women
    (N = 583)
    Total
    (N = 1017)
    Age 45.6 (15.0) 38.1 (11.4) 41.3 (13.5)
    Age group
    16–29 years 62 (14.3) 142 (24.4) 204 (20.1)
    30–50 years 196 (45.2) 358 (61.4) 554 (54.5)
    ≥51years 176 (40.6) 83 (14.2) 259 (25.5)
    Height 182.6 (6.1) 170.4 (5.8) 175.6 (8.5)
    Weight 90.1 (12.7) 70.0 (11.2) 78.6 (15.5)
    BMI 27.0 (3.4) 24.1 (3.7) 25.3 (3.9)
    BMI classification
    Underweight - (-) 12 (2.1) 12 (1.2)
    Normal range 134 (30.9) 378 (64.8) 512 (50.3)
    Overweight 216 (49.8) 149 (25.6) 365 (35.9)
    Obese class I 84 (19.3) 44 (7.5) 128 (12.6)
    Obese class II - (-) - (-) - (-)
    Obese class III - (-) - (-) - (-)
    Educational level
    Students 10 (2.3) 29 (5) 39 (3.8)
    Elementary school 1 (0.2) 3 (0.5) 4 (0.4)
    High school 218 (50.2) 310 (53.2) 528 (51.)
    College 205 (47.2) 241 (41.3) 446 (43.9)
    Employment status (N = 978)
    Employed 356 (36.3) 486 (49.6) 842 (85.9)
    Unemployed 19 (2) 54 (5.5) 71 (7.5)
    Retired 51 (5.1) 14 (1.5) 65 (6.6)

    *Note: BMI: Body mass index; †mean (standard deviation); n (%); ‡ Without students.

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    A comparison of the sample with the BiH population based on the 2013 BiH Census demonstrated that they were similar (data not shown) for sex and regional residence. Age was also similar, although the 30 to 50 age group was slightly overrepresented, and the ≥51 age group was slightly underrepresented in the sample.

    The presence of global spinal pain was reported by 721 participants (70.9%): 440 (75.5%) women and 281 (64.7%) men (Table 2). Of the total number of reported spinal pain, 484 (67.1%) participants had LBP, 169 (23.4%) participants had NP, and 68 (9.4%) participants had TP. Women reported more NP and TP, and men reported more LBP. The prevalence of spinal pain, depending on the anatomical location, is shown in Figure 1.

    Table 2.  Point prevalence of spinal pain in surveyed population in Bosnia and Herzegovina.
    Variables Total
    N = 1017
    Spinal pain
    N = 721
    N (%)
    PR
    (95% CI of PR)
    Sex Men 434 281 (64.7) 1
    Women 583 440 (75.5) 1.67 (1.27–2.20)*
    Age 16–29 204 123 (60.3) 1
    30–50 554 423 (76.4) 2.13 (1.51–3.0)*
    ≥51 259 175 (67.6) 1.37 (0.94–2.01)
    BMI Underweight 12 4 (33.3) 1
    Normal range 512 355 (69.3) 4.52 (1.34–15.24)***
    Overweight 365 271 (74.2) 5.77 (1.70–19.6)**
    Obese class I 128 91 (71.1) 4.92 (1.40–17.3)***
    Education Student 39 22 (56.4) 1
    Elementary school 4 4 (100) - (-)
    High school 532 396 (74.4) 2.23 (1.15–4.32)***
    College 446 303 (67.9) 1.64 (0.84–3.18)
    Work Student 39 38 (97.4) - (-)
    Unemployed 71 34 (47.9) 1
    Employed 842 605 (71.9) 2.78 (1.70–4.53)*
    Retired 65 44 (67.7) 2.28 (1.14–4.58)***
    Type of work (N=844) Sedentary 553 395 (71.4) 1
    Physical 291 228 (78.4) 1.45 (1.04–2.02)***
    Hereditary (SP in parents) No 444 287 (64.6) 1
    Yes 573 434 (75.7) 1.71 (1.30–2.24)*
    Smoking No 712 491 (69) 1
    Yes 305 230 (75.4) 1.38 (1.02–1.87)***
    Physical activity (PA) No 299 210 (70.2) 1
    Yes 718 511 (71.2) 1.05 (0.78–1.41)
    Frequency of PA (day/week) (N = 718) 1–2 217 146 (67.3) 1
    3–4 191 123 (64.4) 0.88 (0.58–1.51)
    5–6 117 77 (65.8) 0.94 (0.52–1.51)
    Irregular 193 165 (85.5) 2.87 (1.75–4.68)*
    TV (Hours/day) 1–2 632 429 (67.9) 1
    2–3 297 226 (76.1) 1.51 (1.10–2.06)***
    4–5 88 292 (75.8) 1.42 (0.85–2.37)
    Computer/Mobile phone (Hours/day) 1–2 333 252 (75.7) 1
    3–4 273 189 (69.2) 0.72 (0.50–1.03)
    5–6 411 280 (68.1) 0.69 (0.50–0.95)***

    *Note: PR (95% CI): Prevalence ratio (95% confidence interval of prevalence ratio); BMI: Body mass index; *Statistical significance p < 0.001; **Statistical significance p < 0.01; ***Statistical significance p < 0.05; Excluded from analysis.

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    Figure 1.  Prevalence of spinal pain with regard to anatomic locations by sex and age group in the surveyed population of Bosnia and Herzegovina.

    In bivariate regression, significant associations with the presence of spinal pain were found for the following groups: women, aged 30 to 50 years, with high school education, employed and retired persons, physical work, smoking, irregular physical activity, watching TV 2 to 3 hours per day and use of a computer or cell phone 5 to 6 hours on a day. Likewise, the bivariate analysis found a statistically significant difference between normal and elevated body mass index, but due to the excessive range of the confidence interval, this result is questionable. No statistically significant difference was found in the repeated analysis without underweight body mass index (Table 2). Multivariate analysis confirmed statistically significant associations with the presence of spinal pain for the following groups: women, aged 30 to 50 years, employed and retired persons, spinal pain in parents and irregular physical activity (Table 3).

    The average intensity of current spinal pain on a scale from 0 to 10 was 5, without difference by sex, but a significant difference was found in the pain intensity score in different age groups (F (2) = 4.562; p = 0.011). Characteristics of spinal pain by sex are shown in Table 4. The mean pain intensity in the age group from 16 to 29 years was 4.6 (SD 2.0), in the age group from 30 to 50 years was 5.2 (SD 1.8) and in the age group ≥51 years was 5.2 (SD 1.2). More than half of the participants in the age group 30 to 50 years, as well as 51 years, reported moderate pain intensity (53.2% vs. 53.1%), while participants in the age group 16 to 29 years reported a higher percentage of mild pain (47.4%) (Figure 2).

    Table 3.  Multivariate analysis for the independent demographics, occupational, hereditary and behavioral factors associated in bivariate analysis (p < 0.02) with spinal pain in a surveyed population of Bosnia and Herzegovina.
    Variables Model I
    PR (95% CI)
    Model II
    PR (95% CI)
    Model III
    PR (95% CI)
    Sex
    Men 1 1 1
    Women 1.64 (1.21–2.21)** 1.60 (1.18–2.16)** 1.32 (0.89–1.96)
    Age
    16–29 1 1 1
    30–50 2.01 (1.36–2.99)* 2.17 (1.45–3.25)* 2.39 (1.45–3.92)**
    ≥51 1.45 (0.90–2.33) 1.70 (1.04–2.78)c 1.18 (0.98–1.44)
    Education
    Students 1 1 1
    High school 1.54 (0.74–3.20) 1.62 (0.78–3.39) 1.48 (0.62–3.52)
    College 1.08 (0.51–2.83) 1.09 (0.51–2.33) 0.99 (0.41–2.43)
    Employment status
    Unemployed 1 1 1
    Employed 2.85 (1.71–4.75)* 3.15 (1.87–5.31)* 3.53 (1.84–6.76)*
    Retired 2.91 (1.32–6.42)** 2.98 (1.34–6.65)** 1.60 (1.09–2.35)***
    Spinal pain in parents
    No 1 1
    Yes 1.86 (1.39–2.49)* 1.71 (1.19–2.45)**
    Frequency of physical activity
    1–2 days/week 1
    3–4 day/week 1.04 (0.67–1.61)
    5–6 days/week 1.19 (0.70–2.02)
    Irregular 2.88 (1.70–4.87)*
    Time watching TV
    1–2 hours/day 1
    3–4 hours/day 1.48 (0.99–2.23)
    4–5 hours/day 2.01 (0.92–4.38)

    *Note: PR: Prevalence ratio; 95% CI: 95% confidence interval; *Statistical significance p < 0.001; **Statistical significance p < 0.01; ***Statistical significance p < 0.05.

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    Figure 2.  Distribution of pain intensity expressed with visual analog scale (VAS) by age group in the surveyed population of Bosnia and Herzegovina.

    The mean pain intensity in participants who reported LBP and NP was 5.1 (SD 1.8 vs. 1.9), and in TP it was 4.8 (SD 1.5). The presence of pain up to 6 weeks was reported by 78 (46.2%) participants with NP, 36 (52.9%) with TP and 194 (40.1%) participants with LBP. Pain present for more than 12 weeks was reported by 74 (43.8%) participants with NP, 30 (44.1%) participants with TP and 257 (53.1%) participants with LBP.

    Diagnosed changes in the spine were confirmed by 40% of the participants; women had such a diagnosis more commonly than men (44% vs. 34%; p < 0.05). About 54% of participants sought the help of health professionals to relieve spinal pain; most commonly, they visited physiotherapists (52%). Medication use for the alleviation of spinal pain was confirmed by 34% of participants (Table 4).

    Knowledge of good posture during various daily activities and its importance in the prevention and treatment of spinal pain was reported by 71% of participants; men's affirmative answers were significantly higher than women's (77% vs. 66%). However, the use of good posture in everyday life was reported by only 25% of the participants (Table 4).

    Men were significantly longer on sick leave because of spinal pain compared to women (p < 0.001); absence from work or school for 3 ≥ days was confirmed by 72% of men, and 54% of women confirmed absence from work or school lasting from 1 to 2 days (Table 4).

    Table 4.  Characteristics and consequences of the presence of spinal pain by sex among a surveyed population of Bosnia and Herzegovina.
    Variables Total
    (N = 721)
    N (%)
    Men
    (N = 281)
    N (%)
    Women
    (N = 440)
    N (%)
    p
    Pain intensity (0–10 cm) 5.1 (1.8) 4.9 (1.7) 5.2 (1.8) 0.066
    Mild (2–4) 272 (38.2) 118 (42.6) 154 (35.4)
    Moderate (5–7) 366 (51.4) 136 (49.1) 230 (52.9) 0.097
    Strong (8–10) 74 (10.4) 23 (8.3) 51 (11.7)
    Duration of pain
    Up to 6 weeks 308 (42.5) 127 (45.2) 181 (41.1)
    6–12 weeks 52 (7.2) 23 (8.2) 29 (6.6) 0.307
    ≥12 weeks 361 (49.8) 131 (46.6) 230 (52.3)
    Localization of pain
    Stays in the region back 521 (72.3) 203(72.2) 318 (72.3) 0.993
    Spreads down the limbs 200 (27.7) 78(27.8) 122 (27.7)
    Frequency of pain
    Daily 268 (37.1) 82 (29.2) 186 (42.3)
    Once a week 104 (14.4) 42 (14.9) 62 (14.1) 0.001
    Once a month 73 (10.1) 27 (9.6) 46 (10.5)
    After severe activity 276 (38.3) 130 (46.3) 146 (33.2)
    Diagnostic (Herniated IVD) 289 (40.1) 96 (34.2) 193 (43.9) 0.010
    Medical help 387 (53.7) 144 (51.2) 243 (55.2) 0.296
    Type of medical help
    Family medicine 47 (12.1) 12 (8.3) 35 (14.3) 0.126
    Neurologist/Neurosurgeon 122 (31.4) 54 (37.5) 68 (27.9)
    Physiotherapy 203 (52.3) 73 (50.7) 130 (53.3)
    Someone else 16 (4.1) 5 (3.5) 11 (4.5)
    Medication use 247 (34.3) 86 (30.6) 161 (36.6) 0.099
    Medication frequency
    Daily 50 (20.2) 13 (15.1) 37 (23)
    Once a week 53 (21.5) 14 (16.3) 39 (24.2) 0.084
    Once a month 40 (16.2) 14 (16.3) 26 (16.1)
    Rarely 104 (42.1) 45 (52.3) 59 (36.6)
    Knowledge of proper posture* (YES) 508 (70.5) 216 (76.9) 292 (66.4) 0.003
    Use of proper posture (YES) 183 (25.4) 97 (34.5) 86 (19.5) <0.001
    Absence from work/school 246 (34.1) 95 (33.5) 151 (34.6) 0.760
    Frequency of absence
    1–2 day 110 (44) 26 (28) 84 (53.5)
    3–4 day 47 (18.8) 18 (19.4) 29 (18.5) <0.001
    5–7 day 26 (10.4) 14 (15.1) 12 (7.6)
    More than a week 67 (26.8) 35 (37.6) 32 (20.4)

    *Note: IVD: Intervertebral disk; Mean (standard deviation); Chi-Square test; Independent student t-test; *Proper posture in daily activities (standing, walking, sitting, lifting and walking).

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    The overall prevalence of spinal pain in the surveyed population of Bosnia and Herzegovina at the end of the year 2018, in a sample of the population aged 16–78 years, was 70.9%. LBP was the most common, with a prevalence of 67.2%, followed by NP (23.4%) and TP (9.4%). Women had a larger prevalence of NP and TP compared to men, while men had a larger prevalence of LBP (80.8% versus 58.4%). The largest prevalence of NP was found in participants aged 30 and 50 years, and LBP in those aged ≥51 years, while the prevalence of TP was found to be the same at age 50 and slightly lower at age ≥51 but with no statistical significance.

    A systematic review from 2019 (Fatoye and colleagues; n = 13 studies) reported that real-world prevalence for LBP ranged from 1.4% to 20.0%. However, these data were determined based on studies from different regions/countries, which are geographically sufficiently distant from our region [19]. In our study, the determined point-prevalence for NP and TP is in line with the estimated ranges of global point prevalence, while the determined point-prevalence for LBP is higher than the global point-prevalence range [6],[11],[12]. The high prevalence of LBP and NP among our population is congruent with the results of a study published in 2019, which processed data on pain syndromes from several European countries, geographically closer to our country [13].

    A lower incidence of TP compared to other spinal pain was also found in a study by Fouquet et al., which was published in 2015 and conducted in France between 2002 and 2005 among 3710 workers aged 20 to 59 years, as well as a higher susceptibility of women to TP [3]. In a systematic review by Briggs et al., which was published in 2009 and included 33 studies, the authors reported that the established prevalence point for TP ranges from 4–72% and that the higher prevalence of TP was found in childhood and adolescence, and especially in women [6]. These results are consistent with the findings of our study regarding the established prevalence and higher prevalence in women, except for the difference in prevalence based on age group, because we did not find differences in the prevalence of TP across age groups. However, in our study, we did not include participants younger than 16 years.

    Sex at the risk factor associated with spinal pain in our study is in line with the evidence of previously published studies [8],[10][12]. In our study, women were more susceptible to NP and TP, and men to LBP. A systematic review published in 2012 reported that the average prevalence of LBP in one year was 37%, the highest in middle age and more common in women. The median overall prevalence of LBP was higher among women in all age groups; women had a significantly higher point and a one-month prevalence, while in the one-year and lifetime prevalence, there was no significant difference between the sexes [20]. On the other hand, the systematic review by Fatoye et al., which was published in 2019, reported that the male sex had a significant association with LBP compared with women [19]. The 2010 Global Report also reports greater susceptibility of men to LBP compared to women [21]. Therefore, it appears that the research literature is still ambivalent regarding the susceptibility of LBP between sexes.

    In a cross-sectional study conducted in Spain between June 2006 to June 2007, which included 29,478 individuals aged ≥16, a higher prevalence of NP and LBP was found in women compared to men; the prevalence of NP was higher in individuals aged 51–70 years, and LBP in those aged >70 years [22]. The findings of that Spanish study were partially consistent with those of our study. Our findings on the association of women with the onset of NP, as well as the peak of NP prevalence in middle age, were also reported by other studies [23],[24].

    In addition to sex, significant associations with spinal pain in our study were identified for occupational factors, hereditary factors, irregular physical activity, watching TV ≥3 hours per day and using a computer or mobile phone ≥5 hours per day. The hereditary factor we studied, the presence of spinal pain in participants' parents, was significantly associated with the presence of spinal pain in participants and the anatomic location of the pain. LBP and TP were more prevalent in participants with this hereditary factor present, whereas NP was more prevalent in participants without this specific hereditary factor.

    According to a global study about occupational factors, published in 2005, 37% of LBP in the world is a result of the work environment as a risk factor, with a higher percentage in countries with lower health status [25]. NP was more common in participants with office (sedentary) jobs, and LBP in those with physical jobs [11]. In our study, there was no difference in the occurrences of NP, TP and LBP concerning the type of work, sedentary or physical, but employed persons and retired participants had a statistically significant risk of spinal pain compared to unemployed people. Considering the anatomical location of spinal pain, it is noticeable that employed persons had a higher prevalence of NP, compared to unemployed and retired people, while retired persons had a higher prevalence of LBP compared to employed and unemployed persons. In this study we did not study the type of occupation, so we could not stratify results based on different types of working environment.

    Insufficient or excessive physical activity may be an important factor for functional spinal pain, especially in the growing period [26]. We found that all types of spinal pain together had a significant association with irregular physical activity but not with physical inactivity. Irregular physical activity was not a significant factor for NP, TP and LBP when this association was analyzed for these conditions individually.

    This study had several limitations. We analyzed point prevalence and not lifetime prevalence, which is not necessarily comparable to other studies analyzing prevalence of spinal pain. The difficulty in comparing estimated prevalence due to research heterogeneity is a global problem because there is no uniform research methodology for such studies [11],[12]. We used online data collection as the simplest and most economically acceptable way to collect data. The limitation of this methodology may be reduced representativeness of the sample, as online data collection excludes access to individuals without internet access and potentially older individuals. However, to mitigate these issues as much as possible, we used a design weighted based on the number of inhabitants in the regions of BiH and their demographic characteristics (sex and age group). Moreover, a systematic review from 2016 reported similar representativeness of samples recruited on Facebook and known traditional methods [17].

    Despite limitations, we believe that our study is an important contribution due to reported lack of data on the prevalence of spinal pain syndrome in our geographical region [14]. We were unable to find any spinal pain prevalence data in BiH, so this could be the first study on this topic in BiH and may serve as a comparison for future spinal pain prevalence studies that will be conducted in BiH. Moreover, this study can serve as a “wake-up call” and the beginning of changes in health policy and health approaches in our country, which need to be in line with scientific recommendations for painful conditions [27][30].

    Future research in this area should aim to homogenize ways of determining the prevalence of spinal pain syndrome and associated risk factors, to enable comparison of data between different studies on pain prevalence. The problem of data heterogeneity in epidemiological research has been a problem for decades, which requires a global consensus about methodology recommendations, validated questionnaires and preferred statistical processing and interpretation of data.

    To our knowledge, this is the first study of prevalence of spinal pain in Bosnia and Herzegovina. The prevalence of spinal pain in the surveyed adult BiH population in 2018 was very high. Demographic factors associated with spinal pain were sex and age 30 to 50 years. Behavioral factors associated with spinal pain include work status, irregular physical activity and length of watching TV per day. Some of the factors associated with spinal pain are modifiable, and therefore interventions for their elimination should be considered as a public health measure.



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