Table 4

Crude and adjusted logistic regression analysis for 7-day prevalence of low back pain and neck/shoulder pain among 597 Bolivian teachers using multiple imputation

7-day prevalence of low back pain*7-day prevalence of neck or shoulder pain*
n (%)OR (95% CI)aOR (95% CI)†n (%)OR (95% CI)aOR (95% CI)†
Age
 <40 years66 (21.4)11104 (33.8)11
 ≥40 years38 (13.1)0.56 (0.4 to 0.9)0.62 (0.4 to 1.0)70 (24.2)0.62 (0.4 to 0.9)0.77 (0.5 to 1.2)
Gender
 Male24 (14.4)1135 (21.0)11
 Female80 (18.6)1.36 (0.8 to 2.3)1.37 (0.8 to 2.4)139 (32.3)1.77 (1.2 to 2.7)1.80 (1.1 to 2.9)
Place of work
 Urban40 (16.0)1165 (26.0)11
 Rural64 (18.4)1.19 (0.8 to 1.8)0.88 (0.5 to 1.4)109 (31.4)1.30 (0.9 to 1.9)1.12 (0.7 to 1.7)
Teaching level
 Secondary47 (20.9)1177 (34.2)11
 Primary and secondary8 (9.8)0.42 (1.2 to 0.9)0.46 (0.2 to 1.1)18 (22.0)0.55 (0.3 to 1.0)0.59 (0.3 to 1.1)
 Primary49 (16.9)0.79 (0.5 to 1.1)0.87 (0.5 to 1.4)79 (27.2)0.71 (0.5 to 1.0)0.74 (0.5 to 1.1)
Extracurricular activities‡
 ≤10 hours per week57 (15.5)1187 (26.8)11
 >10 hours per week48 (17.6)1.01 (0.7 to 1.6)0.86 (0.5 to 1.4)87 (32.0)1.29 (0.9 to 1.9)1.15 (0.8 to 1.7)
Monthly income
 High (>US$476)24 (14.5)1139 (23.5)11
 Medium (US$239–US$476)20 (16.0)1.09 (0.6 to 2.1)0.85 (0.4 to 1.8)36 (28.8)1.29 (0.8 to 2.2)1.02 (0.6 to 1.8)
 Low (<US$238 USD)61 (19.9)1.46 (0.9 to 2.5)1.11 (0.6 to 2.0)99 (32.4)1.54 (1.0 to 2.4)1.18 (0.7 to 1.9)
Work posture (standing or walking)
 Never-most of the time31 (17.8)1150 (28.7)11
 Always73 (17.3)0.96 (0.6 to 1.6)1.01 (0.6 to 1.7)124 (29.3)1.05 (0.7 to 1.6)1.14 (0.7 to 1.8)
ERI
 ≤156 (13.3)11109 (25.9)11
 >148 (27.3)2.41 (1.4 to 4.0)2.27 (1.3 to 4.1)65 (36.9)1.70 (1.1 to 2.7)1.54 (0.9 to 2.5)
Overcommitment
 ≤Low/medium value60 (15.4)11103 (26.4)11
 >Higher value44 (21.2)1.52 (0.8 to 3.1)1.34 (0.7 to 2.5)71 (34.1)1.46 (0.8 to 2.6)1.29 (0.7 to 2.3)
  • *Spanish version of the Standardised Nordic questionnaire.

  • †aOR 95% CI: adjusted OR and 95% CI.

  • ‡Extracurricular activities: the sum of time in extracurricular activities including preparing school lessons, preparing teaching material, preparation of extraprogramme activities, interviews with parents or pupils, planning and teamwork, administrative duties, participation in courses and correcting class tests.

  • ERI, effort–reward imbalance.