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Table 2 Work-related exposures of the participants in total and stratified by back pain status (n = 395)

From: Prevalence and influencing factors of chronic back pain among staff at special schools with multiple and severely handicapped children in Germany: results of a cross-sectional study

   Chronic back pain in the last 12 months
Work-related exposures Total Yes (=1) No (=0) aOR (95%-CI)a
Duration of employment (years) d     
 ≥ 30 22.0 44.8 55.2 1.90 (0.79-4.56)
 20 - 29 21.0 38.6 61.5 1.61 (0.76-3.44)
 10 - 19 29.1 47.0 53.0 2.51 (1.35-4.66)
 < 10 26.1 24.3 75.7 (Reference)
Hours working per week (hours) d     
 ≥ 40 7.1 35.7 64.3 0.89 (0.31-2.54)
 30 - 39 40.0 44.9 55.1 1.58 (0.88-2.82)
 20 - 29 31.4 33.1 66.9 0.98 (0.53-1.81)
 < 20 19.0 34.7 65.3 (Reference)
Carrying and lifting heavy loads (> 20 kg) d     
 Frequently 40.5 51.3 48.8 2.87 (1.68-4.92)
 Sometimes 30.6 33.1 66.9 1.25 (0.70-2.24)
 Rarely/Never 26.6 26.7 73.3 (Reference)
Working in an uncomfortable position d     
 Frequently 47.6 45.2 54.8 2.06 (1.17-3.64)
 Sometimes 30.6 34.7 65.3 1.29 (0.70-2.37)
 Rarely/Never 21.0 30.1 69.9 (Reference)
Exposure to environmental impacts d     
 Frequently 32.9 47.7 52.3 2.17 (1.31-3.57)
 Sometimes 28.9 39.5 60.5 1.57 (0.93-2.64)
 Rarely/Never 37.0 30.1 69.9 (Reference)
Psychosocial stressors in working atmosphere d     
 Frequently 11.1 52.3 47.7 1.95 (1.00-3.80)
 Sometimes 35.4 42.9 57.1 1.39 (0.89-2.18)
 Rarely/Never 51.4 34.0 66.0 (Reference)
Carry, lift, and transfer pupils     
 Yes 82.8 40.7 59.3 1.70 (0.96-3.00)
 No 17.2 29.4 70.6 (Reference)
Wash pupils     
 Yes 63.3 44.4 55.6 1.93 (1.24-3.01)
 No 36.7 29.0 71.0 (Reference)
Toilet assistance for pupils     
 Yes 86.3 40.8 59.2 2.03 (1.05-3.91)
 No 13.7 25.9 74.1 (Reference)
Change pupils´ diapers     
 Yes 78.2 42.1 57.9 2.07 (1.20-3.56)
 No 21.8 26.7 73.3 (Reference)
(Un-)dress pupils     
 Yes 88.9 41.0 59.0 2.79 (1.29-6.06)
 No 11.1 20.5 79.6 (Reference)
  1. Percentages in the second column ("Total") are column percentages, in the third ("Yes") and fourth column ("No") row percentages.
  2. aaOR: Odds Ratios adjusted for age (continuous) and sex; 95%-CI: 95%-Confidence Interval.
  3. bMissing values for duration of employment n = 7 (1.8%), hours working per week n = 10 (2.5%), carrying and lifting heavy loads n = 9 (2.3%), working in an uncomfortable position n = 3 (0.8%), exposure to environmental impacts n = 5 (1.3%), and psychosocial stressors in working atmosphere n = 8 (2.0%) are not displayed in the table.