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Table 1 Characteristics at first follow-up of newly educated female health care workers without previous history of LBP at baseline (n = 2,235)

From: The greatest risk for low-back pain among newly educated female health care workers; body weight or physical work load?

  Physical work demands Body mass index
Low (n = 363) Middle (n = 330) High (n = 302) P-value Normal (n = 798) Overweight (n = 382) Obese (n = 175) P-value
Physical work demand (Mean, SDa) 8.60 (2.86) 16.72 (2.19) 29.20 (6.76) <0.001* 17.31 (9.55) 17.36 (9.38) 18.81 (9.24) 0.265
Body mass index (Mean, SDa) 24.66 (4.54) 25.73 (5.51) 24.91 (5.57) 0.022* 22.08 (1.70) 27.07 (1.39) 34.80 (6.08) <0.001*
Age in years (Mean, SD) 36.90 (10.21) 35.58 (10.39) 34.44 (10.54) 0.010* 34.02 (10.79) 35.98 (10.56) 35.17 (9.76) 0.012*
Social support at work (Mean, SDa) 86.29 (9.80) 84.47 (11.13) 81.33 (12.60) <0.001* 84.20 (10.84) 83.44 (12.31) 83.79 (13.14) 0.574
Influence at work (Mean, SDa) 69.07 (20.45) 64.35 (19.87) 58.98 (21.60) <0.001* 64.97 (20.34) 61.54 (22.51) 64.21 (22.28) 0.071
Current smokers % 34.4% 32.5% 37.1% 0.237 38.8% 28.7% 32.6% 0.029*
Workplaces %
Elder care Center 42.5% 41.8% 39.2% 0.411 37.0% 42.1% 37.9% 0.247
Home care 29.7% 33.8% 30.6% 25.7% 28.8% 32.6%
Hospital 6.8% 3.4% 7.1% 6.3% 6.5% 1.5%
Other 21.0% 21.1% 23.1% 31.0% 22.6% 28.0%
  1. * p < 0.05
  2. a Standard Deviation.