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Table 1 Baseline demographics, work-, health- and lifestyle variables for all healthcare workers and for the low, moderate and high exposure groups

From: Physical exposure during patient transfer and risk of back injury & low-back pain: prospective cohort study

  All Low Moderate High
Variable Mean SD % Mean SD % Mean SD % Mean SD %
N 1285    321    643    321   
Female    100    100    100    100
Age (y) 46.8 11.3   45.3 11.3   46.3 11.6   49.1 10.3  
BMI 24.9 4.6   25.0 4.7   25.2 4.9   24.3 3.6  
Smokers    9.0    9.3    8.9    7.8
Years in profession 17.8 11.9   16.1 11.0   17.6 12.3   19.6 11.6  
Working hours/week 34.7 3.4   34.8 3.3   34.7 3.3   34.7 3.5  
LBP within the previous 4 weeks (0–10) 1.5 1.6   1.5 1.6   1.5 1.7   1.4 1.6  
Back injuries within the previous 12 months 0    0    0    0   
Frequency of patient transfers with more than 1 healthcare worker:
 0/4    3.5    2.9    2.2    6.7
 1/4    19.4    12.8    25.2    14.3
 2/4    30.8    29.1    35.0    23.9
 3/4    26.4    35.8    25.8    18.4
 4/4    19.9    19.4    11.9    36.8
Frequency of patient transfers with patients being so self-reliant that no assistive device is necessary:
 0/4    17.5    32.9    13.8    9.8
 1/4    31.3    30.4    34.7    25.4
 2/4    30.9    23.0    34.2    32.1
 3/4    20.3    13.7    17.3    32.7
 4/4    0    0    0    0
Level of leisure-time physical activity within the previous 12 months:
 Sedentary    5.1    4.7    6.1    3.7
 Light exercise > 3/week    63.4    60.4    66.1    61.4
 Moderate exercise > 3/week    28.3    30.8    25.0    31.5
 Vigorous exercise several times per week    3.2    4.1    2.8    3.4