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Table 1 Background characteristics, exposure and outcome measures of the study population stratified by occupational sector

From: Association between V̇O2max, handgrip strength, and musculoskeletal pain among construction and health care workers

  Total sample (n = 137) Construction (n = 65) Health care (n = 72) P-value*
N (%) Mean (SD) N (%) Mean (SD) N (%) Mean (SD)
Gender, (female) 58(42.3)   1(1.5)   57(79.2)   <0.001
Age, (years)   41.8(12)   40(13.2)   42.3(10.8) 0.086
BMI, (kg/m2)   25.5(3.8)   25.6(3.4)   25.5(4.2) 0.379
V̇O2max, (ml/min/kg), n = 126   34.9(10.5)   37.8(10.5)   32.2(9.9) <0.001
Strength (kg), median/range   43.5(24–77)   53(28–77)   33.5(24–67) <0.001
Musculoskeletal pain (>30d/y)
Total 71(51.8)   32(49.2)   39(54.2)   0.564
 Low back 37(27)   14(21.5)   23(31.9)   0.171
 Neck 31(22.6)   9(13.8)   22(30.6)   0.020
 Shoulders 53(38.7)   24(36.9)   29(40.3)   0.639
Part of working day with lifting in awkward positions        0.787
 Very little/not at all 91(66.4)   40(61.5)   51(70.8)   
 ¼ 31(22.6)   16(24.6)   15(20.8)  
 ½ 9(6.6)   4(6.2)   5(6.9)  
 ¾ 4(2.9)   3(4.6)   1(1.4)  
 Almost all time 2(1.5)   2(3.1)   0(0)  
Supportive and encouraging        0.578
leader and colleagues
 Very little/not at all 2(1.5)   1(1.5)   1(1.4)   
 Fairly small 5(3.7)   1(1.5)   4(5.7)  
 Somewhat 23(17)   14(21.5)   9(12.9)  
 Fairly much 75(55.6)   40(61.5)   35(50)  
 Very much 30(22.2)   9(13.8)   12(30)  
Smoking (yes) 39(28.3)   20(30.8)   19(26.4)   0.570
Light physical activity (hours per week)        0.399
 0 6 (4.3)   3 (4.6)   3 (4.2)   
 Less than 1 14 (10.1)   4 (6.2)   10(13.9)  
 1–2 36 (26.1)   20 (30.8)   16 (22.2)  
 3 or more 61 (44.2)   29 (44.6)   32 (44.4)  
Hard physical activity (hours per week)        0.677
 0 13 (9.4)   7 (10.8)   6 (8.3)   
 Less than 1 26 (18.8)   10 (15.4)   16 (22.2)  
 1–2 42 (30.4)   18 (27.7)   24 (33.3)  
 3 or more 39 (28.3)   20 (30.8)   19 (26.4)  
  1. *Tests for statistical significance comparing construction and health care workers were performed with Fisher’s exact test, Pearson Chi-square and Mann-Whitney U test when appropriate