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Table 1 Mean Body Mass Index in Relation to Socio-demographics and Working Conditions in both Genders

From: Psychosocial and other working conditions in relation to body mass index in a representative sample of Australian workers

  Men (N = 519)** Women (N = 531)
  BMI (SD) N (%) p value* BMI (SD) N (%) p value*
Age    <0.001    <0.001
   < 30 years 24.3 (3.2) 118 (22.7)   22.7 (4.8) 125 (23.5)  
   30–40 years 26.0 (4.5) 157 (30.3)   24.7 (4.7) 150 (28.2)  
   41–50 years 26.8 (3.8) 122 (23.5)   24.9 (4.4) 149 (28.1)  
   ? 51 years 27.2 (5.0) 122 (23.5)   25.7 (4.8) 107 (20.2)  
Educational level    0.037    0.036
   Post-graduate 26.1 (4.7) 47 (9.1)   24.4 (3.8) 52 (9.8)  
   Undergraduate 25.9 (3.7) 128 (24.9)   24.5 (4.8) 204 (38.6)  
   Vocational 26.6 (3.9) 127 (24.7)   24.0 (4.4) 71 (13.4)  
   High school 24.9 (5.1) 89 (17.3)   23.5 (4.5) 101 (19.1)  
   Primary or secondary 26.7 (4.6) 123 (23.9)   25.5 (5.3) 101 (19.1)  
Marital status    <0.001    0.004
   Living as a couple 25.1 (4.0) 216 (41.6)   23.8 (4.8) 230 (43.4)  
   Living alone 26.8 (4.4) 303 (58.4)   25.0 (4.7) 300 (56.6)  
Living with children    0.767    0.536
   No 26.1 (4.4) 294 (56.6)   24.4 (5.2) 272 (51.3)  
   Yes 26.2 (4.2) 225 (43.4)   24.6 (4.3) 258 (48.7)  
Hostility    0.975    0.359
   Low 26.1 (4.1) 272 (52.4)   24.7 (5.0) 243 (45.8)  
   High 26.1 (4.6) 247 (47.6)   24.3 (4.6) 288 (54.2)  
Occupational category    0.531    0.156
   Upper white collar 26.1 (3.9) 152 (29.3)   24.9 (4.7) 198 (37.3)  
   Middle white collar 25.7 (4.8) 122 (23.5)   24.4 (4.8) 266 (50.1)  
   Blue collar 26.3 (4.3) 245 (47.2)   23.6 (4.7) 67 (12.6)  
Hour worked    <0.001    0.467
   <35 hours 24.2 (3.3) 77 (15.3)   24.6 (4.7) 241 (46.9)  
   35 to 49 hours 26.2 (4.4) 258 (51.3)   24.2 (5.1) 198 (38.5)  
   >49 hours 26.9 (4.0) 168 (33.4)   24.9 (4.5) 75 (14.6)  
Psychological work demand    0.162    0.473
   Low 25.8 (3.9) 293 (59.1)   24.3 (4.9) 271 (52.0)  
   High 26.3 (4.8) 203 (40.9)   24.6 (4.7) 250 (48.0)  
Control    0.144    0.119
   High 26.4 (4.2) 255 (49.2)   24.9 (4.6) 214 (41.0)  
   Low 25.8 (4.4) 263 (50.8)   24.2 (4.8) 308 (59.0)  
Demand/Control    0.151    0.479
   Low strain 26.1 (4.3) 138 (27.9)   24.8 (4.5) 99 (19.3)  
   Active jobs 26.6 (4.1) 110 (22.2)   24.8 (4.6) 112 (21.8)  
   Passive jobs 25.5 (3.6) 155 (31.3)   24.0 (4.9) 167 (32.6)  
   Job strain 26.1 (5.5) 92 (18.6)   24.4 (4.8) 135 (26.3)  
Effort    0.004    0.338
   Low 25.6 (3.8) 290 (56.8)   24.3 (4.7) 282 (53.9)  
   High 26.7 (4.9) 221 (43.2)   24.7 (4.9) 241 (46.1)  
Reward    0.938    0.024
   High 26.0 (3.7) 228 (47.7)   24.9 (4.7) 261 (51.0)  
   Low 26.0 (5.0) 250 (52.3)   24.0 (4.7) 251 (49.0)  
Effort/Reward ratio    0.898    0.404
   ? 1: Balance 26.0 (4.4) 455 (96.0)   24.5 (4.7) 488 (96.4)  
   > 1: Imbalance 25.9 (4.0) 19 (4.0)   23.6 (4.1) 18 (3.6)  
Physical work demand    0.009    0.388
   Low 26.7 (4.3) 202 (39.2)   24.3 (4.6) 258 (48.9)  
   High 25.7 (4.3) 313 (60.8)   24.7 (4.9) 270 (51.1)  
Shift work    0.262    0.823
   No 26.2 (4.3) 454 (87.5)   24.5 (4.9) 466 (87.8)  
   Yes 25.5 (4.6) 65 (12.5)   24.6 (4.0) 65 (12.2)  
  1. *Analysis of variance.
  2. ** The original sample consisted of 526 men and 575 women. BMI information was missing for 7 men so this table shows data only for (526-7) = 519 men. BMI information was missing for 43 women and one women with BMI >60 was dropped from the analysis so this table shows data only for (574-43-1) = 531 women.