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Table 1 The demographic characteristics and behavioral habits of the participants according to sleep duration (n = 9509)

From: Gender differences in the association between sleep duration and body mass index, percentage of body fat and visceral fat area among chinese adults: a cross-sectional study

Variables Sleep Duration P
< 7 h 7-9 h ≥ 9 h
Age 46.76 ± 14.547 44.83 ± 14.495 44.38 ± 15.158 < 0.001
Gender     0.074
  Women 723 (12.7%) 4308 (75.4%) 683 (11.9%)  
  Men 520 (13.7%) 2866 (75.5%) 409 (10.8%)  
Occupation     0.291
  Civil servants 333 (12.3%) 2050 (75.6%) 329 (12.1%)  
  Professionals 749 (13.6%) 4135 (75.3%) 610 (11.1%)  
  Other 161 (12.4%) 989 (75.9%) 513 (11.7%)  
Marriage status     0.137
  Unmarried 143 (11.5%) 943 (75.9%) 156 (12.6%)  
  Married 1067 (13.2%) 6095 (75.5%) 915 (11.3%)  
  Divorced/Widowed 33 (17.4%) 136 (71.6%) 21 (11.1%)  
Education level     0.245
  High school and below 119 (13.0%) 680 (74.5%) 114 (12.5%)  
  Bachelor degree 752 (13.3%) 4251 (74.9%) 672 (11.8%)  
  Postgraduate and above 372 (12.7%) 2243 (76.8%) 306 (10.5%)  
Smoking     < 0.001
  Yes 209 (19.9%) 757 (72.0%) 86 (8.2%)  
  Never 975 (12.0%) 6170 (76.0%) 969 (11.9%)  
  Former 59 (17.3%) 246 (71.9%) 37 (10.8%)  
Alcohol drinking     0.002
  Yes 230 (15.1%) 1118 (73.5%) 174 (11.4%)  
  Never 989 (12.5%) 5988 (76.0%) 905 (11.5%)  
  Former 24 (22.9%) 68 (64.8%) 13 (12.4%)  
Exercise     < 0.001
  Never 523 (15.3%) 2552 (74.6%) 348 (10.2%)  
  Occasional 373 (10.9%) 2565 (75.2%) 475 (13.9%)  
  Regular 347 (13.0%) 2057 (77.0%) 269 (10.1%)  
Subjective sleep quality     < 0.001
  Very Good 375 (10.9%) 2624 (76.5%) 432 (12.6%)  
  Good 619 (12.9%) 3643 (75.9%) 540 (11.2%)  
  Bad 223 (19.4%) 814 (70.9%) 111 (9.7%)  
  Very Bad 26 (20.3%) 93 (72.7%) 9 (7.0%)  
Chronic diseases     0.005
  Yes 332 (15.5%) 1565 (73.0%) 248 (11.6%)  
  No 907 (12.4%) 5591 (76.2%) 842 (11.5%)  
  Unknowing 4 (16.7%) 18 (75.0%) 2 (8.3%)  
Cancer     0.111
  Yes 12 (19.7%) 45 (73.8%) 4 (6.6%)  
  No 1230 (13.0%) 7120 (75.5%) 1084 (11.5%)  
  Unknowing 1 (7.1%) 9 (64.3%) 4 (28.6%)  
Regular medication in last three months    0.008
  Yes 127 (16.7%) 549 (72.1%) 85 (11.2%)  
  No 1116 (12.8%) 6625 (75.7%) 1007 (11.5%)