Variables | Total n (%) | Current non-smoker n (%) | Current smoker n (%) | P-value |
---|---|---|---|---|
Area of residence |  |  |  | < 0.001 |
 Eastern regions | 5133 (57.1) | 2377 (46.3) | 2756 (53.7) |  |
 Central regions | 1812 (20.2) | 774 (42.7) | 1038 (57.3) |  |
 Western regions | 2045 (22.7) | 815 (39.9) | 1230 (60.1) |  |
Gender |  |  |  | < 0.001 |
 Male | 8623 (95.9) | 3737 (43.3) | 4886 (56.7) |  |
 Female | 367 (4.1) | 229 (62.4) | 138 (37.6) |  |
Age |  |  |  | < 0.001 |
 18–34 years | 3054 (34.0) | 1248 (40.9) | 1806 (59.1) |  |
 35–44 years | 3941 (43.8) | 1782 (45.2) | 2159 (54.8) |  |
  ≥ 45 years old | 1995 (22.2) | 936 (46.9) | 1059 (53.1) |  |
Marital status | Â | Â | Â | 0.107 |
 Unmarried | 610 (6.8) | 266 (43.6) | 344 (56.4) |  |
 Married | 7662 (85.2) | 3428 (44.7) | 4234 (55.3) |  |
 Divorced/Widowed/Remarried/Others | 718 (8.0) | 272 (37.9) | 446 (62.1) |  |
Educational level | Â | Â | Â | 0.827 |
 Junior high school and below | 2495 (27.8) | 1122 (45.0) | 1373 (55.0) |  |
 Vocational/Technical secondary school/High school | 4635 (51.6) | 1995 (43.0) | 2640 (57.0) |  |
 Junior college and above | 1860 (20.7) | 849 (45.6) | 1011 (54.4) |  |
The ratio of family burden | Â | Â | Â | 0.244 |
 Less than the gross dependency coefficient | 1220 (13.6) | 1906 (44.5) | 2374 (55.5) |  |
 Equal or more than the gross dependency coefficient | 7770 (86.4) | 2060 (43.7) | 2650 (56.3) |  |
working years as a full-time driver | Â | Â | Â | 0.399 |
  < 5 years | 6019 (67.0) | 2662 (44.2) | 3357 (55.8) |  |
 5–10 years | 1501 (16.7) | 679 (45.2) | 822 (54.8) |  |
  > 10 years | 1470 (16.4) | 625 (42.5) | 845 (57.5) |  |
working hours per day | Â | Â | Â | 0.005 |
  < 10 h | 3939 (43.8) | 1801 (45.7) | 2138 (54.3) |  |
 10–12 h | 2822 (31.4) | 1226 (43.4) | 1596 (56.6) |  |
  > 12 h | 2229 (24.8) | 939 (42.1) | 1290 (57.9) |  |
Period of work |  |  |  | < 0.001 |
 Daytime | 2581 (28.7) | 1282 (49.7) | 1299 (50.3) |  |
 Night | 246 (2.7) | 84 (34.1) | 162 (65.9) |  |
 Both daytime and night | 4624 (51.4) | 1959 (42.4) | 2665 (57.6) |  |
 Non-fixed working time | 1539 (17.1) | 641 (41.7) | 898 (58.3) |  |
Time spent per day outside the car to relax during work | Â | Â | Â | 0.266 |
  < 5 min | 4355 (48.4) | 1952 (44.8) | 2403 (55.2) |  |
 5–10 min | 3270 (36.4) | 1419 (43.4) | 1851 (56.6) |  |
  > 10 min | 1365 (15.2) | 595 (43.6) | 770 (56.4) |  |
Experiences of chronic illness | Â | Â | Â | 0.993 |
 Yes | 6240 (69.4) | 2753 (44.1) | 3487 (55.9) |  |
 No | 2750 (30.6) | 1213 (44.1) | 1537 (55.9) |  |
Self–reported health |  |  |  | 0.012 |
 Good | 2831 (31.5) | 1308 (46.2) | 1523 (53.8) |  |
 General | 3637 (40.5) | 1577 (43.4) | 2060 (56.6) |  |
 Poor | 2522 (28.1) | 1081 (42.9) | 1441 (57.1) |  |
Feelings of anxiety |  |  |  | < 0.001 |
 Never | 3225 (35.9) | 1511 (46.9) | 1714 (53.1) |  |
 Occasionally | 3546 (39.4) | 1534 (43.3) | 2012 (56.7) |  |
 Frequently | 2219 (24.7) | 921 (41.5) | 1298 (58.5) |  |
Current drinker |  |  |  | < 0.001 |
 Yes | 4325 (48.1) | 1610 (37.2) | 2715 (62.8) |  |
 No | 4665 (51.9) | 2356 (50.5) | 2309 (49.5) |  |
Eating habits |  |  |  | < 0.001 |
 Extremely regular | 2621 (29.2) | 1332 (50.8) | 1289 (49.2) |  |
 Regular in general | 1924 (21.4) | 922 (47.9) | 1002 (52.1) |  |
 Extremely irregularly | 4445 (49.4) | 1712 (38.5) | 2733 (61.5) |  |
Choice of place to eat |  |  |  | < 0.001 |
 mainly eating at home | 3795 (42.2) | 1808 (47.6) | 1987 (52.4) |  |
 mainly eating out | 5195 (57.8) | 2158 (41.5) | 3037 (58.5) |  |
Sleep duration per day |  |  |  | < 0.001 |
  < 6 h | 2407 (26.8) | 957 (39.8) | 1450 (60.2) |  |
 6–8 h | 5737 (63.8) | 2608 (45.5) | 3129 (54.5) |  |
  > 8 h | 846 (9.4) | 401 (47.4) | 445 (52.6) |  |
The number of days in a week of engaging in at least 10 min of moderate or vigorous exercise |  |  |  | < 0.001 |
 0 day | 5281 (58.7) | 2185 (41.4) | 3096 (58.6) |  |
 1–2 days | 2803 (31.2) | 1285 (45.8) | 1518 (54.2) |  |
  ≥ 3 days | 906 (10.1) | 496 (54.7) | 410 (45.3) |  |
Level of the initiative to acquire health knowledge |  |  |  | < 0.001 |
 Never | 1724 (19.2) | 647 (37.5) | 1077 (62.5) |  |
 Occasionally | 4471 (49.7) | 1864 (41.7) | 2607 (58.3) |  |
 Frequently | 2795 (31.1) | 1455 (52.1) | 1340 (47.9) |  |
Weight status |  |  |  | < 0.001 |
 Underweight | 394 (4.4) | 139 (35.3) | 255 (64.7) |  |
 Normal weight | 3815 (42.4) | 1619 (42.4) | 2196 (57.6) |  |
 Overweight | 4781 (53.2) | 2208 (46.2) | 2573 (53.8) |  |