Table 1 Demographic characteristics of the study populations
Item | Overall | Han nationality | Ethnic minority | P |
|---|---|---|---|---|
(n = 139) | (n = 62) | (n = 77) | ||
Age (years)§ | 44.94 (11.62) | 43.55 (9.42) | 46.05 (10.84) | 0.212 |
Sex (n, %) | Â | Â | Â | 0.538 |
 Male | 78 (56.1) | 33 (53.2) | 45 (58.4) |  |
 Female | 61 (43.9) | 29 (46.8) | 32 (41.6) |  |
Ethnicity (n, %) | ||||
 Han | 62 (44.6) |  |  |  |
 Uygur | 41 (29.5) |  |  |  |
 Kazak | 31 (22.3) |  |  |  |
 Others | 5 (3.6) |  |  |  |
Salary (yuan/month) (n, %) | Â | Â | Â | 0.223 |
  < 2000 | 46 (38.3) | 19 (46.3) | 27 (34.2) |  |
 2000–5000 | 30 (9.2) | 17 (12.2) | 13 (7.6) |  |
  > 5000 | 63 (52.5) | 27 (41.5) | 36 (58.2) |  |
Smoking (n, %) | Â | Â | Â | 0.999 |
 No | 63 (45.3) | 28 (45.2) | 35 (45.5) |  |
 Current | 58 (41.7) | 26 (41.9) | 32 (41.6) |  |
 Former | 18 (12.9) | 8 (12.9) | 10 (13.0) |  |
Alcohol (n, %) | Â | Â | Â | 0.746 |
 No | 65 (46.8) | 31 (50.0) | 34 (44.2) |  |
 Current | 61 (43.9) | 25 (40.3) | 36 (46.8) |  |
 Former | 13 (9.4) | 6 (9.7) | 7 (9.1) |  |
Height (m)§ | 1.68 (0.12) | 1.69 (0.16) | 1.67 (0.09) | 0.435 |
Weight (kg)§ | 66.05 (10.2) | 61.58 (8.71) | 69.65 (11.32) | 0.066 |
Highest education level (n, %) | Â | Â | Â | 0.278 |
 Primary school | 18 (12.9) | 5 (8.1) | 13 (16.9) |  |
 Junior high school | 21 (15.1) | 9 (14.5) | 12 (15.6) |  |
 Senior high school | 36 (25.9) | 20 (32.3) | 16 (20.8) |  |
 College | 64 (46.0) | 28 (45.2) | 36 (46.8) |  |
BMI (kg/m2) § | 23.33 (2.68) | 21.48 (2.15) | 24.82 (2.54) | 0.096 |