Table 1.
Demographic characteristics of Chinese students in the survey.
| Characteristic | All Subjects n = 8752 |
Medical Students n = 4252 (48.6) |
Non-Medical Students n = 4500 (51.4) |
p-Value | |
|---|---|---|---|---|---|
| Sex, n (%) | Male | 3185 (43.7) | 1178 (37.9) | 2007 (48.0) | <0.001 |
| Female | 4103 (56.3) | 1930 (62.1) | 2173 (52.0) | ||
| Age, years, n (%) | Average | 20.90 ± 2.52 | 21.21 ± 2.60 | 20.60 ± 2.42 | <0.001 |
| <20 | 2250 (26.2) | 991 (23.6) | 1259 (28.7) | <0.001 | |
| 20–24 | 5736 (66.8) | 2754 (65.7) | 2982 (67.9) | ||
| 25–29 | 555 (6.5) | 429 (10.2) | 126 (2.9) | ||
| ≥30 | 45 (0.5) | 18 (0.4) | 27 (0.6) | ||
| BMI status, n (%) | Underweight | 1518 (17.7) | 718 (17.2) | 800 (18.1) | 0.469 |
| Normal | 5859 (68.2) | 2874 (68.8) | 2985 (67.7) | ||
| Overweight/obese | 1212 (14.1) | 587 (14.0) | 625 (14.2) | ||
| Annual per capita income, Yuan (RMB), n (%) | <5000 | 1972 (23.5) | 933 (22.3) | 1039 (24.6) | <0.001 |
| 5000–9999 | 1856 (22.1) | 990 (23.7) | 866 (20.5) | ||
| 10,000–29,999 | 2021 (24.0) | 1070 (25.6) | 951 (22.5) | ||
| 30,000–49,999 | 982 (11.7) | 504 (12.0) | 478 (11.3) | ||
| 50,000–99,999 | 981 (11.7) | 458 (10.9) | 523 (12.4) | ||
| >100,000 | 594 (7.1) | 228 (5.5) | 336 (8.7) | ||
| Area of residence, n (%) | Northeast China | 623 (7.3) | 523 (12.6) | 100 (2.3) | <0.001 |
| Northern China | 1312 (15.5) | 245 (5.9) | 1067 (24.6) | ||
| Central China | 737 (8.7) | 140 (3.4) | 597 (13.8) | ||
| Eastern China | 3847 (45.3) | 2492 (59.9) | 1355 (31.3) | ||
| Southwest China | 1059 (12.5) | 196 (4.7) | 863 (19.9) | ||
| Southern China | 449 (5.3) | 338 (8.1) | 111 (2.6) | ||
| Northwest China | 450 (5.3) | 222 (5.3) | 228 (5.3) | ||
| Overseas | 13 (0.2) | 5 (0.1) | 8 (0.2) | ||
| Self-reported health status, n (%) | Excellent | 1696 (19.5) | 807 (19.0) | 889 (19.9) | <0.001 |
| Very good | 3500 (40.2) | 1810 (42.6) | 1690 (37.8) | ||
| Good | 2958 (34.0) | 1413 (33.3) | 1545 (34.6) | ||
| Fair | 362 (4.2) | 160 (3.8) | 202 (4.5) | ||
| Poor | 75 (0.9) | 16 (0.4) | 59 (1.3) | ||
| Unclear | 120 (1.4) | 39 (0.9) | 81 (1.8) | ||
| Chronic disease, n (%) | Absent | 5980 (68.6) | 3132 (73.8) | 2848 (63.6) | <0.001 |
| Present | 552 (6.3) | 234 (5.5) | 317 (7.1) | ||
| Unclear | 2188 (25.1) | 877 (20.7) | 1311 (29.3) | ||
mean ± standard deviation; frequency (percentage). BMI body mass index. Chi-squared test.