Table 1.
Socio-demographic characteristics of the participants
| Parameters | Total sample (n = 829) | International students | Chinese students | x2/t/z |
|---|---|---|---|---|
| Age | 23.04 ± 3.30 | 22.95 ± 3.90 | 21.63 ± 2.77 | t = −6.49* |
| Gender | ||||
| Female | 498(60.1%) | 221 (68%) | 277(55%) | ×2 = 14.00* |
| Male | 331 (39.9%) | 104 (32%) | 227(45%) | |
| BMI | ||||
| < 18.5 | 74 (8.9%) | 32 (9.8%) | 42 (8.3%) | ×2 = 21.03* |
| 18.6–24.9 | 596 (71.9%) | 256 (78.8%) | 340 (67.5%) | |
| 25.0–29.9 | 119 (14.4%) | 27 (8.3%) | 92 (18.3%) | |
| ≥ 30 | 40 (4.8%) | 10(3.1%) | 30 (6.0%) | |
| Level of Education | ||||
| Sophomore/freshman year | 628 (77.0%) | 245(75.4%) | 393 (78.0%) | ×2 = 23.04* |
| Senior year | 168(20.25%) | 60(18.5%) | 108(21.4%) | |
| Post-graduate | 23(2.8%) | 20 (6.2%) | 3(0.6) | |
| Students’ major | ||||
| Medical | 653(78.8%) | 298(91.7% | 355(70.4%) | ×2 = 53.38* |
| Non-Medical | 176(21.2%) | 27(8.3%) | 149(29.6%) | |
| Smoking Status | ||||
| Current Smoker | 73 (8.8%) | 59 (18.2%) | 14 (2.8%) | ×2 = 58.172* |
| Non-smoker | 756 (91.2%) | 266 (81.8%) | 490 (97.2%) | |
| Alcohol Consumption | ||||
| drinker | 254 (30.6%) | 141(43.60%) | 113(22.4%) | ×2 = 40.862* |
| Non-drinker | 575 (69.4%) | 184 (56.40%) | 391 (77.6%) | |
| Financial Status (RMB) | ||||
| ≤ 1000 | 221(26.7%) | 104 (32.0%) | 117(23.3%) | ×2 = 52.23* |
| 1000 ~ 2000 | 464(56.0%) | 203 (62.5%) | 261(51.9%) | |
| > 2000 | 143 (17.3%) | 18 (5.5%) | 126 (24.9%) | |
| Length of stay in Dalian (yrs.) | 1(1) | 2.0 (1.00) | z = −1.202* | |
*P ≤ 0.05