Table 1.
Baseline characteristics of the study population according to MDS categories (n = 3496).
| Characteristics | Mediterranean diet score | P-value | Missing value | ||
|---|---|---|---|---|---|
| Low (0-3) | Medium (4-5) | High (6-7) | |||
| Participants, n (%) | 816 (23.3) | 1602 (45.8) | 1078 (30.9) | ||
| Age (year), mean ± SD | 38.05 ± 9.08 | 38.50 ± 9.25 | 39.53 ± 9.30 | 0.001 | |
| Sex, n (%) | 0.072 | ||||
| Male | 354 (43.4) | 676 (42.2) | 416 (38.6) | ||
| Female | 462 (56.6) | 926 (57.8) | 662 (61.4) | ||
| BMI (Kg/m2), mean ± SD | 23.39 ± 3.75 | 23.46 ± 3.58 | 23.47 ± 3.71 | 0.866 | 1 |
| Annual household income (CNY), n (%) | <0.001 | 1 | |||
| <50,000 | 121 (14.8) | 177 (11.0) | 119 (11.0) | ||
| 50,000 ~ 100,000 | 241 (29.6) | 398 (24.8) | 269 (25.0) | ||
| 100,000 ~ 200,000 | 286 (35.1) | 617 (38.5) | 392 (36.4) | ||
| >200,000 | 167 (20.5) | 410 (25.6) | 298 (27.6) | ||
| Education level, n (%) | <0.001 | 384 | |||
| High school and below | 55 (7.7) | 77 (5.4) | 45 (4.6) | ||
| Undergraduate degree | 461 (64.3) | 772 (54.3) | 507 (52.2) | ||
| Postgraduate degree and above | 201 (28.0) | 574 (40.3) | 420 (43.2) | ||
| Smoking status, n (%) | 0.003 | 193 | |||
| Non-smoker | 640 (83.4) | 1307 (86.4) | 918 (89.6) | ||
| Current smoker | 109 (14.2) | 175 (11.6) | 85 (8.3) | ||
| Past smoker | 18 (2.3) | 30 (2.0) | 21 (2.1) | ||
| Alcohol drinking status, n (%) | 0.242 | ||||
| Non-drinker | 700 (85.8) | 1413 (88.2) | 961 (89.1) | ||
| Current drinker | 108 (13.2) | 173 (10.8) | 107 (9.9) | ||
| Past drinker | 8 (1.0) | 16 (1.0) | 10 (0.9) | ||
| Frequency of physical exercise, n (%) | <0.001 | 263 | |||
| Rarely | 456 (61.3) | 719 (48.1) | 359 (36.1) | ||
| 1–2 times/week | 176 (23.7) | 396 (26.5) | 316 (31.8) | ||
| ≥ 3 times/week | 112 (15.1) | 380 (25.4) | 319 (32.1) | ||
CNY, Chinese Yuan; MDS, Mediterranean diet score; SD, standard deviation.