Comparison of general characteristics
| Variables | Overall (n=2605) | With MAFLD (n=726) | Without MAFLD (n=1879) | P value* |
| Age (years), M (IQR) | 45 (33, 52) | 43 (31, 51) | 48 (38, 54) | <0.001 |
| Gender, n (%) | <0.001 | |||
| Males | 1471 (56.5) | 584 (80.4) | 887 (47.2) | |
| Females | 1134 (43.5) | 142 (19.6) | 992 (52.8) | |
| Marital status, n (%) | <0.001 | |||
| Single | 378 (14.5) | 68 (9.4) | 310 (16.5) | |
| Married | 2209 (84.8) | 652 (89.8) | 1557 (82.9) | |
| Divorced | 9 (0.4) | 2 (0.3) | 7 (0.4) | |
| Widowed | 9 (0.4) | 4 (0.6) | 5 (0.3) | |
| Educational level, n (%) | 0.032 | |||
| Bachelor’s degree or above | 913 (35.1) | 228 (31.4) | 685 (36.5) | |
| Junior college | 603 (23.2) | 172 (23.7) | 431 (22.9) | |
| Senior high school | 593 (22.8) | 189 (26.0) | 404 (21.5) | |
| Junior high school | 319 (12.3) | 87 (12.0) | 232 (12.3) | |
| Primary school | 140 (5.4) | 35 (4.8) | 105 (5.6) | |
| Illiteracy | 37 (1.4) | 15 (2.1) | 22 (1.2) | |
| Income (yuan/month), n (%) | 0.066 | |||
| <2000 | 147 (5.6) | 35 (4.8) | 112 (6.0) | |
| 2000–3000 | 794 (30.5) | 202 (27.8) | 592 (31.5) | |
| ≥3000 | 1664 (63.9) | 489 (67.4) | 1175 (62.5) | |
| Smoking status, n (%) | <0.001 | |||
| Never | 1916 (73.6) | 448 (61.7) | 1468 (78.1) | |
| Former | 113 (4.3) | 45 (6.2) | 68 (3.6) | |
| Current | 576 (22.1) | 233 (32.1) | 343 (18.3) | |
| Drinking status, n (%) | <0.001 | |||
| Never | 1624 (62.3) | 389 (53.6) | 1235 (65.7) | |
| Former | 42 (1.6) | 15 (2.1) | 27 (1.4) | |
| Current | 939 (36.1) | 322 (44.4) | 617 (32.8) | |
| Tea drinking status, n (%) | <0.001 | |||
| Never | 1052 (40.4) | 205 (28.2) | 847 (45.1) | |
| Former | 8 (0.3) | 3 (0.4) | 5 (0.3) | |
| Current | 1545 (59.3) | 518 (71.3) | 1027 (54.7) | |
| History of diabetes, n (%) | <0.001 | |||
| No | 2459 (94.4) | 650 (89.5) | 1809 (96.3) | |
| Yes | 146 (5.6) | 76 (10.5) | 70 (3.7) | |
| History of hypertension, n (%) | <0.001 | |||
| No | 1666 (64.0) | 294 (40.5) | 1372 (73.0) | |
| Yes | 939 (36.1) | 432 (59.5) | 507 (27.0) |
Data are presented as median with the IQR (M (P25, P75)).
*Comparison of the differences between the groups calculated by Mann-Whitney U or χ2 tests.