Baseline characteristics of the Ningbo Schizophrenia Cohort
| Survivors | Non-survivors | Overall | |
| N=22 394 | N=4505 | N=26 899 | |
| N (%) | N (%) | N (%) | |
| Sex | |||
| Male | 9805 (43.8) | 2184 (48.5) | 11 989 (44.6) |
| Female | 12 589 (56.2) | 2321 (51.5) | 14 910 (55.4) |
| Age at diagnosis (years) | |||
| <29 | 8012 (35.8) | 1188 (26.4) | 9200 (34.2) |
| 30–39 | 6037 (27.0) | 1020 (22.6) | 7057 (26.2) |
| 40–49 | 4450 (19.9) | 1019 (22.6) | 5469 (20.3) |
| >50 | 3895 (17.4) | 1278 (28.4) | 5173 (19.2) |
| Median (IQR) | 34 (26–45) | 40 (29–51) | 35 (26–46) |
| Marital status | |||
| Unmarried | 5699 (25.5) | 1005 (22.3) | 6704 (24.9) |
| Married | 13 654 (61.0) | 2582 (57.3) | 16 236 (60.4) |
| Widowed | 1005 (4.5) | 570 (12.7) | 1575 (5.9) |
| Divorced | 2015 (9.0) | 335 (7.4) | 2350 (8.7) |
| Unclear | 21 (0.1) | 13 (0.3) | 34 (0.1) |
| Years of education | |||
| <7 | 10 925 (48.8) | 3352 (74.4) | 14 277 (53.1) |
| 7–9 | 7094 (31.7) | 815 (18.1) | 7909 (29.4) |
| 10–12 | 2406 (10.7) | 206 (4.6) | 2612 (9.7) |
| >12 | 1337 (6.0) | 67 (1.5) | 1404 (5.2) |
| Unclear | 632 (2.8) | 65 (1.4) | 697 (2.6) |
| Ethnicity | |||
| Han | 22 350 (99.8) | 4502 (99.9) | 26 852 (99.8) |
| Others | 44 (0.2) | 3 (0.1) | 47 (0.2) |
| Occupation | |||
| Workers | 2131 (9.5) | 125 (2.8) | 2256 (8.4) |
| Managers | 33 (0.1) | 1 (0.0) | 34 (0.1) |
| Farmers | 8868 (39.6) | 2542 (56.4) | 11 410 (42.4) |
| Laid-off or unemployed | 6567 (29.3) | 1000 (22.2) | 7567 (28.1) |
| Student | 35 (0.2) | 3 (0.1) | 38 (0.1) |
| Retired | 1617 (7.2) | 297 (6.6) | 1914 (7.1) |
| Professionals and technicians | 184 (0.8) | 14 (0.3) | 198 (0.7) |
| Others | 1969 (8.8) | 453 (10.1) | 2422 (9.0) |
| Unclear | 990 (4.4) | 70 (1.6) | 1060 (3.9) |
| Economic status | |||
| Poor, below local poverty line | 5515 (24.6) | 1559 (34.6) | 7074 (26.3) |
| Non-poor | 16 879 (75.4) | 2915 (64.7) | 19 794 (73.6) |
| Unclear | 0 (0.0) | 31 (0.7) | 31 (0.1) |
| Familial history of psychiatry | |||
| No | 20 331 (90.8) | 4158 (92.3) | 24 489 (91.0) |
| Yes | 1249 (5.6) | 254 (5.6) | 1503 (5.6) |
| Unclear | 814 (3.6) | 93 (2.1) | 907 (3.4) |
| Mode of onset | |||
| Acute | 9046 (40.4) | 2578 (57.2) | 11 624 (43.2) |
| Subacute | 6208 (27.7) | 892 (19.8) | 7100 (26.4) |
| Chronic | 7138 (31.9) | 1003 (22.3) | 8141 (30.3) |
| Unclear | 2 (0.0) | 32 (0.7) | 34 (0.1) |
| Guardianship | |||
| No | 2264 (10.1) | 496 (11.0) | 2760 (10.3) |
| Yes | 20 130 (89.9) | 4009 (89.0) | 24 139 (89.7) |