Socio-demographic information of the participating physicians
| Socio-demographic information | N (%) | Socio-demographic information | N (%) |
| Gender | Employment status | ||
| Female | 1352 (37.9) | Permanent | 2731 (76.6) |
| Male | 2211 (62.1) | Temporary | 832 (23.4) |
| Age | Having administrative duties | ||
| 19~34 | 1561 (43.8) | Yes | 872 (24.5) |
| 35~44 | 1236 (34.7) | No | 2691 (75.5) |
| 45~ | 766 (21.5) | Department | |
| Marital status | Internal medicine | 1127 (31.6) | |
| Unmarried | 532 (14.9) | Surgery | 619 (17.4) |
| Married | 2944 (82.6) | Gynaecology & Obstetrics Paediatrics | 504 (14.1) |
| Other | 87 (2.4) | Traditional Chinese Medicine | 196 (5.5) |
| Education background | Prevention and Care | 338 (9.5) | |
| Doctor/Master | 495 (13.9) | Other | 779 (21.9) |
| Bachelor | 2051 (57.6) | Hours worked per week | |
| Junior college | 750 (21.0) | 0~40 | 1123 (31.5) |
| Lower than junior college* | 267 (7.5) | 41~56 | 1507 (42.3) |
| Professional status | 57~ | 933 (26.2) | |
| Chief physician Associate Chief physician | 724 (20.3) | Night shift frequency (per month) | |
| Attending physician | 1092 (30.6) | 0~3 | 1462 (41.0) |
| Resident physician | 1407 (39.5) | 4~7 | 1227 (34.4) |
| No title | 340 (9.5) | 8~ | 874 (24.5) |
| Occupation | Annual income (RMB) | ||
| Clinical medical | 3218 (90.3) | 10 000~19 999 | 166 (4.7) |
| Other | 345 (9.6) | 20 000~39 999 | 866 (24.3) |
| Years of service | 40 000~59 999 | 794 (22.3) | |
| 0~4 | 537 (15.1) | 60 000~79 999 | 601 (16.9) |
| 5~9 | 864 (24.2) | 80 000~ | 1136 (31.9) |
| 10~19 | 1123 (31.5) | Urban/rural area | |
| 20~ | 1039 (29.2) | Urban | 2152 (60.4) |
| Type of institution | Rural | 1411 (39.6) | |
| Hospital | 2222 (62.4) | Pearl River Delta or not | |
| Community health service centre | 731 (20.5) | Yes | 2025 (56.8) |
| Health clinics | 610 (17.1) | No | 1538 (43.2) |
*Lower than junior college includes technician training school, senior high school and junior high school, etc.