Table 1. Demographics of the respondents across sampling sites/cities.
| Cities | Universities/College | Gender | Age (Years) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Male | Female | Total | 16–20 | 21–25 | 26–30 | 31–35 | ≥ 36 | ||
| Nanjing | 10 (18.5)* | 178 (40.8) | 258 (59.1) | 436 (21.2) | 232 (23.9) | 150 (15.4) | 38 (46.9) | 9 (60) | 7 (50) |
| Shanghai | 5 (9.2) | 62 (36.9) | 106 (63.1) | 168 (8.2) | 32 (3.3) | 135 (13.9) | 1 (1.2) | 0 | 0 |
| Beijing | 10 (18.5) | 125 (49.1) | 130 (50.9) | 255 (12.5) | 193 (19.9) | 60 (6.1) | 1 (1.2) | 1 (6.7) | 0 |
| Hangzhou | 3 (5.5) | 52 (42.9) | 69 (57.0) | 121 (5.9) | 79 (8.1) | 39 (4.1) | 3 (3.7) | 0 | 0 |
| Xi’An | 5 (9.25) | 94 (50.6) | 88 (48.3) | 182 (8.8) | 40 (4.1) | 133 (13.7) | 9 (11.1) | 0 | 0 |
| Chengdu | 2 (3.7) | 27 (35.5) | 49 (64.5) | 76 (3.7) | 7 (0.7) | 66 (6.8) | 3 (3.7) | 0 | 0 |
| Baoding | 4 (7.4) | 65 (43.9) | 83 (56.1) | 148 (7.2) | 78 (8.1) | 70 (7.2) | 0 | 0 | 0 |
| Nanning | 4 (7.4) | 47 (44.3) | 59 (55.6) | 106 (5.1) | 32 (3.2) | 73(7.5) | 0 | 0 | 1 (7.1) |
| Harbin | 2 (3.7) | 42 (48.8) | 44 (51.2) | 86 (4.2) | 78 (8.1) | 8 (0.8) | 0 | 0 | 0 |
| Lanzhou | 2 (3.7) | 52 (42.9) | 69 (57.1) | 121 (5.9) | 83 (8.5) | 38 (3.9) | 0 | 0 | 0 |
| Changsha | 4 (7.4) | 132 (57.6) | 97 (42.3) | 229 (11.2) | 62 (6.4) | 149 (15.4) | 13 (16.1) | 3 (20) | 2 (14.3) |
| Shenyang | 1 (1.9) | 0 | 30 (100) | 30 (1.5) | 0 | 18 (1.8) | 12 (14.1) | 0 | 0 |
| Wuhan | 2 (3.7) | 42 (46.7) | 48 (53.3) | 90 (4.4) | 54 (5.6) | 29 (2.9) | 1 (1.2) | 2 (13.3) | 4 (28.6) |
| Total | 54 (100) | 918 (44.8) | 1130 (55.2) | 2048 (100) | 970 (47.4) | 968 (47.3) | 81 (3.9) | 15 (0.7) | 14 (0.7) |
*Percentage given