Table 1 Demographic information, China, 2019
Characteristic | Total | Nanjing | Xi’an | P |
|---|---|---|---|---|
n(%) | n(%) | n(%) | ||
Gender | ||||
  Male | 457(52.59) | 241(55.66) | 216(49.50) | 0.095 |
  Female | 406(46.72) | 191(44.11) | 215(49.30) |  |
  Unfilled | 6(0.69) | 1(0.23) | 5(1.10) |  |
Age | ||||
  < 18 | 26(2.99) | 21(4.85) | 5(1.10) | 0.017* |
  18–30 | 515(59.26) | 260(60.05) | 255(58.50) |  |
  31–40 | 141(16.23) | 70(16.17) | 71(16.30) |  |
  41–50 | 84(9.67) | 38(8.78) | 46(10.60) |  |
  51–60 | 49(5.64) | 18(4.15) | 31(7.10) |  |
  61–70 | 36(4.14) | 21(4.85) | 15(3.40) |  |
  > 70 | 12(1.38) | 5(1.15) | 7(1.60) |  |
  Unfilled | 6(0.69) | 0(0.00) | 6(1.40) |  |
Ethnicity | ||||
  Han | 850(97.81) | 423(97.69) | 427(97.90) | 0.052 |
  Other | 13(1.50) | 10(2.31) | 3(0.70) |  |
  Unfilled | 6(0.69) | 0(0.00) | 6(1.40) |  |
Education level | ||||
  None/primary | 17(1.96) | 8(1.85) | 9(2.10) | 0.044* |
  Junior school | 70(8.06) | 40(9.24) | 30(6.90) |  |
  High school | 188(21.63) | 92(21.25) | 96(22.00) |  |
  Junior college | 188(21.63) | 76(17.55) | 112(25.70) |  |
  Undergraduate college | 352(40.51) | 192(44.34) | 160(36.70) |  |
  Master degree/above | 49(5.64) | 25(5.77) | 24(5.50) |  |
  Unfilled | 5(0.58) | 0(0.00) | 5(1.10) |  |
Annual income level | ||||
  Under ¥30,000 | 382(43.96) | 199(45.96) | 183(42.00) | 0.014* |
  ¥30,000-¥60,000 | 194(22.32) | 84(19.40) | 110(25.20) |  |
  ¥60,000-¥90,000 | 145(16.69) | 65(15.01) | 80(18.30) |  |
  ¥90,000-¥120,000 | 72(8.29) | 37(8.55) | 35(8.00) |  |
  ¥120,000-¥150,000 | 41(4.72) | 22(5.08) | 19(4.40) |  |
  Above ¥150,000 | 35(4.03) | 26(6.00) | 9(2.10) |  |