From: Use of and factors associated with self-treatment in China
Variables | 1993 | 1998 | 2003 | 2008 | χ 2 |
---|---|---|---|---|---|
Illness symptoms: | Â | Â | Â | Â | Â |
 Pain | NA | 28.2 | 35.1 | 29.1 | 34.0** |
 Fever | NA | 21.4 | 25.8 | 20.8 | 831.9** |
 Palpitation | NA | 28.0 | 38.4 | 26.2 | 45.3** |
 Other | NA | 33.2 | 37.5 | 27.1 | 298.6** |
 χ 2 |  | 328.3** | 141.0** | 83.6** |  |
Illness severity: | Â | Â | Â | Â | Â |
 Not serious | NA | 34.9 | 42.5 | 32.8 | 148.3** |
 General | NA | 29.3 | 38.0 | 27.5 | 114.3** |
 Serious | NA | 19.5 | 24.8 | 20.1 | 10.7** |
 χ 2 |  | 459.2** | 497.8** | 285.5** |  |
Duration of illness (within 2 weeks): |  |  |  |  |  |
 1-2 days | 24.9 | 34.6 | 37.9 | 31.4 | 48.9** |
 3-4 days | 19.0 | 28.2 | 35.3 | 27.1 | 28.1** |
 ≥5 days | 18.1 | 25.7 | 34.7 | 24.9 | 12.7** |
 χ 2 | 148.9** | 190.7**(0.000) | 21.2** | 108.6** |  |
Course of illness: | Â | Â | Â | Â | Â |
 Acute illness occurred within 2 weeks | NA | 27.4 | 33.3 | 26.6 | 773.6** |
 Acute illness occurred 2 weeks prior | NA | 19.6 | 23.5 | 17.3 | 5.2 |
 chronic illness | NA | 31.5 | 39.6 | 28.4 | 804.8** |
 χ 2 |  | 162.9** | 257.3** | 133.7** |  |