Table 3

The proportion of respondents using self-treatment in different economic categories, by year (%)
Variables 1993 1998 2003 2008 χ2
Insurance:
 Without any health insurance 16.0 25.3 33.9 35.9 7200.0**
 Other medical insurance 12.9 24.6 32.0 32.4 251.7**
 Rural cooperative medical scheme 15.0 18.5 29.0 25.4 13000.0**
 Urban basic medical insurance 33.4 44.3 47.7 27.6 301.6**
 Free medical insurance 30.5 41.9 49.5 22.8 1300.0**
χ2 1000.0** 907.9** 367.2** 191.7**
Shortest distances from residence to medical institutions:
 ≤1 km 21.0 29.7 38.1 27.3 275.7**
 >1 km 17.8 25.1 31.0 26.6
χ2 38.2** 66.3** 135.2** 2.2
Annual per capita incomea:
 Low 17.5 21.9 30.6 23.8 2900.0**
 Middle 19.9 30.3 37.9 27.1 241.2**
 High 4.5 39.3 44.2 27.7 3300.0**
χ2 15.3** 655.1** 350.0** 22.4**
TV:
 No NA 21.3 29.0 27.2 340.9**
 Yes NA 29.7 36.9 27.1
χ2 148.7** 90.7** 0.01
Sanitary water:
 No 14.3 20.6 29.5 24.6 27.5**
 Yes 27.7 36.7 41.8 29.0
χ2 833.9** 1000.0** 460.9** 80.0**
Family poverty:
 No NA 28.2 36.0 26.9 191.4**
 Yes NA 31.3 31.2 28.6
χ2 10.6** 15.2** 4.5*

a Annual per capita income discounted by CPI inflation in 1993, 1998 and 2003, and divided into low, middle, and high tertiles. NA: no data available.

*Significant at 5%. **Significant at 1%.

Yuefeng et al.

Yuefeng et al. BMC Public Health 2012 12:995   doi:10.1186/1471-2458-12-995

Open Data