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. 2021 Jun 18;18(12):6557. doi: 10.3390/ijerph18126557

Table 3.

Characteristics of rural and urban respondents, CHARLS 2011 and CHARLS 2015.

CHARLS 2011 (n = 6048) CHARLS 2015 (n = 7396)
Rural
(n = 4391)
Urban
(n = 1657)
p Rural
(n = 5385)
Urban
(n = 2011)
p
% % % %
Age (mean ± SD a, years) 68.3 ± 7.0 69.0 ± 7.0 0.001 * 68.6 ± 7.2 69.2 ± 7.2 0.001 *
Age group (years) 0.009 ** 0.001 **
 60–64 38.3 34.3 35.8 32.7
 65–69 24.6 23.2 26.9 26.3
 70–74 17.3 20.0 17.7 17.3
 75–79 11.4 13.7 10.5 14.2
 80–84 5.7 6.3 5.9 6.3
 85–89 2.0 2.1 2.5 2.5
90+ 0.6 0.5 0.8 0.7
Sex 0.111 *** 0.006 ***
 Male 49.6 51.9 48.3 51.9
 Female 50.4 48.1 51.7 48.1
Marital status <0.001 *** <0.001 ***
 Married 76.7 81.1 77.3 81.6
 Unmarried 23.3 18.9 22.7 18.4
Living arrangement <0.001 *** 0.234 ***
 Not living alone 90.5 86.3 91.1 91.9
 Living alone 9.5 13.7 8.9 8.1
Living near children <0.001 ** 0.818 ***
 Living near children 90.9 91.9 87.4 87.9
 Not living near children 6.9 4.7 10.5 10.2
 No child 2.2 3.4 2.0 1.8
Educational level <0.001 ** <0.001 **
 Below primary school 67.2 26.6 64.9 22.0
 Primary school 23.5 23.9 22.8 27.5
 Middle school 7.8 24.6 9.8 26.0
 High school 1.5 16.5 2.4 17.3
 College and above 0.1 8.3 0.1 7.2
Income (mean, CNY b) 4126 18,846 <0.001 * 5294 20,979 <0.001 *
Income group <0.001 ** <0.001 **
 First group (low) 21.0 4.0 10.4 5.3
 Second group 22.8 2.2 11.8 1.3
 Third group 20.2 6.1 11.9 1.9
 Fourth group 13.9 18.9 10.0 7.0
 Fifth group (high) 6.2 50.2 4.1 24.4
 Missing 15.9 18.7 51.8 60.1

a SD: Standard Deviation; b CNY: Chinese Yuan; * Independent t test; ** Chi-square test. The level of significance was specified at 0.05. A Bonferroni adjusted significance level was used in case of multiple tests; *** Chi-square test.