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Table 1 Descriptive information between uninsured and insured groups in 2006 and 2009

From: Income-related inequality in health insurance coverage: analysis of China Health and Nutrition Survey of 2006 and 2009

  Year 2006 P values in 2006 Year 2009 P values in 2009
  (N = 9476)   (N = 9863)  
  Uninsured Insured   Uninsured Insured  
Number of observations 4764 4712   899 8964  
Residence, n (%)    0.006    <0.0001
 Urban 1549 (32.51) 1657 (35.17)   442 (49.17) 2878 (32.11)  
 Rural 3215 (67.49) 3055 (64.83)   457 (50.83) 6086 (67.89)  
Gender, n (%)    0.001    0.191
 Male 2188 (45.93) 2323 (49.30)   413 (45.94) 4323 (48.23)  
 Female 2576 (54.07) 2389 (50.70)   486 (54.06) 4641 (51.77)  
Marital status, n (%)    <0.0001    <0.0001
 Unmarried 916 (19.23) 643 (13.65)   248 (27.59) 1388 (15.48)  
 Married 3848 (80.77) 4069 (86.35)   651 (72.41) 7576 (84.52)  
Education attainment, n (%)    <0.0001    <0.0001
 Low education 3769 (79.11) 3183 (67.55)   627 (69.74) 6778 (75.61)  
 Median education 864 (18.14) 1126 (23.90)   218 (24.25) 1697 (18.93)  
 High education 131 (2.75) 403 (8.55)   54 (6.01) 489 (5.46)  
Retirement, n (%)    <0.0001    <0.0001
 Not retired 4470 (93.83) 3849 (81.69)   822 (91.43) 7786 (86.86)  
 Retired 294 (6.17) 863 (18.31)   77 (8.57) 1178 (13.14)  
Occupations, n (%)    <0.0001    <0.0001
 Officials 119 (2.50) 370 (7.85)   31 (3.45) 473 (5.28)  
 Professionals 94 (1.97) 347 (7.36)   24 (2.67) 456 (5.09)  
 Technicians 337 (7.07) 537 (11.40)   80 (8.90) 859 (9.58)  
 Farmers 1434 (30.10) 1218 (25.85)   88 (9.79) 2590 (28.89)  
 Service sector workers 510 (10.71) 328 (6.96)   151 (16.80) 777 (8.67)  
 Others 169 (3.55) 130 (2.76)   43 (4.78) 262 (2.92)  
 Not working 2101 (44.10) 1782 (37.82)   482 (53.62) 3547 (39.57)  
Age in years, mean (SD) 48.5 (15.9) 50.3 (14.6) <0.0001 47.7 (17.9) 50.4 (15.3) <0.0001
Household size, mean (SD) 3.9 (1.69) 3.5 (1.48) <0.0001 3.8 (1.69) 3.7 (1.65) 0.053
Household income per capita in 10000 RMB, mean (SD) 0.62 (0.91) 1.00 (1.24) <0.0001 0.89 (1.01) 1.18 (1.54) <0.0001