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Table 1 Descriptive statistics

From: Medical insurance and health equity in health service utilization among the middle-aged and older adults in China: a quantile regression approach

  Total NCMS URBMI UEBMI Statistica P
n(%) n(%) n(%) n(%)
Demographic variables
 Gender      127 < 0.001
  Male 6247(47.7) 5060(46.5) 958(60.0) 229(37.9)   
  Female 6840(52.3) 5826(53.5) 638(40.0) 376(62.1)   
 Age      75 < 0.001
  Mean ± SD 60.8 ± 9.3 60.5 ± 9.3 62.7 ± 9.5 61.4 ± 9.5   
 Education      501 < 0.001
  Illiteracy 3342(25.5) 3191(29.3) 73(4.6) 78(12.9)   
  Literacy 9745(74.5) 7695(70.7) 1523(95.4) 527(87.1)   
 Marital      17 < 0.001
  Married 10,791(82.5) 8923(82.0) 1374(86.1) 494(81.7)   
  Others 2296(17.5) 1963(18.0) 222(13.9) 111(18.3)   
 Log(Income)      1515 < 0.001
  Mean ± SD 4.5 ± 4.4 4 ± 4.1 7.8 ± 4.5 5.2 ± 4.7   
DVs and other IVs
 Self-reported health      118 < 0.001
  Poor 2927(22.4) 2611(24.0) 199(12.5) 117(19.3)   
  Fair 7191(54.9) 5927(54.4) 919(57.6) 345(57.0)   
  Good 1476(11.3) 1145(10.5) 256(16.0) 75(12.4)   
  Very good 1341(10.2) 1076(9.9) 203(12.7) 62(10.3)   
  Excellent 152(1.2) 127(1.2) 19(1.2) 6(1.0)   
 ADLs      46 < 0.001
  Mean ± SD 0.4 ± 1 0.4 ± 1 0.2 ± 0.7 0.4 ± 1   
 IADLs      179 < 0.001
  Mean ± SD 0.4 ± 0.9 0.5 ± 1 0.2 ± 0.7 0.3 ± 0.8   
 Demand      17 < 0.001
  Yes 811(6.2) 706(6.5) 62(3.9) 43(7.1)   
  No 12,276(93.8) 10,180(93.5) 1534(96.1) 562(92.9)   
 Hospitals      344 < 0.001
  One or more 8181(62.5) 6421(59.0) 1274(79.8) 486(80.3)   
  No 4906(37.5) 4465(41.0) 322(20.2) 119(19.7)   
 Health centers      1515 < 0.001
  One or more 2396(18.3) 1350(12.4) 777(48.7) 269(44.5)   
  No 10,691(81.7) 9536(87.6) 819(51.3) 336(55.5)   
 Clinics      3291 < 0.001
  One or more 10,669(81.5) 9821(90.2) 561(35.2) 287(47.4)   
  No 2418(18.5) 1065(9.8) 1035(64.8) 318(52.6)   
 Provincesb       
 Chronicb       
 Log (Medical Expenditure)      18 < 0.001
  Mean ± SD 2 ± 3.4 2 ± 3.3 2.4 ± 3.8 2.2 ± 3.6   
  1. Legends: a: Kruskal-Wallis is used to assess differences between group
  2. b: See Table 1S in Additional file 1