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Table 4 Negative binomial regression results on the use of outpatient services in the past 2 weeks

From: The role of parental health care utilization in children’s unnecessary utilization in China: evidence from Shaanxi province

  Number of children’s outpatient visit in the last 2 weeks (marginal effect reported)
  (1) Full sample (2) Age 0–5 (3) Age 6–11 (4) Age 12–18
  dy/dx S.E. 95% CI dy/dx S.E. 95% CI dy/dx S.E. 95% CI dy/dx S.E. 95% CI
Parents had outpatient visit 0.0393a 0.0106 0.0186 0.0600 0.0980a 0.0306 0.0381 0.1579 0.0170 0.0146 −0.0117 0.0457 0.0179c 0.0107 −0.0031 0.0390
Per capita household expense
 Poor −0.0010 0.0036 −0.0080 0.0061 0.0057 0.0099 −0.0138 0.0251 0.0007 0.0061 −0.0113 0.0127 −0.0051c 0.0031 −0.0111 0.0008
 Average −0.0023 0.0036 −0.0094 0.0048 −0.0048 0.0091 −0.0228 0.0131 0.0003 0.0065 −0.0124 0.0129 −0.0031 0.0038 −0.0106 0.0044
 Rich −0.0016 0.0036 −0.0087 0.0055 0.0040 0.0107 −0.0170 0.0251 −0.0079 0.0053 −0.0183 0.0025 −0.0024 0.0037 −0.0096 0.0048
 Richest −0.0002 0.0039 −0.0078 0.0075 0.0111 0.0118 −0.0119 0.0342 −0.0086 0.0062 −0.0207 0.0034 0.0008 0.0044 −0.0078 0.0094
Children had insurance 0.0005 0.0040 −0.0074 0.0084 0.0000 0.0098 −0.0191 0.0192 −0.0090 0.0116 −0.0318 0.0137 0.0174a 0.0025 0.0125 0.0224
Children’s days of illness 0.0133a 0.0008 0.0118 0.0147 0.0241a 0.0013 0.0216 0.0267 0.0122a 0.0013 0.0096 0.0148 0.0045a 0.0005 0.0035 0.0055
Children’s height (ln) 0.0034 0.0074 −0.0110 0.0179 0.0128 0.0163 −0.0191 0.0447 −0.0156 0.0175 −0.0498 0.0187 0.0047 0.0142 −0.0231 0.0326
Children’s weight (ln) −0.0010 0.0039 −0.0086 0.0066 −0.0053 0.0083 −0.0215 0.0109 0.0108 0.0087 −0.0062 0.0279 −0.0051 0.0072 −0.0191 0.0090
Prenatal days of illness −0.0013b 0.0005 −0.0023 −0.0002 −0.0033b 0.0015 −0.0062 −0.0004 −0.0001 0.0008 −0.0016 0.0014 −0.0009c 0.0005 −0.0018 0.0000
Parental age 0.0001 0.0001 −0.0001 0.0002 0.0003 0.0002 −0.0001 0.0006 −0.0001 0.0002 −0.0004 0.0003 0.0001 0.0002 −0.0002 0.0004
Children’s age
 3-5 −0.0051c 0.0030 −0.0110 0.0008 −0.0126c 0.0073 −0.0269 0.0017         
 6-8 −0.0074c 0.0040 −0.0152 0.0005             
 9-11 −0.0161a 0.0039 −0.0237 −0.0085      −0.0100b 0.0048 −0.0194 −0.0007     
 12-14 −0.0154a 0.0043 −0.0238 −0.0069             
 15-18 −0.0239a 0.0048 −0.0333 −0.0145          −0.0078b 0.0036 −0.0148 −0.0007
Gender was male −0.0031 0.0023 −0.0075 0.0014 −0.0095c 0.0056 −0.0206 0.0015 0.0025 0.0041 −0.0055 0.0106 −0.0036 0.0026 −0.0086 0.0015
Ethnicity was Han −0.0004 0.0099 −0.0198 0.0191 0.0022 0.0275 −0.0517 0.0560 0.0023 0.0170 −0.0310 0.0357 0.0005 0.0105 −0.0200 0.0210
Urban 0.0095a 0.0028 0.0039 0.0150 0.0113 c 0.0067 −0.0018 0.0244 0.0190a 0.0063 0.0067 0.0314 −0.0017 0.0029 −0.0074 0.0041
Region
 Guanzhong −0.0006 0.0026 −0.0056 0.0044 −0.0011 0.0061 −0.0131 0.0109 −0.0015 0.0045 −0.0104 0.0073 0.0023 0.0030 −0.0036 0.0083
 Shanbei −0.0033 0.0030 −0.0092 0.0026 −0.0117 0.0079 −0.0272 0.0038 0.0012 0.0057 −0.0100 0.0124 −0.0037 0.0039 −0.0113 0.0039
Family size 0.0022b 0.0011 0.0001 0.0042 0.0047c 0.0026 −0.0004 0.0099 0.0012 0.0017 −0.0022 0.0046 0.0014 0.0012 −0.0010 0.0038
No. of obs. 10,596 3,732 3,077 3,787
  1. Note: aStatistically significant at the 1% level, bstatistically significant at the 5% level, cstatistically significant at the 10% level; S.E. robust standard errors; marginal effects instead of the original coefficients are reported to show the marginal change of the dependent variable given a one unit change in an explanatory variable. The reference groups were: “the poorest” for “per capita household expense”; “no” for “children had insurance”; “0-2” for “children’s age”; “female” for “gender was male”; “others” for “ethnicity was Han”; “rural” for “urban”; “Shannan” for “region”