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. 2019 Dec 29;9:39. doi: 10.1186/s13561-019-0255-5

Table 5.

Probit Hackman model showing reasons for not being insured under the NHIS among women in GhanaVariables

Female Female Female
Not covered by NHIS 1 = not covered, 0 = covered (selection) Cannot afford NHIS (1 = yes, 0 = no) Not covered by NHIS 1 = not covered, 0 = covered (selection) Do not trust NHIS (1 = yes, 0 = no) Not covered by NHIS 1 = not covered, 0 = covered (selection) Do not need NHIS (1 = yes, 0 = no)
β (SE) β (SE) β (SE) β (SE) β (SE) β (SE)
Age
 15–19 0.0978 (0.0696) 0.245* (0.110) 0.105 (0.0697) −0.699** (0.239) 0.104 (0.0698) − 0.527** (0.171)
 20–24 0.203*** (0.0578) −0.0519 (0.0911) 0.209*** (0.0578) −0.109 (0.196) 0.209*** (0.0578) −0.182 (0.146)
 25–29 0.0299 (0.0523) 0.0334 (0.0815) 0.0303 (0.0523) 0.100 (0.160) 0.0304 (0.0523) −0.232 (0.119)
 30–34 ref ref ref ref ref ref
 35–39 −0.0496 (0.0537) −0.0225 (0.0814) − 0.0469 (0.0537) 0.134 (0.174) − 0.0470 (0.0537) −0.196 (0.124)
 40–44 −0.00618 (0.0574) − 0.170 (0.0896) −0.00615 (0.0575) − 0.00757 (0.197) −0.00619 (0.0575) 0.106 (0.120)
 45–49 −0.0663 (0.0613) −0.0152 (0.0898) − 0.0682 (0.0613) 0.0585 (0.205) − 0.0684 (0.0613) 0.195 (0.131)
Marital status
 Never in union 0.228*** (0.0535) −0.125 (0.0809) 0.228*** (0.0536) 0.237 (0.160) 0.227*** (0.0537) 0.149 (0.122)
 Married ref ref ref ref ref ref
 Widowed 0.183** (0.0605) 0.0205 (0.0873) 0.191** (0.0608) −0.133 (0.214) 0.191** (0.0608) 0.0765 (0.136)
Wealth index
 Poorest 0.500*** (0.0714) 0.729*** (0.195) 0.503*** (0.0718) −0.387 (0.389) 0.504*** (0.0718) −0.446 (0.267)
 Poorer 0.409*** (0.0623) 0.609*** (0.173) 0.420*** (0.0627) −0.399 (0.310) 0.420*** (0.0628) −0.195 (0.212)
 Middle 0.341*** (0.0541) 0.351** (0.135) 0.345*** (0.0545) −0.0857 (0.232) 0.345*** (0.0545) −0.121 (0.176)
 Richer 0.207*** (0.0491) 0.162 (0.104) 0.211*** (0.0492) −0.203 (0.181) 0.211*** (0.0492) −0.0628 (0.130)
 Richest ref ref ref ref ref ref
Region
 Western −0.383*** (0.0604) 0.0168 (0.1000) − 0.382*** (0.0607) 0.462* (0.209) −0.382*** (0.0606) −0.125 (0.160)
 Central −0.0177 (0.0611) 0.0287 (0.0840) −0.0216 (0.0613) −0.132 (0.156) − 0.0220 (0.0612) 0.124 (0.108)
 Greater Accra ref ref ref ref ref ref
 Volta −0.665*** (0.0677) 0.138 (0.120) − 0.666*** (0.0680) −0.127 (0.307) − 0.666*** (0.0679) −0.266 (0.243)
 Eastern −0.506*** (0.0637) 0.264* (0.103) −0.511*** (0.0639) −0.349 (0.264) − 0.512*** (0.0638) −0.0284 (0.204)
 Ashanti 0.0286 (0.0580) −0.240** (0.0852) 0.0320 (0.0584) − 0.555*** (0.169) 0.0317 (0.0582) −0.252* (0.105)
 Brong Ahafo −0.843*** (0.0647) 0.0649 (0.142) −0.843*** (0.0649) −0.0934 (0.399) − 0.843*** (0.0648) −0.298 (0.294)
 Northern −0.821*** (0.0715) 0.720*** (0.104) −0.812*** (0.0718) −0.474 (0.396) − 0.812*** (0.0718) −0.565* (0.287)
 Upper east −0.822*** (0.0711) −0.269 (0.166) − 0.819*** (0.0712) −0.155 (0.403) − 0.819*** (0.0712) −1.005** (0.343)
 Upper west −1.437*** (0.0804) 1.228*** (0.138) −1.432*** (0.0807) −0.347 (0.652) −1.432*** (0.0806) −0.806 (0.507)
Religion
 Christian 0.151*** (0.0416) 0.102 (0.0710) 0.153*** (0.0416) −0.0722 (0.135) 0.153*** (0.0416) 0.0189 (0.109)
 Islam ref ref ref ref ref ref
 Traditional/spiritualist 0.351*** (0.0957) 0.468** (0.154) 0.358*** (0.0963) −0.0601 (0.443) 0.358*** (0.0963) 0.0801 (0.276)
 No religion 0.341*** (0.0855) 0.0928 (0.129) 0.354*** (0.0864) 0.162 (0.292) 0.353*** (0.0865) 0.170 (0.206)
Residence
 Urban ref ref ref ref ref ref
 Rural −0.0135 (0.0378) −0.114* (0.0571) −0.0137 (0.0378) − 0.293* (0.123) −0.0138 (0.0378) 0.121 (0.0871)
Parity
 No child −0.103 (0.0710) −0.0379 (0.111) − 0.113 (0.0713) −0.00485 (0.218) − 0.113 (0.0713) 0.343* (0.172)
 1–2 −0.211*** (0.0520) −0.0834 (0.0920) − 0.215*** (0.0522) 0.00494 (0.189) −0.215*** (0.0522) 0.0830 (0.151)
 3–4 −0.132** (0.0462) 0.0563 (0.0694) − 0.134** (0.0464) −0.116 (0.168) − 0.134** (0.0464) 0.0586 (0.121)
 5+ ref ref ref ref ref ref
Employment status
 Unemployed −0.0650 (0.0364) 0.152** (0.0530) −0.0637 (0.0363) 0.203 (0.112) −0.0637 (0.0364) − 0.0972 (0.0871)
 Employed ref ref ref ref ref ref
Instrumental variable
 Education
  No education 0.579*** (0.0745) 0.541*** (0.0821) 0.544*** (0.0821)
  Primary 0.485*** (0.0726) 0.451*** (0.0796) 0.454*** (0.0800)
  Secondary 0.275*** (0.0658) 0.246*** (0.0726) 0.249*** (0.0741)
  Higher ref ref ref
Summary Statistics
 Number of observations 9385 9385 9385
 Selected 3214 3214 3214
 Non-selected 6171 6171 6171
 Log likelihood − 7034.182 − 5989.41 − 6610.028
 Wald Chi- square 407.8 102.26 125.46
 Prob > Chi- square < 0.0001 < 0.0001 < 0.0001
 Athrho −1.201377 0.0783509 0.0768847
 Rho −0.8340742 0.078191 0.0767336

Standard errors in parentheses

*p < 0.05

**p < 0.01

***p < 0.001