Table 5 |
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|
Determinants of willingness to pay |
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|
Dependent variables |
WTP for baseline BHI (ln) |
WTP for BHI without ceiling (ln) |
WTP for BHI without deductible (ln) |
WTP for BHI without coinsurance (ln) |
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|
|
|
|
|
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|
Model |
1.1 |
1.2 |
2.1 |
2.2 |
3.1 |
3.2 |
4.1 |
4.2 |
|
Regression |
Interval regression |
OLS |
Interval regression |
OLS |
Interval regression |
OLS |
Interval regression |
OLS |
|
|
|
|
|
|||||
|
AGE |
-0.013 |
-0.014 |
-0.014 |
-0.016 |
-0.014 |
-0.015 |
-0.010 |
-0.012 |
|
(0.0039) |
(0.0043) |
(0.0044) |
(0.0048) |
(0.0037) |
(0.0041) |
(0.0049) |
(0.0052) |
|
|
0.0010 |
0.0018 |
0.0013 |
0.0017 |
0.0002 |
0.0003 |
0.0356 |
0.0294 |
|
|
MALE |
-0.203 |
-0.221 |
-0.154 |
-0.166 |
-0.198 |
-0.212 |
-0.212 |
-0.226 |
|
(0.0558) |
(0.0635) |
(0.0756) |
(0.0843) |
(0.0643) |
(0.0721) |
(0.0670) |
(0.0745) |
|
|
0.0003 |
0.0010 |
0.0416 |
0.0538 |
0.0020 |
0.0046 |
0.0016 |
0.0036 |
|
|
EDU2 |
0.140 |
0.148 |
0.156 |
0.154 |
0.219 |
0.227 |
0.151 |
0.150 |
|
(0.0978) |
(0.1097) |
(0.1260) |
(0.1409) |
(0.1126) |
(0.1260) |
(0.1076) |
(0.1187) |
|
|
0.1527 |
0.1825 |
0.2157 |
0.2786 |
0.0522 |
0.0764 |
0.1614 |
0.2099 |
|
|
EDU3 |
0.084 |
0.083 |
0.133 |
0.122 |
0.207 |
0.206 |
0.165 |
0.163 |
|
(0.1182) |
(0.1311) |
(0.1424) |
(0.1579) |
(0.1424) |
(0.1575) |
(0.1264) |
(0.1390) |
|
|
0.4761 |
0.5275 |
0.3515 |
0.4443 |
0.1461 |
0.1951 |
0.1913 |
0.2488 |
|
|
EDU4 |
0.222 |
0.230 |
0.333 |
0.334 |
0.347 |
0.356 |
0.305 |
0.302 |
|
(0.1527) |
(0.1682) |
(0.1645) |
(0.1827) |
(0.1561) |
(0.1734) |
(0.1470) |
(0.1622) |
|
|
0.1458 |
0.1768 |
0.0429 |
0.0724 |
0.0262 |
0.0447 |
0.0379 |
0.0676 |
|
|
INCOME (ln) |
0.439 |
0.468 |
0.469 |
0.499 |
0.458 |
0.489 |
0.434 |
0.461 |
|
(0.0504) |
(0.0542) |
(0.0588) |
(0.0642) |
(0.0574) |
(0.0622) |
(0.0566) |
(0.0613) |
|
|
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
|
|
MIGRANT |
-0.345 |
-0.373 |
-0.214 |
-0.224 |
-0.174 |
-0.187 |
-0.287 |
-0.303 |
|
(0.0888) |
(0.1025) |
(0.0979) |
(0.1108) |
(0.0915) |
(0.1050) |
(0.1033) |
(0.1157) |
|
|
0.0001 |
0.0006 |
0.0285 |
0.0475 |
0.0566 |
0.0800 |
0.0054 |
0.0113 |
|
|
EMPLOY |
0.224 |
0.232 |
0.258 |
0.273 |
0.191 |
0.198 |
0.290 |
0.300 |
|
(0.0835) |
(0.0910) |
(0.0930) |
(0.1022) |
(0.0826) |
(0.0905) |
(0.0872) |
(0.0962) |
|
|
0.0073 |
0.0133 |
0.0055 |
0.0098 |
0.0209 |
0.0324 |
0.0009 |
0.0028 |
|
|
HEX (ln) |
0.076 |
0.083 |
0.139 |
0.148 |
0.090 |
0.098 |
0.087 |
0.093 |
|
(0.0198) |
(0.0210) |
(0.0220) |
(0.0234) |
(0.0203) |
(0.0216) |
(0.0236) |
(0.0248) |
|
|
0.0001 |
0.0002 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
0.0002 |
0.0004 |
|
|
Constant |
0.008 |
-0.266 |
0.204 |
-0.026 |
0.265 |
0.019 |
0.182 |
-0.035 |
|
(0.3315) |
(0.3617) |
(0.3853) |
(0.4270) |
(0.3893) |
(0.4239) |
(0.4001) |
(0.4358) |
|
|
0.9815 |
0.4642 |
0.5957 |
0.9508 |
0.4965 |
0.9643 |
0.6495 |
0.9363 |
|
|
|
|
|
|
|||||
|
N |
609 |
609 |
609 |
609 |
609 |
609 |
609 |
609 |
|
F |
22.7 |
23.1 |
21.7 |
19.11 |
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|
Log likelihood |
-1308 |
-1486 |
-1433 |
-1475 |
||||
|
R2 |
0.247 |
0.259 |
0.242 |
0.213 |
||||
|
McKelvey and Zavoina's R2 |
0.266 |
0.277 |
0.257 |
0.224 |
||||
|
p value |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
< 0.0001 |
|
|
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|
The numbers in the cells are regression coefficient, heteroscedasticity-robust standard error adjusted for clustering of the data in 60 primary sampling units (in brackets) and p value. WTP = willingness to pay, BHI = basic health insurance, OLS = ordinary least squares regression, ln = natural logarithm |
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|
Bärnighausen et al. BMC Health Services Research 2007 7:114 doi:10.1186/1472-6963-7-114 |
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