Table 5 Results of subgroup analysis based on screening experience
Attribute levels (reference level) | No screening experience | Having screening experience | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
coefficient (s.e) | SD(s.e) | WTP (CNY) | 95% CI | coefficient (s.e) | SD(s.e) | WTP (CNY) | 95% CI | |||
Cost | −0.001**(0.000) | 0.000**(0.000) | – | – | – | −0.0008381** (0.0002691) | 0.000 (0.000) |  |  |  |
Waiting time (5 h) | ||||||||||
3 h | 0.381**(0.134) | 0.745**(0.183) | 372.790 | 47.379 | 698.201 | 0.369**(0.142) | 0.335 (0.256) | 440.650 | −4.460 | 885.761 |
1 h | 1.207** (0.162) | 0.712 (0.169) | 1180.131 | 555.074 | 1805.188 | 0.369**(0.142) | 0.335 (0.256) | 440.650 | −4.460 | 885.761 |
Pain (Severe) | ||||||||||
Mild | 0.514**(0.123) | 0.201**(0.187) | 502.265 | 189.266 | 815.264 | 0.558* (0.228) | 1.333**(0.233) | 665.871 | −50.622 | 1382.364 |
None | 1.376** (0.132) | 1.177**(0.193) | 1345.418 | 718.431 | 1972.403 | 0.432**(0.148) | 0.145 (0.372) | 514.952 | 30.124 | 999.780 |
Frequency (Once every three years) | ||||||||||
Once every two years | 0.596**(0.121) | 0.116 (0.189) | 582.855 | 297.278 | 868.432 | 0.455**(0.165) | 0.373 (0.261) | 542.954 | 4.489 | 1081.419 |
Once a year | 0.926**(0.115) | 0.066 (0.318) | 905.421 | 473.413 | 1337.429 | 0.998**(0.229) | 1.271**(0.291) | 1191.155 | 317.243 | 2065.067 |
Sensitivity (35%) | ||||||||||
65% | 0.335*(0.135) | 0.719**(0.160) | 327.400 | 93.240 | 561.561 | 0.646**(0.157) | 0.560*(0.249) | 770.735 | 134.700 | 1406.769 |
95% | 0.887**(0.158) | 1.087**(0.168) | 867.541 | 582.851 | 1302.231 | 1.729**(0.247) | 1.673**(0.272) | 2063.477 | 587.478 | 3539.477 |
log likelihood | − 1432.2078 | −926.18352 | ||||||||
Number of obs | 5238 | 3996 | ||||||||
N | 194 | 148 | ||||||||