Table 4. Factors associated with willingness to pay for hepatitis B vaccination, Selangor, Malaysia, 2016 (N = 728).
| Variables | Coefficient (β) | Odds ratio | 95% confidence interval | |
|---|---|---|---|---|
| Lower | Upper | |||
| Constant | -1.142 | 0.319 | ||
| Bid | -0.006 | 0.994** | 0.993 | 0.996 |
| Education (Degree vs. no degree) | 0.996 | 2.708** | 1.772 | 4.137 |
| Monthly income (in RM) | 0.000 | 1.000** | 1.000 | 1.000 |
| Ethnicity (Malay vs. others) | 0.542 | 1.720* | 1.047 | 2.825 |
| Ethnicity (Chinese vs. others) | 1.088 | 2.968** | 1.710 | 5.153 |
| Perception of susceptibility | 0.071 | 1.073** | 1.032 | 1.116 |
| Perception of severity | 0.023 | 1.023 | 0.985 | 1.063 |
| Perception of benefit | -0.019 | 0.981 | 0.947 | 1.017 |
| Perception of barrier | 0.005 | 1.005 | 0.962 | 1.050 |
| Cues to action | 0.024 | 1.025 | 0.975 | 1.077 |
| Summary statistics | ||||
| Adopter correctly predicted | 69% | |||
| McFadden-R2 | 0.122 | |||
| Hosmer-Lemeshow Chi-square | 5.921 | |||
| Number of observations | 728 | |||
| Estimated mean WTP | RM303 (US$73) (95% CI:RM291-RM315) | |||
| Estimated median WTP | RM303 (US$73) (95% CI:RM279-RM323) | |||
| Standard deviation | 101.25 | |||
| Standard error mean | 6.13 | |||
| Number of observations | 273 | |||
* P<0.05
** P<0.001