Table 2 Probit model of having HPV vaccine discussion with HCP, correcting for sample selection a
Variables | Selection equation: | Main equation: | ||
|---|---|---|---|---|
Aware of HPV vaccine | Discussed with HCP on HPV vaccine | |||
Coefficient | (95% C.I.) | Coefficient | (95% C.I.) | |
Age group | ||||
18–34 | Reference | Reference | ||
35–39 | 0.119 | (−0.385, 0.623) | −0.290 | (−0.638, 0.059) |
40–44 | −0.373 | (−0.868, 0.122) | 0.178 | (−0.182, 0.538) |
45 and above | −0.630** | (−1.024,–0.235) | −0.386* | (−0.726,–0.045) |
Race/ethnicity | ||||
White | Reference | Reference | ||
African American | −0.505** | (−0.859,–0.152) | 0.515* | (0.114, 0.917) |
Hispanic | −0.745** | (−1.147,–0.343) | 0.233 | (−0.182, 0.649) |
Other | −1.028** | (−1.550,–0.506) | 0.369 | (−0.148, 0.885) |
Household income | ||||
$75,000 or more | Reference | Reference | ||
$50,000 to <$75,000 | −0.278 | (−0.605, 0.050) | −0.132 | (−0.455, 0.191) |
$20,000 to <$50,000 | −0.360* | (−0.634,–0.086) | −0.158 | (−0.519, 0.202) |
<$20,000 | −0.839** | (−1.125,–0.552) | 0.199 | (−0.135, 0.533) |
Education | ||||
College graduate | Reference | Reference | ||
Some college | 0.197 | (−0.079, 0.474) | −0.063 | (−0.345, 0.220) |
High school graduate | −0.279* | (−0.534,–0.024) | 0.026 | (−0.326, 0.377) |
Less than high school | −0.743** | (−1.139,–0.347) | 0.471 | (−0.006, 0.947) |
Has any insurance | ||||
No | Reference | Reference | ||
Yes | 0.152 | (−0.249, 0.553) | −0.088 | (−0.624, 0.447) |
Has any regular HCP | ||||
No | Reference | Reference | ||
Yes | 0.200 | (−0.083, 0.482) | 0.114 | (−0.260, 0.488) |
Constant | 1.800** | (1.255, 2.346) | −0.563 | (−1.175, 0.049) |
Correlation (ρ) | −0.845 ** | (−0.969, –0.387) | ||