Table 4.
Longitudinal predictors of parent–reported HPV vaccine initiation (continuous variables in unadjusted analyses).
| Weighted mean (weighted SD) | RR (95% CI) | ||
|---|---|---|---|
| Vaccinated by follow-up (n=149) | Not vaccinated by follow-up (n=418) | ||
| Vaccine beliefs (CHIAS) | |||
| Perceived effectiveness of HPV vaccine 1 | 2.45 (.55) | 2.35 (.59) | 1.23 (.91–1.67) |
| Perceived barriers to getting daughter HPV vaccine 2 | 1.50 (.47) | 1.73 (.59) | .56 (.38-.83)** |
| Perceived harms of HPV vaccine 3 | 1.95 (.40) | 2.23 (.58) | .47 (.31-.70)** |
| Perceived uncertainty about HPV vaccine 3 | 2.57 (.84) | 3.01 (.74) | .62 (.46-.84)** |
| Beliefs about daughter | |||
| Anticipated regret (if do not get daughter HPV vaccine and she gets HPV) 4 | 3.92 (.36) | 3.54 (.87) | 2.64 (1.56–4.46)** |
| Anticipated regret (if daughter became more sexually active because she got HPV vaccine) 4 | 2.92 (1.26) | 2.70 (1.19) | 1.12 (.93–1.34) |
| Perceived likelihood of daughter getting cervical cancer 5 | 2.50 (.73) | 2.44 (.68) | 1.09 (.79–1.51) |
| Perceived severity of cervical cancer if daughter got it1 | 3.65 (.64) | 3.61 (.67) | 1.07 (.65–1.77) |
Note. Predictors assessed in baseline interview, except for political affiliation and being a born-again Christian. Outcome assessed at follow-up. Response scales ranged from 1 to 4, with higher values indicating stronger endorsement of the belief; see footnotes for response scale labels. CHIAS = Carolina HPV Immunization Attitudes and Beliefs Scale. CHIAS assessed vaccine beliefs using 2 items (effectiveness), 5 items (barriers), 6 items (harms) and 3 items (uncertainty); the remainder were single-item measures. Analyses included parents who reported at baseline their daughters had not received any doses of HPV vaccine. RR = risk ratio. CI = confidence interval. RRs report increase in vaccination associated with each unit increase in predictor.
p<.001
Response scale: slightly (coded as 1), moderately (2), very (3), and extremely (4).
Response scale: not hard at all (coded as 1), somewhat hard (2.5), and very hard (4); except for one item which used: strongly disagree (1), somewhat disagree (2), somewhat agree (3), and strongly agree (4).
Response scale: strongly disagree (coded as 1), somewhat disagree (2), somewhat agree (3), and strongly agree (4).
Response scale: not at all (coded as 1), a little (2), a moderate amount (3), and a lot (4).
Response scale: no chance (coded as 1), low (2), moderate (3), and a high chance (4).