TABLE 3—
Son Characteristics as Longitudinal Predictors of Human Papillomavirus Vaccine Initiation: HPV Immunization in Sons Study, United States, 2010–2011
| Characteristic | No. Initiated HPV Vaccine/Total No. (%) or Mean ±SD | Bivariate OR (95% CI) | Multivariate OR (95% CI) |
| Sons | |||
| Age, ya | |||
| 11–12 | 3/69 (4) | 1.00 (Ref) | … |
| 13–15 | 7/90 (8) | 1.86 (0.46, 7.45) | … |
| 16–17 | 3/65 (5) | 1.07 (0.21, 5.47) | … |
| Race/ethnicitya | |||
| White, non-Hispanic | 4/142 (3) | 0.24* (0.07, 0.79) | 0.24* (0.07, 0.79) |
| Otherb | 9/82 (11) | 1.00 (Ref) | 1.00 (Ref) |
| Saw regular health care provider in past yac | |||
| No | 1/58 (2) | 1.00 (Ref) | … |
| Yes | 12/166 (7) | 4.44 (0.57, 34.94) | … |
| Households | |||
| Urbanicity | |||
| Rural | 2/37 (5) | 1.00 (Ref) | … |
| Urban | 11/187 (6) | 1.09 (0.23, 5.15) | … |
| HPV and HPV vaccine | |||
| Had sister who had received HPV vaccinea | |||
| No or did not have sister | 11/199 (6) | 1.00 (Ref) | … |
| Yes | 2/25 (8) | 1.49 (0.31, 7.13) | … |
| Perceived likelihood of getting HPV-related diseased | 2.08 ±0.70 | 1.38 (0.64, 2.98) | … |
| Comfort talking with parents about new vaccinese | 3.62 ±1.06 | 0.87 (0.52, 1.46) | … |
| Amount talked with parents about HPV vaccinef | 1.10 ±0.33 | 0.83 (0.13, 5.35) | … |
| Willingness to get HPV vaccineg | 3.02 ±1.10 | 1.51 (0.88, 2.61) | … |
| Perceived knowledge about HPV vaccineh | 1.23 ±0.53 | 1.00 (0.34, 2.90) | … |
| Perceived peer acceptance of HPV vaccinei | 3.07 ±0.55 | 0.83 (0.31, 2.25) | … |
| Potential embarrassment of getting HPV vaccinej | 3.05 ±1.03 | 0.61 (0.35, 1.09) | … |
| Anticipated regret if got HPV vaccine and faintedf | 2.86 ±1.08 | 0.99 (0.59, 1.66) | … |
| Anticipated regret if didn’t get HPV vaccine and later got HPV infectionf | 3.24 ±0.93 | 1.55 (0.75, 3.21) | … |
Note. CI = confidence interval; HPV = human papillomavirus; OR = odds ratio. Multivariate model did not include variables with ellipses. The sample size was n = 224 sons.
Data collected during parent survey.
HPV vaccine initiation was 16% (4/25) among non-Hispanic Blacks, 11% (4/36) among Hispanics, and 5% (1/21) among non-Hispanic sons of other races.
Data collected at follow-up.
Four-point response scale ranging from “no chance” to “high chance” (coded 1–4).
Two-item scale; each item had a 5-point response scale ranging from “very uncomfortable” to “very comfortable” (coded 1–5).
Four-point response scale ranging from “not at all” to “a lot” (coded 1–4).
Five-point response scale ranging from “definitely not willing” to “definitely willing” (coded 1–5).
Four-point response scale ranging from “nothing at all” to “a lot” (coded 1–4).
Four-item scale; each item had a 5-point response scale ranging from “strongly disagree” to “strongly agree” (coded 1–5).
Two-item scale; each item had a 5-point response scale ranging from “strongly disagree” to “strongly agree” (coded 1–5).
*P ≤ .05.