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. 2021 Sep 8;24:101550. doi: 10.1016/j.pmedr.2021.101550

Table 2.

Correlates of looking for second medical opinions about HPV vaccination (n = 906).

# of parents who looked
for second opinions/
Total in category (%)
Bivariate OR (95% CI) Multivariable OR (95% CI)
Overall 140/906 (15) NA NA
Child characteristics
Sex
Female 72/475 (15) Ref
Male 68/431 (16) 1.05 (0.73, 1.50)
Age, years
15–17 43/373 (12) Ref Ref
11–14 97/533 (18) 1.71 (1.16, 2.51)** 1.72 (1.14, 2.60)*
HPV vaccine doses received
0 doses 44/247 (18) Ref
≥1 doses 96/659 (15) 0.79 (0.53, 1.16)
Parent and household characteristics
Sex
Female 87/683 (13) Ref Ref
Male 53/223 (24) 2.14 (1.46, 3.13)** 2.01 (1.32, 3.05)**
Race/Ethnicity
Non-Hispanic White 83/635 (13) Ref Ref
Non-Hispanic Black 27/112 (24) 2.11 (1.29, 3.45)** 1.52 (0.89, 2.60)
Hispanic 23/110 (21) 1.76 (1.05, 2.94)* 1.73 (0.99, 3.03)
Other 7/49 (14) 1.11 (0.48. 2.55) 1.12 (0.46, 2.75)
Education
High school degree or less 34/202 (17) Ref
Some college 41/372 (11) 0.61 (0.37, 1.00)
College degree or higher 65/332 (20) 1.20 (0.76, 1.90)
Annual household income
<$40,000 41/268 (15) Ref
$40,000–$79,999 45/289 (16) 1.02 (0.64, 1.62)
≥$80,000 50/320 (16) 1.03 (0.65, 1.61)
Not reported 4/29 (14) 0.89 (0.29, 2.68)
Region
Northeast 20/137 (15) Ref
Midwest 27/174 (16) 1.07 (0.57, 2.01)
South 33/272 (12) 0.81 (0.44, 1.47)
West 60/323 (19) 1.33 (0.77, 2.32)
Vaccine attitudes
Self-reported HPV knowledge
Know less than health care provider 24/337 (7) Ref Ref
Know the same as health care provider 49/337 (15) 2.22 (1.33, 3.71)** 1.94 (1.13, 3.30)*
Know more than health care provider 67/232 (29) 5.30 (3.20, 8.76)** 3.97 (2.35, 6.73)**
Exposure to social media information
No 58/565 (10) Ref Ref
Yes 82/341 (24) 2.77 (1.92, 3.99)** 2.50 (1.69, 3.69)**
Vaccine confidence score
High 56/507 (11) Ref Ref
Low 84/399 (21) 2.15 (1.49, 3.10)** 1.74 (1.14, 2.66)*
Social norms favoring HPV vaccination
Agree 90/678 (13) Ref Ref
Disagree/neither 50/228 (22) 1.84 (1.25, 2.69)** 1.61 (1.03, 2.51)*

Note. HPV = Human papillomavirus; OR = Odds ratio; CI = confidence interval; Ref = Referent group; NA = Not applicable. Dashes (−) indicate the variable was not included in the multivariable model because it was not statistically significant in bivariate analysis. * p < .05; ** p < .01.