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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: J Adolesc Health. 2015 May;56(0):S40–S46. doi: 10.1016/j.jadohealth.2014.11.024

Table 3.

Intervention Components Increase HPV Vaccine Initiation Rate among Assigned Groups During Three-Month Study Period

Control Group Intervention Group Crude OR (95% CI) Adjusted OR (95% CI)
Number Assigned Number Initiating Initiation Rate Number Assigned Number Initiating Initiation Rate
Postcards
 Girls 1236 44 3.6% 1234 68 5.5% 1.6 (1.1, 2.3)* 1.6 (1.1, 2.4)*
 Boys 1588 85 5.4% 1605 91 5.7% 1.1 (0.8, 1.5) 1.1 (0.8, 1.5)
HIT
 Girls 1742 68 4.0% 728 44 6.0% 1.5 (1.0, 2.3)* 1.3 (0.9, 2.0)
 Boys 2147 103 4.8% 1046 73 7.0% 1.4 (1.0, 2.0)* 1.4 (1.0, 2.0)*
Combined HIT and Postcards
 Girls 869 27 3.1% 361 27 7.5% 2.4 (1.4, 4.3)* 2.0 (1.1, 3.7)*
 Boys 1067 50 4.7% 525 38 7.2% 1.6 (1.0, 2.5)* 1.6 (1.0, 2.5)

Adjusted for age, race/ethnicity, and program type.

*

95% confidence interval indicates statistically significant differences between intervention arms.