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Table 2 Baseline, 1-year Follow-up, Change (including relevant percentile ranks) in CHIAS Scores among North-Central Wisconsin Parents (N = 25)

From: Determinants of human papillomavirus vaccine attitudes: an interview of Wisconsin parents

CHIAS scores (1–4 points) Baseline Follow-up Change (follow-up minus baseline points)
Barriers 1.3 ± 0.4 1.2 ± 0.3 −0.1 ± 0.4
 < 20th percentile rank    28%
 > 80th percentile rank    16%
Harms 2.0 ± 0.7 2.0 ± 0.6 0.0 ± 0.4
 < 20th percentile    20%
 > 80th percentile    20%
Uncertainties 1.8 ± 0.6 1.7 ± 0.6 − 0.1 ± 0.6
 < 20th percentile    24%
 > 80th percentile    24%
Ineffectiveness 1.9 ± 0.9 1.4 ± 1.0 −0.5 ± 0.9
 < 20th percentile    36%
 > 80th percentile    16%
  1. Values are reported as mean ± SD or percent of sample