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Table 2 Comparison of the relative risk (RR) for children’s VarV and DTP vaccination

From: Evaluation of two health education interventions to improve the varicella vaccination: a randomized controlled trial from a province in the east China

Group 12 months of age (n/N) 24 months of age (n/N) DTP4 (n/N) RR -VarV/DTP4 b
Video 47/66 57/66 63/66 0.3 (95% CI:0.1–1.2)
Booklet 41/67 51/67 64/67 0.2 (95% CI:0.04–0.5)
Control 26/67 38/67 64/67 0.1 (95% CI:0.02–0.2)
RR -video a 3.9 (95% CI:1.9-8.0) 4.8 (95% CI:2.1–11.3)
RR -booklet a 2.5 (95% CI:1.2-5.0) 2.4 (95% CI:1.2–5.1)
  1. aThe reference for calculating the RR was the control group
  2. bThe reference for calculating the RR was the coverage of DTP4