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Table 3 Comparisons of perceived benefits, perceived barriers, self-efficacy and practice between two groups

From: A behavioral strategy to minimize air pollution exposure in pregnant women: a randomized controlled trial

  Before intervention After intervention
  Intervention (N = 55) Control (N = 55) Intervention (N = 53) Control (N = 51)
  Mean (SD) Mean (SD) Pa Mean (SD) Mean (SD) Pa
Perceived benefits 30.46 (3.97) 30.02 (3.66) 054 32.5 (2.62) 29.7 (2.65) <0.001
Perceived barriers 11.7 (5.10) 12.9 (5.3) 0.24 7.42 (2.21) 10.3 (3.13) <0.001
Self-efficacy 11.92 (2.93) 13.08 (2.64) 0.056 15.2 (1.45) 12.7 (2.12) <0.001
Practice 11.2 (2.1) 11.5 (2.6) 0.73 19.4 (1.75) 10.6 (2.1) <0.001
  1. aDerived from t-test