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Table 4 Comparison of the mean scores of the knowledge’s domains before and after the intervention in the two groups

From: A sex education program for teachers of preschool children: a quasi-experimental study in Iran

Domains (score range)GroupBefore intervention Mean ± SDaAfter intervention Mean ± SDaPaired t-testEffect sizePc
Principles of Sexual education (0–4)Experimental Control3.20 ± 0.82 3.20 ± 1.01 Pb = 13.82 ± 0.38 3.12 ± 1.11 Pb < 0.001P < 0.001 p = 0.320.7<0.001
Sexual identity (0–3)Experimental Control1.35 ± 0.83 1.52 ± 0.9 Pb = 0.372.77 ± 0.42 1.5 ± 0.93 Pb < 0.001P < 0.001 P = 0.571.38<0.001
Sexual development stages and correct approaches for sex education (0–7)Experimental Control4.87 ± 1.06 4.52 ± 1.06 Pb = 0.146.62 ± 0.54 4.47 ± 1.17 Pb < 0.001P < 0.001 P = 0.481.94<0.001
Children’s sexual questions (0–4)Experimental Control3.12 ± 0.82 2.92 ± 0.94 Pb = 0.313.87 ± 0.33 2.90 ± 0.92 Pb < 0.001P < 0.001 P = 0.740.87<0.001
Masturbation in children (0–5)Experimental Control3.55 ± 0.67 3.30 ± 0.79 Pb = 0.134.92 ± 0.26 3.30 ± 0.75 Pb < 0.001P < 0.001 P = 11.49<0.001
child sexual abuse (0–8)Experimental Control5.90 ± 1.29 5.67 ± 1.5 Pb = 0.477.45 ± 0.67 5.62 ± 1.5 Pb < 0.001P < 0.001 P = 0.421.67<0.001
  1. aStandard Deviation bIndependent- samples t- test cDerived from ANCOVA adjusted for baseline score
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