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Table 3 Knowledge about Emergency Contraception Pills by those who had ever heard about them (n = 112) with yes answers

From: Awareness and attitudes towards emergency contraceptive pills among young people in the entertainment places, Vientiane City, Lao PDR

Variables Male Female Total Chi-square P-value Effect size
  n = 24 % N = 88 % N = 112 %    
Knowledge of benefit using ECPs  
 Can prevent pregnancy 22 91.7 78 88.6 100 89.3 .0.181 .0.671 0.040
 Can prevent HIV/AIDS 3 12.5 2 2.3 5 4.5 4.626 0.032 0.203
 Can cause abortion 6 25.0 34 38.6 40 35.7 1.527 0.217 0.116
Knowledge of usage ECPs  
 Take one contraception pill per day 8 33.3 23 26.1 31 27.7 0.487 0.48.5 0.066
 Take contraception pill after sexual intercourse within 72 hrs 3 12.5 17 19.3 20 17.9 0.5976 0.439 0.073
 Taking contraception pills when missing menses 0 0 4 4.5 4 4.5 NA NA  
 Hormonal injection every three months 0 0 3 3.4 3 2.7 NA NA  
  1. Note: NA = Not applicable.
  2. .10 - small effect size.
  3. .30 - medium effect size.
  4. .50 - large effect size.