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Table 2 Comparison of prevalence of risk factors for APOs before and after the intervention

From: A cohort study of a tailored web intervention for preconception care

  Prevalence of risk factors for APOs after intervention n = 282 (%) Difference, % (95% CI) P
No folic acid supplementation 82 (29.1) −23.4 (−31.0; 15.36) <0.001
BMI < 18.5 16 (5.7) −2.48 (−6.84; −1.79) 0.25
BMI ≥ 25 61 (21.6) 3.19 (−3.43; 9.78) 0.34
Need of vaccination against rubella 16 (5.7) −13.83 (−19.29; 8.46) <0.001
Need of vaccination against varicella 16 (5.7) −7.45 (−12.38; 2.64) 0.002
Need of vaccination against hepatitis b 54 (19.1) −22.34 (−29.5; −14.84) <0.001
Smoking, any quantity 16 (5.7) −7.45 (−12.38; 2.64) 0.002
Drinking alcohol, any quantity 71 (25.2) −46.45 (−53.28; −38.75) <0.001