1.
Percentages of SAM meeting the eligibility criteria (weighted data).
2.
Eligibility criteria associated to sociodemographic, economic, migration related factors and forced sex.
Interpretation of the results of the logistic regression analyses for the separate eligibility criteria.
Placebo questionnaire (Dutch version).
Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guideline.
Univariable logistic regression for preterm birth per variable before each childbirth.
Logistic regression for preterm birth for women with no CIN, untreated CIN, and treated CIN before each childbirth.
Logistic regression for preterm birth per volume taken from the cervix before each childbirth.
Logistic regression for preterm birth per grade of CIN and volume taken from the cervix before each childbirth.
Logistic regression for maternal outcomes for women with no CIN, untreated CIN, and treated CIN before each childbirth.