Table 1 Information collected in the second questionnaire

Outcomes

Quality of Life [30], sexual functioning [31], anxiety and depression [32], cervical stenosis, obstetric outcomes

Confounders

Socio-demographic factors: Age, ethnicity [33], deprivation [28], relationships, education

Lifestyle factors: smoking, alcohol, problem drug use

Health-related factors: obstetric history, history of sexually transmitted disease, number of visits to GP, physical health problems