Table 1

Survey characteristics of Natsal-2, Natsal-3 and FECOND

Survey characteristicNatsal-2Natsal-3FECOND
Study designNationally representative probability survey
Women aged 17–45 years (n)678156084173
Survey modeFace-to-face interview,
CASI for sensitive questions
Telephone interview
Survey mode for abortion questionsCASITelephone interview
Data collection for abortionsDirect questionPregnancy history
  • CASI, computer-assisted self-administered interview; FECOND, French Fertility, Contraception and Sexual Dysfunction Survey; Natsal, National Survey of Sexual Attitudes and Lifestyles.