Fig. 2From: Incidence and risk factors of infertility among couples who desire a first and second child in Shanghai, China: a facility-based prospective cohort studyKaplan–Meier curve for time to pregnancy. Kaplan–Meier curve for time to pregnancy according to child intention. Quicker to get pregnant is indicated for women with second child intention (log-rank P < 0.001)Back to article page