Fig. 3From: Prevalence of reproductive tract infections among women preparing to conceive in Chongqing, China: trends and risk factorsThe trend of the prevalence of RTI and average scores of three factors among childbearing women by age from 2012 to 2016. Factor 1 (“physiology factor”) included age, gravidity, parity and history of induced abortion, Factor 2 (“social factor”) included education level and occupation, Factor 3 (“disease factor”) reflected the change of the history of spontaneous abortionBack to article page