title: Postpartum amenorrhoea among Manipuri women: a survival analysis.
abstract: Among the three major components of a closed birth interval, waiting time to conception can somehow be managed with effective contraceptives while gestation is universally constant in its duration; the duration of postpartum amenorrhoea (PPA) varies in complex nature. The present study aimed to investigate the proximate factors influencing the duration of PPA. A community-based, cross-sectional study was conducted in four valley districts of Manipur, India, during 1 August-31 December 2009, to analyze the differentials and determinants of duration of PPA, applying the survival analysis technique. In total, 1,225 ever-married women were selected through two-stage cluster sampling. The median duration of PPA was 5.7 months. Among the 11 explanatory variables of interest, only three variables--place of residence (p<0.05), infant mortality from preceding pregnancy (p<0.01), and duration of breastfeeding (p<0.01)--had a significant effect on the duration of PPA. The findings may be used as baseline information for future researchers and maternal health policy-makers.
authors.affiliation: Directorate of Census Operations, Porompat, Manipur, India. biostatsana@gmail.com
authors.forename: N Sanajaoba
authors.initials: NS
authors.lastname: Singh
authors.forename: N Sharat
authors.initials: NS
authors.lastname: Singh
authors.forename: R K
authors.initials: RK
authors.lastname: Narendra
mesh_terms: D000293:Adolescent; D000328:Adult; D000568:Amenorrhea / Q000453:epidemiology*; D001942:Breast Feeding; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007194:India / Q000453:epidemiology; D007226:Infant Mortality; D007231:Infant, Newborn; D008423:Maternal Age; D049590:Postpartum Period / Q000502:physiology; D011247:Pregnancy; D012307:Risk Factors; D016019:Survival Analysis; D013997:Time Factors; D055815:Young Adult