title: [Risk assessment of factors related to lactation of breast-feeding women by multichotomous logistic regression with stepwise procedure].
abstract: Based on Dubin and Pasternack's solution of parsimonious parameters, the authors proposed a procedure of stepwise selection of factors for establishing the Multichotomous logistic regression "best" model. Score statistic was used to select factors into model. Ratio of likelihood function was used to eliminate factors from model. The data of lactation from 129 breast-feeding women living in rural area have been analysed by the procedure. It showed that the first breast-feeding to the newborn of over 48 hours from her childbirth has negative effect while good appetite has positive effect on milk secretion. The epidemiological meaning of parameters estimated from the data was illustrated in detail.
authors.forename: S L
authors.initials: SL
authors.lastname: Yu
mesh_terms: D001942:Breast Feeding; D005260:Female; D006801:Humans; D007774:Lactation / Q000502:physiology*; D011247:Pregnancy; D012044:Regression Analysis; D012307:Risk Factors