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Figure 1: Adjusted SF-36 scores of study subjects according to the frequency of Si-Wu-Tang use during the 6-month postpartum period and stratified by previous Sheng-Hua-Tang use. Values were based on ANCOVA tests and adjusted for mother’s age, education, family income per month, employment status, parity, method of delivery, breastfeeding, postpartum nursing centre, out-patient clinic visits during the past 4 weeks, infant low birth weight or preterm, primary nursery by mother, Sheng-Hua-Tang use, and duration of Sheng-Hua-Tang and Si-Wu-Tang use. *,# Scores differ significantly from each other according to a least significant difference (LSD) multiple comparison test. I bars indicate standard errors.