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0 Mother BMIc)Gestational AgeAt Birth142Figure 1　Comparison of weight gain (gram/day)*BW gain: Body weight gain**Compared using student t-test and p-value of <0.05 was considered statistically significant.a) Data are shown as the number (percentage) of subjects. b) A p-value of <0.05 was considered statistically significant.GenderParityType of FeedingAt One MonthWeight gain(gram/day)a) Data are shown as mean ± standard deviation.b) A p-value of <0.05 was considered statistically significant.c) BMI: Body Mass IndexMaleFemaleFirst ChildNotBreast MilkMixFormula MilkBody Weight (gram)Body Length (cm)Head Circumference (cm)Body Weight (gram)Body Length (cm)Head Circumference (cm)otic groups (Figure 1). The mean weight gain in probiotic groups are 36.09 ± 8.23 gram/day compared to newborns in control groups is 32.86 ± 9.05 gram/day. Other anthropometric data of the newborns in the two groups were not different significantly. Anthropometric data such as body weight, body length, and head circumferences are summarized in Table 2. Also, a comparison of maternal BMI and gestational age were shown in Table 2.Figure 2 shows the mean bilirubin level trend from day 1 to day 5. The mean bilirubin level on day 1 is 3.00 ± 1.08 mg/dL in the control groups and 3.03 ± 1.21 mg/dL in probiotic groups, which showed no differences between both groups. On day 2, the mean bilirubin level is increasing almost Table 1　Demographic and Characteristics of Infants and Mothera)Table 2　Anthropometric Data of Infants and Mothera)Control(n=99)Probiotic(n=54)56 (57%)43 (43%)33 (33%)66 (67%)29 (29%)70 (71%)Control (n=99)21.18 ± 2.5438.56 ± 1.122991 ± 324.248.93 ± 1.4834.02 ± 1.104058 ± 419.654.16 ± 1.8236.39 ± 1.1632.86 ± 9.05Significanceb)32 (59%)22 (41%)P > 0.0514 (26%)40 (74%)P > 0.0518 (33%)35 (65%)1 (2%)P > 0.05Probiotic (n=54)21.07 ± 2.4838.57 ± 1.183001 ± 352.948.97 ± 1.9334.25 ± 1.214198 ± 436.854.12 ± 1.8236.55 ± 1.1336.09 ± 8.23Significanceb)P > 0.05P > 0.05P > 0.05P > 0.05P > 0.05P > 0.05P > 0.05P > 0.05P = 0.03