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KMID : 0892719970010020145
Journal of the Korean Society of Maternal and Child Health
1997 Volume.1 No. 2 p.145 ~ p.156
Effects of Feeding Type on the Morbidity of Infants
Shin Nam-Kyun

Park Jung-Han
Jun Hae-Ri
Abstract
To evaluate the effects of feeding type on the morbidity of infants, the records of well-baby clinic, outpatient clinic, and inpatient were reviewed for 954 normal infants who were born at the Taegu Fatima Hospital between January 1 and December 31, 1981 and had visited the well-baby clinic of the same hospital in the same period.

Among the total of 954 infants, 419(44%) were on breast-feeding, 284(31%) on mix-feeding with breast milk and formula, and 241(25%) on bottle-feeding, There were no remarkable differences among the three groups of feeding type in the sociodemographic characteristics.

The proportion of infants who visited the outpatient clinic in 1981 were 39.5%in the breast-feeding group, 38.4%in the mix-feeding group, and 40.7%in the bottle-feeding group and differences were not statistically signigicant. The outpatient clinic(OPD) visit rate for upper respiratory tract infection(URI) was 24.3% in the breast-feeding group compared with 17.8% in the bottle-feeding group. The rate for gastroenteritis was 5.3% in the breast-feeding group and 10% in the bottle-feeding group. The difference in the OPD vist rates for URI and gastroenteritis between two feeding groups were not statistically significant. However, the OPD visit rate for jaundice of the bottle-feeding group(7.9%)was significantly higher(p<0.005)than that of the breast-feeding group(1.2%).

The overall hospitalization rate of breast-feeding group in 1981 was 4.8% which was significantly lower than those of the bottle-feeding group and mixed-feeding group, 26.9% and 10.9%, respectively(p<0.005). The hospitalization rate for neonatal hyperbilirubinemia(14.9%) accounted for over one-half of the total hospitalization of the bottle-feeding group and this was significantly higher than those of the other two groups, 7.1% of mixed-feeding and 1.0%of breast-feeding. However, it is not likely that all of the neonatal hyperbilirubinemia were caused by the bottle-feeding but more likely that the neonates with hyperbilirubinemia had been hospitalized for therapy and put on the bottle-feeding.

The hospitalization rate of the bottle-feeding group for all the other diseases except neonatal hyperbilirubinemia was 12% compared with 3.8% of the breast-feeding group(p<0.005). The hospitalization rate of the bottle-feeding group for respiratory tract infection was 6.6%,; the mixed-feeding group, 1.4%; and the breast-feeding group, 1.0%(p<0.005). The rate for septicemia was 4.6% for the bottle-feeding group, 2.4% for the mixed-feeding group, and 1.4% for the breast-feeding group(p<0.05). The mean hospital days were 7.5days in the bottle-feeding group, 6.8days in the mixed-feeding group, and 6.4days in the breast-feeding group and the differences of the means did not reach the statistical significance level of 0.05.

Since there were no remarkable differences in the sociodemographic characteristics among the three feeding groups, the findings that the breast-feeding group had a lower OPD visit rate for all causes except URI and a lower hospitalization rate for all causes except neonatal hyperbilirubinemia than the bottle-feeding group, and that the OPD visit rate and hospitalization rate of the mixed-feeding group were between the rates for the breast-feeding group and the bottle-feeding group, are consistent with the findings of other studies that showed a protective effect of the breast milk against infections.
KEYWORD
Infant feeding, breast-feeding, morbidity, infection, hospitalization
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