This is a study on physical growth during infancy, to evaluate normal growth patterns-and to clarify if there is any difference between the results studied by longitudinal and by cross-sectional study and influencing factors on growth, carried out during the period of March 1983 through August 1985.
The results were as follows:
1. Considerable differences of weight, height and head circumference were noted according to sex and age differences(Table 1-a).
2. Growth rates were decreased with age and shown comparable patterns in groups below 4 month, 5-8 month and 9-12 month of age(Table 1-a, b, 2-a, b, c and Fig. 1∼6).
3. Incremental rates of weight and height were decreased rapidly during first several months and thereafter decreased slowly in both sexes, tut those of head circumference decreased throughout infancy(Table 3-a, b, c and Fig. 7~9).
4. There were significant differences of growth between two studies by longitudinal and by cross-sectional method in both sexes and in most age groups(Table 2-a, b, c).
5. Infant growth was influenced by the parent´s physiques, birth weight and illness hut no by the types of milk.
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