Morbidity and growth performance of infants in Madura, Indonesia.

Between January 1987 and July 1988, all children born in two villages on the island of Madura, Indonesia were visited weekly by a field worker trained to interview mothers on disease symptoms. The maximum recall period was 1 week. All infants were measured (weight and height) at monthly intervals. Information on growth and morbidity is analysed for infants from birth until the age of 11 months. Morbidity, defined as acute respiratory tract infection (ARI), diarrhoea, fever and other diseases, is analysed over 4-week periods and related to growth performance. In total, there are 1373 4-week reporting periods with morbidity information from birth to the age of 12 months. Of all the diseases recorded (1021), 47% were ARI, 13% diarrhoea, 14% fever and 26% other diseases. The average (SD) duration of diarrhoea was 7 (11) days, ARI 14 (9) days, fever 6 (4) days and 16 (10) days for other diseases. The most striking results in this analysis are: (i) the lack of a relationship between morbidity and growth (either linear or weight) during the 1st 6 months of life; (ii) the existence of a relationship between illness and weight increment for which only ARI showed significant influence for infants of 6 months and more; (iii) the lack of a relationship between morbidity and linear growth performance at all ages; and (iv) the fact that no cumulative effect of disease on growth performance was found to explain the observations.