EPIDEMIOLOGIC CHARACTERISTICS OF NECROTIZING ENTEROCOLITIS: A POPULATION-BASED STUDY

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Abstract
The authors studied retrospectively the epidemiologic characteristics of necrotizing enterocolitis occurring among Georgia infants born during 1977 and 1978; 148 cases of necrotizing enterocolitis were identified. The highest incidence rate for necrotizing enterocolitis occurred among infants weighing 751–1000 g at birth and declined with increasing birth weight to less than 0.2 cases per 1000 live births among infants weighing more than 2500 g at birth. The overall incidence rate for blacks was significantly greater than that for whites (1.6 vs. 0.5 cases per 1000 live births, p = 0.01). The overall case fatality ratio was 38.5%; there were no differences in these ratios between blacks and whites. Necrotizing enterocoiltls accounted for 15% of all deaths after the first week of life for infants weighing 1500 g or less at birth. If Georgia incidence rates and fatality ratios are applied to 1978 US births, it is estimated that 2210 cases of necrotizing enterocolitis with over 900 associated deaths would have occurred.

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