ABSTRACT
OBJECTIVE: To determine the neonatal mortality risk according to gestational age and birth weight. MATERIAL AND METHODS: The cohort consisted of 19,668 newborns of Centro Médico Nacional (National Medical Center) Ignacio García Téllez, a tertiary level healthcare institution of the Instituto Mexicano del Seguro Social (Mexican Institute of Social Security, IMSS) of the Yucatan Peninsula. All newborns discharged from the hospital between January 1st, 1995 and October 31st, 1999 were included in the study. Birth weight, gestational age, and conditions upon discharge were recorded. Absolute risk (AR) of mortality was calculated for each week-of-gestation- and birth group. RESULTS: Observed AR in newborns 34 to 44 weeks of gestational age and weighing at least 2,250 g was 0.4, while that for those 26 to 32 weeks of gestational age and weighing between 1000 g was 15%. CONCLUSIONS: AR of neonatal mortality increased inversely proportional to gestational age and birth weight. These data can be used as reference values for our hospital and for comparison with other hospitals. The English version of this paper is available at: http://www.insp.mx/salud/index.html.
Subject(s)
Infant Mortality , Birth Weight , Cohort Studies , Data Display , Female , Gestational Age , Hospitals, Federal/statistics & numerical data , Hospitals, Maternity/statistics & numerical data , Hospitals, Pediatric/statistics & numerical data , Humans , Infant, Low Birth Weight , Infant, Newborn , Infant, Premature , Male , Mexico , Pregnancy , Pregnancy Outcome , Pregnancy, High-Risk , Reference Standards , Risk Factors , Social SecurityABSTRACT
OBJECTIVE: To determine the neonatal mortality risk according to gestational age and birth weight. MATERIAL AND METHODS: The cohort consisted of 19,668 newborns of Centro MÚdico Nacional (National Medical Center) Ignacio GarcÝa TÚllez, a tertiary level healthcare institution of the Instituto Mexicano del Seguro Social (Mexican Institute of Social Security, IMSS) of the Yucatan Peninsula. All newborns discharged from the hospital between January 1st, 1995 and October 31st, 1999 were included in the study. Birth weight, gestational age, and conditions upon discharge were recorded. Absolute risk (AR) of mortality was calculated for each week-of-gestation- and birth group. RESULTS: Observed AR in newborns 34 to 44 weeks of gestational age and weighing at least 2,250 g was 0.4, while that for those 26 to 32 weeks of gestational age and weighing between 1000 g was 15. CONCLUSIONS: AR of neonatal mortality increased inversely proportional to gestational age and birth weight. These data can be used as reference values for our hospital and for comparison with other hospitals.
