A Comparison of Two Indices of Adequacy of Prenatal Care Utilization

In a case-control study, we compared the ability of two indices of antenatal care use, the new Adequacy of Prenatal Care Utilization (APNCU) index and the Kessner index, to predict low birthweight. In crude analyses, both indices showed a linear trend with low birthweight. After controlling for conf...

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Bibliographic Details
Published in:Epidemiology (Cambridge, Mass.) Mass.), 1996-11, Vol.7 (6), p.648-650
Main Authors: Delgado-Rodríguez, Miguel, Gómez-Olmedo, Montserrat, Bueno-Cavanillas, Aurora, Gálvez-Vargas, Ramón
Format: Article
Language:English
Subjects:
Biological and medical sciences
Brief Reports
Case-Control Studies
Epidemiology
Gestational age
Gynecology. Andrology. Obstetrics
Health care utilization
Humans
Infant, Low Birth Weight
Infant, Newborn
Logistic Models
Logistic regression
Low birth weight
Management. Prenatal diagnosis
Medical sciences
Newborns
Nonprofit hospitals
Pregnancy
Pregnancy. Fetus. Placenta
Prenatal care
Prenatal Care - utilization
Public health
Risk Factors
Spain
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Summary:In a case-control study, we compared the ability of two indices of antenatal care use, the new Adequacy of Prenatal Care Utilization (APNCU) index and the Kessner index, to predict low birthweight. In crude analyses, both indices showed a linear trend with low birthweight. After controlling for confounding, however, the APNCU index was unrelated to low birthweight. To learn whether the Kessner index added explanatory information to the APNCU index (or vice versa), we regressed the APNCU index on the Kessner index (and vice versa) and computed residuals for both indices. In logistic regression analyses, the residuals of the Kessner index added meaningful information to the APNCU index, whereas the opposite did not occur.
ISSN:1044-3983
1531-5487
DOI:10.1097/00001648-199611000-00016