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Estimation of asthma incidence among low-income children in Texas: a novel approach using Medicaid claims data.

Authors
Wendt-JK; Symanski-E; Du-XL
Source
Am J Epidemiol 2012 Oct; 176(8):744-750
NIOSHTIC No.
20041989
Abstract
Few recent estimates of childhood asthma incidence exist in the literature, although the importance of incidence surveillance for understanding asthma risk factors has been recognized. Asthma prevalence, morbidity, and mortality reports have repeatedly shown that low-income children are disproportionately impacted by the disease. The aim of this study was to demonstrate the utility of Medicaid claims data for providing statewide estimates of asthma incidence. Medicaid analytic extract (MAX) data for Texas children aged 0-17 years enrolled in Medicaid between 2004 and 2007 were used to estimate incidence overall and by age group, gender, race, and county of residence. A =13-month period of continuous enrollment was required in order to distinguish incident from prevalent cases identified in the claims data. The age-adjusted incidence of asthma was 4.26/100 person-years during 2005-2007, higher than reported in other populations. Incidence rates decreased with age, were higher for males than females, differed by race, and tended to be higher in rural than urban areas. This study demonstrates the utility of Medicaid analytic extract data for estimating asthma incidence and describes the methodology required for a population with unstable enrollment.
Keywords
Epidemiology; Surveillance-programs; Respiratory-system-disorders; Pulmonary-system-disorders; Lung-disorders; Bronchial-asthma; Children; Sociological-factors; Risk-factors; Medical-care; Health-care; Age-groups; Sex-factors; Racial-factors; Demographic-characteristics; Author Keywords: asthma; child; incidence; Medicaid
Contact
Dr. Elaine Symanski, University of Texas School of Public Health, 1200 Herman Pressler Drive, RAS E643, Houston, TX 77030
CODEN
AJEPAS
Publication Date
20121015
Document Type
Journal Article
Email Address
Elaine.Symanski@uth.tmc.edu
Funding Type
Grant
Fiscal Year
2013
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008421; B20130124
Issue of Publication
8
ISSN
0002-9262
Source Name
American Journal of Epidemiology
State
TX
Performing Organization
University of Texas, Health Science Center, Houston, Texas
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