Objectives. We investigated the reliability and validity of three self-reported indicators from the Pregnancy Risk Assessment Monitoring System (PRAMS) survey.Methods. We used 2008 PRAMS (n515,646) data from 12 states that had implemented the 2003 revised U.S. Certificate of Live Birth. We estimated reliability by kappa coefficient and validity by sensitivity and specificity using the birth certificate data as the reference for the following: prenatal participation in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC); Medicaid payment for delivery; and breastfeeding initiation. These indicators were examined across several demographic subgroups.results. The reliability was high for all three measures: 0.81 for WIC participation, 0.67 for Medicaid payment of delivery, and 0.72 for breastfeeding initiation. The validity of PRAMS indicators was also high: WIC participation (sensitivity 5 90.8%, specificity 5 90.6%), Medicaid payment for delivery (sensitivity 5 82.4%, specificity 5 85.6%), and breastfeeding initiation (sensitivity 5 94.3%, specificity 5 76.0%). The prevalence estimates were higher on PRAMS than the birth certificate for each of the indicators except Medicaid-paid delivery among non-Hispanic black women. Kappa values within most subgroups remained in the moderate range (0.40-0.80). Sensitivity and specificity values were lower for Hispanic women who responded to the PRAMS survey in Spanish and for breastfeeding initiation among women who delivered very low birthweight and very preterm infants.conclusion. The validity and reliability of the PRAMS data for measures assessed were high. Our findings support the use of PRAMS data for epidemiological surveillance, research, and planning.
This paper examines racial differences in trends and predictors of prone and lateral infant sleep positioning among South Carolina mothers and infants. Pregnancy Risk Assessment Monitoring System data were used to analyze linear trends in prone, lateral, and supine infant sleep positioning among 14,648 mother-infant pairs from 1996 to 2007. Logistic regression models were used to examine the predictors of prone and lateral positioning among 9,015 mother-infant pairs from 2000 to 2007. From 1996 to 2007, white infants experienced a reduction in both prone and lateral positioning and an increase in supine positioning (28.2-66.7%), while black infants had smaller decreases in prone and lateral positioning and a smaller increase in supine positioning (22.6-47.1%) than white infants. Compared to births in 2000-2005, births after the explicit recommendation that infants not be placed in the lateral sleep position (2006-2007) were associated with decreased odds of lateral positioning among white infants (odds ratio [OR]: 0.66; 95% confidence interval [CI]: 0.51, 0.87) but not among black infants. The significant predictors of white infants being placed in the prone position were different from the predictors for black infants. Additionally, with regard to lateral sleep positioning, more significant predictors were observed among white infants than black infants. These findings suggest that efforts are warranted to increase the prevalence of supine sleep positioning, especially among black infants. Race-specific programs may efficiently reduce non-supine sleep positioning to help narrow racial gaps in sudden infant death syndrome.
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