OBJECTIVE: The purpose of this study was to document cost that is associated with multiple births vs singleton births in the United States. STUDY DESIGN: This was a retrospective cohort study that used a claims database. Women 19-45 years old with live-born infants from 2005-2010 were identified. Infant deliveries were identified by International Classification of Diseases, 9th Revision, Clinical Modification diagnosis codes. The cost entailed all payment made by insurers and patients. For mothers, the cost included expenses from 27 weeks before delivery to 1 month after delivery. For infants, the cost contained all expenses until their first birthday. Adjusted cost was estimated by generalized linear models after adjustment for the potential confounding variables with a gamma distribution and a log link. RESULTS: The analysis included 437,924 eligible deliveries. Of them, 97.02% were singletons; 2.85% were twins, and 0.13% was triplets or more. Women with multiple pregnancies had higher systemic and localized comorbidities compared with women with singleton pregnancies (P < .0001). Twins and triplets or more were more likely to have stayed in a neonatal intensive care unit than were singletons (P < .0001). On average, adjusted total all-cause health care cost was $21,458 (95% confidence interval [CI], $21,302-21,614) per delivery with singletons, $104,831 (95% CI, $103,402-106,280) with twins, and $407,199 (95% CI, $384,984-430,695) with triplets or more. CONCLUSION: Pregnancies with the delivery of twins cost approximately 5 times as much when compared with singleton pregnancies; pregnancies with delivery of triplets or more cost nearly 20 times as much.
OBJECTIVE: The purpose of this study was to document cost that is associated with multiple births vs singleton births in the United States. STUDY DESIGN: This was a retrospective cohort study that used a claims database. Women 19-45 years old with live-born infants from 2005-2010 were identified. Infant deliveries were identified by International Classification of Diseases, 9th Revision, Clinical Modification diagnosis codes. The cost entailed all payment made by insurers and patients. For mothers, the cost included expenses from 27 weeks before delivery to 1 month after delivery. For infants, the cost contained all expenses until their first birthday. Adjusted cost was estimated by generalized linear models after adjustment for the potential confounding variables with a gamma distribution and a log link. RESULTS: The analysis included 437,924 eligible deliveries. Of them, 97.02% were singletons; 2.85% were twins, and 0.13% was triplets or more. Women with multiple pregnancies had higher systemic and localized comorbidities compared with women with singleton pregnancies (P < .0001). Twins and triplets or more were more likely to have stayed in a neonatal intensive care unit than were singletons (P < .0001). On average, adjusted total all-cause health care cost was $21,458 (95% confidence interval [CI], $21,302-21,614) per delivery with singletons, $104,831 (95% CI, $103,402-106,280) with twins, and $407,199 (95% CI, $384,984-430,695) with triplets or more. CONCLUSION: Pregnancies with the delivery of twins cost approximately 5 times as much when compared with singleton pregnancies; pregnancies with delivery of triplets or more cost nearly 20 times as much.
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