Pregnant? Validity of the Pregnancy Checkbox on Death Certificates in 4 States, and Characteristics Associated With Pregnancy Checkbox Errors

Catalano, Angelica; Davis, Nicole L.; Petersen, Emily E.; Harrison, Cecelia; Kieltyka, Lyn; You, Mei; Conrey, Elizabeth J.; Ewing, Alexander C.; Callaghan, William M.; Goodman, Dave

doi:10.1097/01.aoa.0000719416.30387.be

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“…Mortality studies that rely on death certificates to document pregnancy are prone to misclassification of pregnancy status. 57 Through the use of linked databases, we were able to efficiently and reliably identify eligible women and live births, prescription fills, important covariates, and timing and cause of death. Finally, nearly 18% of women in our study and 13% of vaginal births filled more than one postpartum opioid prescription.…”

Section: Strengths and Limitationsmentioning

confidence: 99%

Risk of Death at 1 Year Following Postpartum Opioid Exposure

et al. 2022

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Objective Opioids are commonly prescribed to women for acute pain following childbirth. Postpartum prescription opioid exposure is associated with adverse opioid-related morbidities but the association with all-cause mortality is not well studied. This study aimed to examine the association between postpartum opioid prescription fills and the 1-year risk of all-cause mortality among women with live births. Methods In a retrospective cohort study of live births among women enrolled in Tennessee Medicaid (TennCare) between 2007 and 2015, we compared women who filled two or more postpartum outpatient opioid prescriptions (up to 41 days of postdelivery discharge) to women who filled one or fewer opioid prescription. Women were followed from day 42 postdelivery discharge through 365 days of follow-up or date of death. Deaths were identified using linked death certificates (2007–2016). We used Cox's proportional hazard regression and inverse probability of treatment weights to compare time to death between exposure groups while adjusting for relevant confounders. We also examined effect modification by delivery route, race, opioid use disorder, use of benzodiazepines, and mental health condition diagnosis. Results Among 264,135 eligible births, 216,762 (82.1%) had one or fewer maternal postpartum opioid fills and 47,373 (17.9%) had two or more fills. There were 182 deaths during follow-up. The mortality rate was higher in women with two or more fills (120.5 per 100,000 person-years) than in those with one or fewer (57.7 per 100,000 person-years). The risk of maternal death remained higher in participants exposed to two or more opioid fills after accounting for relevant covariates using inverse probability of treatment weighting (adjusted hazard ratio: 1.46 [95% confidence interval: 1.01, 2.09]). Findings from stratified analyses were consistent with main findings. Conclusion Filling two or more opioid prescriptions during the postpartum period was associated with a significant increase in 1-year risk of death among new mothers. Key Points

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Section: Strengths and Limitationsmentioning

confidence: 99%