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Ray JG, Fu L, Austin PC, Park AL, Brown HK, Grandi SM, Vandermorris A, Boblitz A, Cohen E. Teen Pregnancy and Risk of Premature Mortality. JAMA Netw Open 2024; 7:e241833. [PMID: 38483391 PMCID: PMC10940968 DOI: 10.1001/jamanetworkopen.2024.1833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/15/2024] [Indexed: 03/17/2024] Open
Abstract
Importance Unintentional injury, suicide, and homicide are leading causes of death among young females. Teen pregnancy may be a marker of adverse life experiences. Objective To evaluate the risk of premature mortality from 12 years of age onward in association with number of teen pregnancies and age at pregnancy. Design, Setting, and Participants This population-based cohort study was conducted among all females alive at 12 years of age from April 1, 1991, to March 31, 2021, in Ontario, Canada (the most populous province, which has universal health care and data collection). The study period ended March 31, 2022. Exposures The main exposure was number of teen pregnancies between 12 and 19 years of age (0, 1, or ≥2). Secondary exposures included how the teen pregnancy ended (birth or miscarriage vs induced abortion) and age at first teen pregnancy. Main Outcomes and Measures The main outcome was all-cause mortality starting at 12 years of age. Hazard ratios (HRs) were adjusted for year of birth, comorbidities at 9 to 11 years of age, and area-level education, income level, and rurality. Results Of 2 242 929 teenagers, 163 124 (7.3%) experienced a pregnancy at a median age of 18 years (IQR, 17-19 years). Of those with a teen pregnancy, 60 037 (36.8%) ended in a birth (of which 59 485 [99.1%] were live births), and 106 135 (65.1%) ended in induced abortion. The median age at the end of follow-up was 25 years (IQR, 18-32 years) for those without a teen pregnancy and 31 years (IQR, 25-36 years) for those with a teen pregnancy. There were 6030 deaths (1.9 per 10 000 person-years [95% CI, 1.9-2.0 per 10 000 person-years]) among those without a teen pregnancy, 701 deaths (4.1 per 10 000 person-years [95% CI, 3.8-4.5 per 10 000 person-years]) among those with 1 teen pregnancy, and 345 deaths (6.1 per 10 000 person-years [95% CI, 5.5-6.8 per 10 000 person-years]) among those with 2 or more teen pregnancies; adjusted HRs (AHRs) were 1.51 (95% CI, 1.39-1.63) for those with 1 pregnancy and 2.14 (95% CI, 1.92-2.39) for those with 2 or more pregnancies. Comparing those with vs without a teen pregnancy, the AHR for premature death was 1.25 (95% CI, 1.12-1.40) from noninjury, 2.06 (95% CI, 1.75-2.43) from unintentional injury, and 2.02 (95% CI, 1.54-2.65) from intentional injury. Conclusions and Relevance In this population-based cohort study of 2.2 million female teenagers, teen pregnancy was associated with future premature mortality. It should be assessed whether supports for female teenagers who experience a pregnancy can enhance the prevention of subsequent premature mortality in young and middle adulthood.
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Affiliation(s)
- Joel G. Ray
- Department of Medicine, St Michael’s Hospital, University of Toronto, Toronto, Ontario, Canada
- Department of Obstetrics and Gynaecology, St Michael’s Hospital, University of Toronto, Toronto, Ontario, Canada
- ICES, Toronto, Ontario, Canada
- Child Health Evaluative Sciences, SickKids Research Institute, Toronto, Ontario, Canada
| | | | | | | | - Hilary K. Brown
- ICES, Toronto, Ontario, Canada
- Department of Health and Society, University of Toronto Scarborough, Scarborough, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Sonia M. Grandi
- ICES, Toronto, Ontario, Canada
- Child Health Evaluative Sciences, SickKids Research Institute, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Ashley Vandermorris
- Child Health Evaluative Sciences, SickKids Research Institute, Toronto, Ontario, Canada
- Division of Adolescent Medicine, Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
| | | | - Eyal Cohen
- ICES, Toronto, Ontario, Canada
- Child Health Evaluative Sciences, SickKids Research Institute, Toronto, Ontario, Canada
- Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
- Edwin S. H. Leong Centre for Healthy Children, University of Toronto, Toronto, Ontario, Canada
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Velez MP, Fell DB, Shellenberger JP, Kwong JC, Ray JG. Miscarriage after SARS-CoV-2 vaccination: A population-based cohort study. BJOG 2024; 131:415-422. [PMID: 37973606 DOI: 10.1111/1471-0528.17721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/23/2023] [Accepted: 10/31/2023] [Indexed: 11/19/2023]
Abstract
OBJECTIVE To evaluate the risk of miscarriage following SARS-CoV-2 vaccination, while accounting for the competing risk of induced abortion. DESIGN Population-based cohort study. SETTING Ontario, Canada. PARTICIPANTS Women aged 15-50 years with a confirmed pregnancy at ≤19 completed weeks' gestation. METHODS Exposure to first SARS-CoV-2 vaccination, handled in a time-varying manner, was defined as (i) unvaccinated, (ii) remotely vaccinated >28 days before the estimated conception date or (iii) recently vaccinated ≤28 days before conception and up to 120 days after conception. MAIN OUTCOME MEASURES The outcome was miscarriage, occurring between the estimated date of conception and up to 19 completed weeks of pregnancy. Fine-Grey hazard models, accounting for the competing risk of induced abortion, generated hazard ratios (aHR), adjusted for socio-demographic factors, comorbidities, and biweekly periods. RESULTS Included were 246 259 pregnant women, of whom 34% received a first SARS-CoV-2 vaccination. Miscarriage occurred at a rate of 3.6 per 10 000 person-days among remotely vaccinated women and 3.2 per 10 000 person-days among those recently vaccinated, in contrast to a rate of 1.9 per 10 000 person-days among unvaccinated women, with corresponding aHR of 0.98 (95% confidence interval [CI] 0.91-1.07) and 1.00 (95% CI 0.93-1.08). CONCLUSIONS SARS-CoV-2 vaccination was not associated with miscarriage while accounting for the competing risk of induced abortion. This study reiterates the importance of including pregnant women in new vaccine clinical trials and registries, and the rapid dissemination of vaccine safety data.
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Affiliation(s)
- Maria P Velez
- Department of Obstetrics and Gynaecology, Queen's University, Kingston, Ontario, Canada
- ICES, Toronto, Ontario, Canada
| | - Deshayne B Fell
- ICES, Toronto, Ontario, Canada
- Children's Hospital of Eastern Ontario (CHEO) Research Institute, Ottawa, Ontario, Canada
| | | | - Jeffrey C Kwong
- ICES, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
| | - Joel G Ray
- ICES, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
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Hwang CS, Kesselheim AS, Sarpatwari A, Huybrechts KF, Brill G, Rome BN. Changes in Induced Medical and Procedural Abortion Rates in a Commercially Insured Population, 2018 to 2022 : An Interrupted Time-Series Analysis. Ann Intern Med 2023; 176:1508-1515. [PMID: 37871317 DOI: 10.7326/m23-1609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2023] Open
Abstract
BACKGROUND During the COVID-19 pandemic, access to in-person care was limited, and regulations requiring in-person dispensing of mifepristone for medical abortions were relaxed. The effect of the pandemic and accompanying regulatory changes on abortion use is unknown. OBJECTIVE To estimate changes in the incidence rate of induced medical and procedural abortions. DESIGN Serial cross-sectional study with interrupted time-series analyses. SETTING Commercially insured persons in the United States. PARTICIPANTS Reproductive-aged women. INTERVENTION Onset of the COVID-19 pandemic in March 2020 and subsequent regulatory changes affecting the in-person dispensing requirement for mifepristone. MEASUREMENTS Monthly age-adjusted incidence rates of medical and procedural abortions were measured among women aged 15 to 44 years from January 2018 to June 2022. Medical abortions were classified as in-person or telehealth. Linear segmented time-series regression was used to calculate changes in abortion rates after March 2020. RESULTS In January 2018, the estimated age-adjusted monthly incidence rate of abortions was 151 per million women (95% CI, 142 to 161 per million women), with equal rates of medical and procedural abortions. After March 2020, there was an immediate 14% decrease in the monthly incidence rate of abortions (21 per million women [CI, 7 to 35 per million women]; P = 0.004), driven by a 31% decline in procedural abortions (22 per million women [CI, 16 to 28 per million women]; P < 0.001). Fewer than 4% of medical abortions each month were administered via telehealth. LIMITATION Only abortions reimbursed by commercial insurance were measured. CONCLUSION The incidence rate of procedural abortions declined during the COVID-19 pandemic, and this lower rate persisted after other elective procedures rebounded to prepandemic rates. Despite removal of the in-person dispensing requirement for mifepristone, the use of telehealth for insurance-covered medical abortions remained rare. Amid increasing state restrictions, commercial insurers have the opportunity to increase access to abortion care, particularly via telehealth. PRIMARY FUNDING SOURCE Health Resources and Services Administration.
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Affiliation(s)
- Catherine S Hwang
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (C.S.H., A.S.K., A.S., K.F.H., G.B., B.N.R.)
| | - Aaron S Kesselheim
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (C.S.H., A.S.K., A.S., K.F.H., G.B., B.N.R.)
| | - Ameet Sarpatwari
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (C.S.H., A.S.K., A.S., K.F.H., G.B., B.N.R.)
| | - Krista F Huybrechts
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (C.S.H., A.S.K., A.S., K.F.H., G.B., B.N.R.)
| | - Gregory Brill
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (C.S.H., A.S.K., A.S., K.F.H., G.B., B.N.R.)
| | - Benjamin N Rome
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (C.S.H., A.S.K., A.S., K.F.H., G.B., B.N.R.)
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