Diabetes mellitus, maternal adiposity, and insulin-dependent gestational diabetes are associated with COVID-19 in pregnancy: the INTERCOVID study.
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Eskenazi Brenda, Rauch Stephen, Iurlaro Enrico, Gunier Robert B, Rego Albertina, Gravett Michael G, Cavoretto Paolo Ivo, Deruelle Philippe, García-May Perla K, Mhatre Mohak, Usman Mustapha Ado, Elbahnasawy Mohamed, Etuk Saturday, Napolitano Raffaele, Deantoni Sonia, Liu Becky, Prefumo Federico, Savasi Valeria, Marques Patrícia F, Baafi Eric, Zainab Ghulam, Nieto Ricardo, Serrano Berta, Aminu Muhammad Baffah, Cardona-Perez Jorge Arturo, Craik Rachel, Winsey Adele, Tavchioska Gabriela, Bako Babagana, Oros Daniel, Benski Caroline, Galadanci Hadiza, Savorani Mónica, Oberto Manuela, Sentilhes Loïc, Risso Milagros, Takahashi Ken, Vecciarelli Carmen, Ikenoue Satoru, Pandey Anil K, Soto Conti Constanza P, Cetin Irene, Nachinab Vincent Bizor, Ernawati Ernawati, Duro Eduardo A, Kholin Alexey, Firlit Michelle L, Easter Sarah Rae, Sichitiu Joanna, John-Akinola Yetunde, Casale Roberto, Cena Hellas, Agyeman-Duah Josephine, Roggero Paola, Langer Ana, Bhutta Zulfiqar A, Kennedy Stephen H, Villar Jose, Papageorghiou Aris T
Аннотация
OBJECTIVE: This study aimed to determine whether diabetes mellitus and high body mass index are risk factors for COVID-19 in pregnancy and whether gestational diabetes mellitus is associated with COVID-19 diagnosis.
STUDY DESIGN: INTERCOVID was a multinational study conducted between March 2020 and February 2021 in 43 institutions from 18 countries, enrolling 2184 pregnant women aged ≥18 years; a total of 2071 women were included in the analyses. For each woman diagnosed with COVID-19, 2 nondiagnosed women delivering or initiating antenatal care at the same institution were also enrolled. The main exposures were preexisting diabetes mellitus, high body mass index (overweight or obesity was defined as a body mass index ≥25 kg/m2), and gestational diabetes mellitus in pregnancy. The main outcome was a confirmed diagnosis of COVID-19 based on a real-time polymerase chain reaction test, antigen test, antibody test, radiological pulmonary findings, or ≥2 predefined COVID-19 symptoms at any time during pregnancy or delivery. Relationships of exposures and COVID-19 diagnosis were assessed using generalized linear models with a Poisson distribution and log link function, with robust standard errors to account for model misspecification. Furthermore, we conducted sensitivity analyses: (1) restricted to those with a real-time polymerase chain reaction test or an antigen test in the last week of pregnancy, (2) restricted to those with a real-time polymerase chain reaction test or an antigen test during the entire pregnancy, (3) generating values for missing data using multiple imputation, and (4) analyses controlling for month of enrollment. In addition, among women who were diagnosed with COVID-19, we examined whether having gestational diabetes mellitus, diabetes mellitus, or high body mass index increased the risk of having symptomatic vs asymptomatic COVID-19.
RESULTS: COVID-19 was associated with preexisting diabetes mellitus (risk ratio, 1.94; 95% confidence interval, 1.55-2.42), overweight or obesity (risk ratio, 1.20; 95% confidence interval, 1.06-1.37), and gestational diabetes mellitus (risk ratio, 1.21; 95% confidence interval, 0.99-1.46). The gestational diabetes mellitus association was specifically among women requiring insulin, whether they were of normal weight (risk ratio, 1.79; 95% confidence interval, 1.06-3.01) or overweight or obese (risk ratio, 1.77; 95% confidence interval, 1.28-2.45). A somewhat stronger association with COVID-19 diagnosis was observed among women with preexisting diabetes mellitus, whether they were of normal weight (risk ratio, 1.93; 95% confidence interval, 1.18-3.17) or overweight or obese (risk ratio, 2.32; 95% confidence interval, 1.82-2.97). When the sample was restricted to those with a real-time polymerase chain reaction test or an antigen test in the week before delivery or during the entire pregnancy, including missing variables using imputation or controlling for month of enrollment, the observed associations were comparable.
CONCLUSION: Diabetes mellitus and overweight or obesity were risk factors for COVID-19 diagnosis in pregnancy, and insulin-dependent gestational diabetes mellitus was associated with the disease. Therefore, it is essential that women with these comorbidities are vaccinated.