Gestational Diabetes in Older Pregnancies

This was a cohort study. All data of pregnant women aged 45 or older who were tested for GDM and did not have pre-gestational diabetes were extracted from the NVSS 2014–2019. The NVSS database provides data on births and deaths as well as maternal characteristics in 50 states, New York City, District of Columbia, and 5 territories (Puerto Rico, Virgin Islands, Guam, American Samoa, and Northern Mariana Islands) of the United States [22 (link)]. Participants were excluded according to the following criteria: (1) women with infections presenting or treated during this pregnancy; (2) women with missing information on gestational weeks, neonatal weight, and NICU admission records.