“…Chronic hypertensive disorders, diabetes, and asthma are risk factors for both PTB and LBW, independent of age (Azeez et al, 2019;Berry et al, 2018;Plows, Stanley, Baker, Reynolds, & Vickers, 2018). Recent population-based and multistate studies estimate that the rates of comorbidities like pregestational diabetes, gestational diabetes, hypertensive disorders, obesity, and asthma have increased among all age groups in the United States, and more pregnant women are presenting for delivery with one or multiple comorbidities (Azeez et al, 2019;Bardenheier et al, 2015;Bateman et al, 2012;Deputy, Dub, & Sharma, 2018;Fridman et al, 2014;Kim, Deputy, & Robbins, 2018). These trends suggest that the population of pregnant women may be increasingly less healthy, independent of shifts in maternal age structure (Fridman et al, 2014).…”