Study design
This was a prospective secondary analysis of a cohort with pregnant women recruited for the research study “Psychological impact and social support in pregnant women during the lockdown due to the SARS-CoV2 pandemic”. In the present analysis, we included pregnant women that attended Hospital de la Dona Vall d’Hebron during the COVID-19 lockdown in Barcelona, Spain, which lasted from 14th March 2020 to 28th Abril 2020. As expected during a strict pandemic lockdown, these women were exposed to an increased number of anxiety-triggering circumstances. Psychosocial factors, maternal demographics, and obstetric outcomes were analyzed as potential predictors of low birth weight.