Data sources and measurements
Study data were prospectively collected from electronic medical records
(SAP® software) and managed using REDCap™ electronic data capture tools
hosted at [VHIR- VALL DE HEBRON HOSPITAL]
Regarding biometric variables, birth weight was measured in kg, and HC
and Lt were measured in cm. For birth weight percentiles, the curves
were adapted to Spanish populations by adjusting for sex and gestational
age. For HC and Lt percentiles, the Spanish curves were used.
Tobacco use was considered if the patient had smoked during the first
trimester of pregnancy according to the patient medical records. EPDS
variables were transformed to categorical, setting a cut-off value of
10.