Women were grouped into four protein intake categories: less than 0.6 g/kg/day, 0.6 to less than 0.8 g/kg/day, 0.8 to less than 1.1 g/kg/day, and 1.1 g/kg/day or higher. This means the study does not identify an ideal protein target or prove that changing protein intake prevents SGA. The study also found no significant association between maternal protein intake and gestational diabetes, hypertensive disorders of pregnancy, or large-for-gestational-age births. Researchers note that protein intake varied across socioeconomic and demographic groups, with lower intake more common among women with lower income and education levels. Association Between Maternal Protein Intake and the Risk of Adverse Pregnancy Outcomes.