“Maternal and Paternal Age, Oral Contraceptive Use, and Down Syndrome Risk in Moroccan Households with Higher Education and Employment Levels, Lower Smoking and Alcohol Consumption Rates”

https://pubmed.ncbi.nlm.nih.gov/38117028

This study found that maternal and paternal age at birth and oral contraceptive use were associated with Down Syndrome risk in Moroccan households, and that the sample population had higher education and employment levels, as well as lower smoking and alcohol consumption rates, compared to the general Moroccan population.