title: A sex difference in the platelet count.
abstract: A study of the platelet counts of 868 blood donors aged 18-65 showed a higher mean count in women than in men, the difference in the premenopausal age groups being highly significant (P less than 0.001) and of the order of 40-70 x 10(9)/1. The mean counts of women taking a contraceptive pill did not differ significantly from those who were not.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001772:Blood Cell Count; D001792:Blood Platelets; D003276:Contraceptives, Oral; D005260:Female; D006801:Humans; D008297:Male; D008593:Menopause; D008875:Middle Aged; D012723:Sex
chemical_list: D003276:Contraceptives, Oral