Table 1

Demographic parameters of antiphospholipid syndrome (APS) patients according to type of disease and vitamin D levels

Parameter	Type of disease	Serum vitamin D <15 ng/ml	Serum vitamin D ≥15 ng/ml	p Value
Age	pAPS	16±50	14±47	NS
Age	sAPS	15±56	13±43	0.001
Age at diagnosis	pAPS	46±14	43±12	NS
Age at diagnosis	sAPS	48±15	35±11	<0.001
Female sex	pAPS	68%	77%	NS
Female sex	sAPS	92%	89%	NS

APS, antiphospholipid syndrome; NS, not significant (p>0.05); pAPS, primary APS; sAPS, secondary APS.