. Author manuscript; available in PMC: 2010 Jul 1.

Published in final edited form as: Am J Hematol. 2009 Jul;84(7):397–400. doi: 10.1002/ajh.21412

Table I. Characteristics of study population.

	Vitamin D Deficient N = 35 N(%) - nominal mean(95% CI) - continuous	Non-Vitamin D Deficient N = 113 N(%) mean(95% CI) - continuous	P value
Age, years	60.3 (56.6 – 63.9)	63.0 (61.3 – 64.7)	0.14
Gender
Male	23 (25)	69 (75)	0.62
Female	12 (21)	44 (79)	0.62
Race/Ethnicity
Caucasian non-Hispanic	30 (22)	109 (78)
African American	2 (40)	3 (60)	0.01
Hispanic	0 (0)	1 (100)
Asian	3 (100)	0 (0)
BMI, kg/m²	28.9 (26.4 -31.3)	27.8 (26.7 - 28.9)	0.38
Season of diagnosis
Spring	9 (24)	28 (76)
Summer	8 (17)	39 (83)	0.58
Winter	9 (26)	25 (74)
Autumn	9 (30)	21 (70)

Vitamin D status: Deficiency is defined as 25(OH)D < 20 ng/mL.