Table 1.

Demographic, PHPT, and Lifestyle Characteristics by Vitamin D Status

	25OHD, ng/mL			P Value
	<20	20–29	≥30
n	19	35	46
Age, y	56.6 ± 2.7	58.5 ± 2.0	66.8 ± 1.7a,b	.0009
Females, n/%	14/17.7	25/31.7	40/50.6	.19
Postmenopausal women, n/%	10/71.4	20/80.0	40/100	<.01
Age at menopause, y	47.6 ± 2.2	49.0 ± 1.5	50.9 ± 1.1	.33
Height, cm	166.4 ± 2.0	165.9 ± 1.5	162.6 ± 1.3	.17
Weight, kg	83.3 ± 4.4	79.2 ± 3.2	71.1 ± 2.8c	.04
BMI, kg/m2	29.5 ± 1.4	28.7 ± 1.0	26.8 ± 0.9	.16
White, n/%	14/87.5	30/85.7	42/93.3	.58
Hispanic, n/%	5/26.3	5/14.3	7/15.2	.48
PHPT duration, y	3.0 ± 1.4	3.6 ± 1.0	5.2 ± 0.9	.30
Meets surgical guidelines, n/%	16/84.2	20/57.1	33/71.7	.10
Calcium intake, mg/d	867 ± 185	1033 ± 139	1197 ± 119	.31
Taking vitamin D supplements, n/%	5/26.3	21/60.0	39/84.8	<.0001
Daily supplement use, IU/d	711 ± 631	1056 ± 308	2059 ± 226c,d	.01
Current tobacco use, n/%	1/5.3	1/2.9	4/8.7	.83
Sun exposure score	8.3 ± 1.4	8.5 ± 1.0	9.1 ± 0.9	.84

Data are expressed as means ± SEM, unless stated otherwise.

^aP < .01 compared to 25OHD <20 ng/mL.

^bP < .01 compared to 25OHD 20–29 ng/mL.

^cP < .05 compared to 25OHD <20 ng/mL.

^dP < .05 compared to 25OHD 20–29 ng/mL.