. Author manuscript; available in PMC: 2006 Jun 27.

Published in final edited form as: Endocr Pract. 2006;12(2):137–144. doi: 10.4158/EP.12.2.137

Table 1.

Variables and Their Spearman Correlation With Serum Parathyroid Hormone^*

Variable	No. of patients^†	Mean	Median	SD	SpearmanR	Pvalue^‡
Parathyroid hormone (pg/mL)	497	37.3	35.5	13.4	…	…
Age (yr)	503	47.8	48.0	14.6	0.16	0.0005
Dietary calcium (mg/day)	464	659.0	598.0	307.8	−0.12	0.0135
Serum creatinine (mg/dL)	498	0.94	0.93	0.11	0.11	0.0128
Height (cm)	503	163.9	163.0	6.3	0.02	0.6972
Body mass index (kg/m²)	503	25.0	24.7	3.9	0.29	<0.0001
25-OHD (nmol/L)	492	51.5	44.9	33.8	−0.14	0.0024

25-OHD = 25-hydroxyvitamin D.

^†

Number for whom data were compiled for each specific variable.

^‡

Significance of the correlation.