Vitamin D Deficiency and the Presentation of Primary Hyperparathyroidism: A Mini Review

Table 1

NPHPT with 25(OH)D levels: age (yo) is expressed as the range or mean ± SD years old; n = PHPT patients; N = survey subjects; prevalence is expressed as % = n/N; 25(OH)D cutoff: diagnostic criteria of vitamin D deficiency in the study = expressed as range or mean ± SD ng/dl.

Authors	Age (yo)	n/N Prevalence	% Female	25(OH)D cutoff (ng/mL)	Study population
Lowe et al. [30]	32–78	37/?	95	25D > 20	Referral center USA
				20–54
Cusano et al. [33]	70 ± 6	9/2364	0	25D > 20	Community based USA
		0.38%		25.2 ± 5
Chen et al. [34]	60 ± 18.5	11/940	46	25D > 20	Referral center China
		1.12%		26.5 ± 6
Wang et al. [35]	59.9 ± 5.4	10/940	90	25D > 30	Community based USA
		1.11%		31.9 ± 1.7
Schini et al. [36]	57–88	11/6280	91	25D > 20	Metabolic bone center UK
		0.18%