Sex-specific determinants of serum 25-hydroxyvitamin D3 concentrations in an elderly German cohort: a cross-sectional study

Table 2 Vitamin D status according to selected characteristics of the study population ^a)

	25-Hydroxyvitamin D ₃ [nmol/L]
	Median	P ₅, P ₉₅	P ^b)
Age < 76 years (n = 82)	65.6	33.8 – 89.9	0.109
Age ≥ 76 years (n = 80)	61.2	43.1 – 79.2	0.109
Body mass index < 25 kg/m² (n = 51)	67.3	45.0 – 89.4	0.015
Body mass index ≥ 25 kg/m² (n = 111)	60.7	38.5 – 84.3	0.015
Blood sampling in July/August (n = 102)	61.6	38.0 – 84.1	0.280
Blood sampling in September (n = 60)	66.0	44.5 – 90.0	0.280
Vitamin D supplement non users (n = 145)	62.9	39.7 – 87.2	0.239
Vitamin D supplement users (n = 17)	67.4	32.8 – .	0.239
Intact parathyroid hormone ≤ 6.9 pmol/L (n = 138)	64.2	45.3 – 88.5	0.001
Intact parathyroid hormone > 6.9 pmol/L^c) (n = 24)	51.7	30.3 – 78.2	0.001
eGFR < 60 mL/min/1.73 m² (n = 99)	61.4	39.6 – 87.3	0.297
eGFR ≥ 60 mL/min/1.73 m² (n = 63)	65.6	39.2 – 88.2	0.297
Never-smokers (n = 100)	64.0	39.6 – 88.8	0.162
Current or ex-smokers (n = 62)	61.7	39.3 – 86.6	0.162
Household income < 1500 €/month (n = 61)	56.9	39.6 – 84.3	0.038
Household income ≥ 1500 €/month (n = 101)	65.6	39.4 – 90.0	0.038
Osteoporosis diagnosis/current medication (n = 52)	64.3	39.9 – 91.7	0.346
No osteoporosis diagnosis/current medication (n = 110)	62.2	38.5 – 85.0	0.346

Abbreviations: eGFR, estimated glomerular filtration rate.
^a)Data are presented as median, 5th and 95th percentiles.
^b)Mann-Whitney U test for analysing group differences.
^c)Intact parathyroid hormone concentrations > 6.9 pmol/L indicate hyperparathyroidism.

ISSN: 1743-7075