Table 1

Characteristic of the cohort by vitamin D deficiency
25(OH) vitamin D level nmol/L
Characteristic Total (n = 10732) ≥ 50 (n = 7622) < 50 (n = 3110) p
Age (mean, [SE]) 48.2 [0.82] 46.8 [0.92] 51.3 [0.68] <0.001
Age group
25–44 (%, [SE]) 47.5 [2.48] 51.3 [2.80] 39.0 [1.94]
45–64 (%, [SE]) 33.9 [1.85] 32.1 [2.11] 37.8 [1.61]
≥65 (%, [SE]) 18.6 [1.80] 16.6 [1.93] 23.2 [1.85] <0.001
Female (% [SE]) 49.9 [0.57] 44.0 [0.70] 63.8 [1.71] <0.001
Europid (% [SE]) 87.3 [2.74] 92.1 [1.76] 76.6 [4.48] <0.001
Diabetes (% [SE]) 7.0 [0.66] 5.1 [0.49] 11.1 [1.04] <0.001
Hypertension (% [SE]) 22.5 [1.45] 20.0 [1.74] 28.0 [0.97] <0.001
Smoking (% [SE]) 16.4 [1.77] 16.4 [1.72] 16.4 [2.72] 0.98
Current
History of CVD (% [SE]) 6.1 [0.57] 5.1 [0.52] 8.2 [0.80] <0.001
Season (% [SE])
summer (Dec –Feb) 12.8 [6.72] 16.3 [8.27] 4.9 [2.72] <0.001
autumn (Mar –May) 14.2 [5.10] 13.3 [4.81] 16.2 [6.04]
winter (Jun –Aug) 26.7 [5.56] 23.3 [5.22] 34.3 [7.31]
spring (Sep –Nov) 46.3 [7.07] 47.1 [7.86] 44.7 [6.56]
BMI (% [SE])
25–29.9 39.2 [0.56] 40.7 [0.78] 36.1 [1.28] <0.001
≥ 30 20.3 [1.05] 17.3 [1.17] 27.0 [1.60]
Total cholesterol (mean [SE]) 5.54 [0.03] 5.43 [0.03] 5.79 [0.03] <0.001
Location (%, [SE]) Urban 57.0 [10.5] 53.8 [10.7] 64.1 [11.0] 0.11
Albuminuria (%, [SE]) 6.9 [0.60] 5.4 [0.52] 10.5 [1.05] <0.001
eGFR < 60 (%, [SE]) 2.7 [0.28] 2.3 [0.30] 3.5 [0.47] 0.03

SE – standard error, CVD - cardiovascular disease, BMI – body mass index, eGFR – estimated glomerular filtration rate.

Damasiewicz et al.

Damasiewicz et al. BMC Nephrology 2012 13:55   doi:10.1186/1471-2369-13-55

Open Data