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Table 3 Anthropometric, biochemical markers of bone turnover and related variables of subjects according to serum 25(OH)D concentrations divided into 4 equal quartiles [mean (SD)]

From: Vitamin D deficiency associations with metabolic, bone turnover and adverse general health markers in community free living adults

Variable 1st quartile
25(OH)D
≤15 ng/ml
2nd quartile 25(OH)D
=15.1–21.9 ng/ml
3nd quartile 25(OH)D
=22–30 ng/ml
4th quartile 25(OH)D
> 31.1 ng/ml
P value
Weight (Kg) 77.26 (17) 79.51 (18) 78.50 (17) 79.67 (17) 0.622
BMI 28.93 (5) 28.98 (5) 28.07 (4) 28.31 (5) 0.423
SBP (mmHg) 121.83 (16) 125.62 (18) 124.27 (15) 124.67 (13) 0.397
DBP (mmHg) 74.67 (8) 75.78 (7) 77.34 (8) 77.06 (7) 0.089
HbA1C (%) 5.72 (0.9) 5.84 (1) 5.60 (0.7) 5.72 (1) 0.196
Glucose (mmol/L) 6.14 (2) 6.48 (3) 6.02 (1) 6.00 (2) 0.321
Hs CRP (mg/L) 3.97 (4) 3.38 (3) 3.33 (3) 3.10 (2) 0.198
Cholesterol (mmol/L) 4.79 (0.9) 4.88 (0.9) 4.88 (0.9) 4.75 (0.9) 0.541
HDL (mmol/L) 1.32 (0.9) 1.23 (0.4) 1.27 (0.3) 1.25 (0.3) 0.494
LDL (mmol/L) 3.22 (0.9) 3.31 (0.8) 3.26 (0.8) 3.11 (0.8) 0.239
Triglycerides (mmol/L) 1.27 (0.8) 1.48 (1) 1.44 (1) 1.36 (1) 0.249
Calcium (mmol/L) 2.28 (0.1) 2.29 (0.1) 2.28 (0.1) 2.28 (0.1) 0.881
Phosphate (mmol/L) 1.17 (0.2) 1.19 (0.1) 1.21 (0.1) 1.18 (0.1) 0.369
Osteocalcin (ng/ml) 17.92 (6) 18.10 (7) 17.45 (7) 18.66 (11) 0.666
PTH (pg/ml) 28.70 (18) 30.62 (18) 27.73 (15) 32.10 (43) 0.446
P1NP (ng/ml) 50.10 (23) 49.90 (22) 46.75 (21) 50.98 (53) 0.682
CTX1 (ng/ml) * 11.58 (8) 9.12 (5) 12.45 (7) 10.41 (6) 0.034*
U-DPD (nmol/L) 101.53 (45) 89.08 (47) 88.53 (43) 97.39 (50) 0.526
U-PYD (nmol/L) 232.94 (88) 234.62 (89) 221.59 (103) 227.71 (100) 0.914
PYD/Cr (nmol/mmol) 24.43 (10) 24.55 (12) 22.94 (11) 23.76 (12) 0.910
DPD/Cr (nmol/mmol) 11.05 (5) 9.39 (5) 9.44 (5) 10.50 (6) 0.534
  1. *P < 0.05