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Table 2 Comparison of variables using different vitamin d cut-off values (t-test)

From: Vitamin D status among patients visiting a tertiary care center in Riyadh, Saudi Arabia: a retrospective review of 3475 cases

Parameters 25 (OH) vitamin D cut-offs (nmol/L)
  < 25 ≥ 25 < 50 ≥ 50 < 75 ≥ 75
N 1601 1874 2672 803 3110 365
Age (years) 43.5 ± 16.3 49.9 ± 15.8** 45.7 ± 16.3 51.0 ± 15.8** 46.6 ± 16.3 49.8 ± 15.8**
BMI (kg/ m2) 35.1 ± 12.6 37.9 ± 14.8** 37.1 ± 14.9 33.8 ± 11.5** 37.0 ± 14.0 30.3 ± 7.7**
Systolic blood pressure (mmHg) 120.0 ± 19.0 124.0 ± 19.0** 122.0 ± 19.0 123.0 ± 17.0 122.0 ± 19.0 121.0 ± 16.0
Diastolic blood pressure (mmHg) 70.0 ± 11.0 72.0 ± 11.0** 71.0 ± 11.0 71.0 ± 11.0 71.0 ± 11.0 70.0 ± 10.0
Glucose (mmol/L) 6.2 ± 2.6 6.5 ± 3.4** 6.4 ± 2.9 6.4 ± 3.4 6.4 ± 3.0 6.6 ± 2.8
HbA1c (%) 6.9 ± 1.8 7.1 ± 1.9 7.1 ± 1.9 6.9 ± 1.8 7.0 ± 1.9 6.8 ± 1.9
Albumin (g/L) 45.6 ± 5.1 46.3 ± 4.5** 45.7 ± 5.0 46.9 ± 3.9** 45.9 ± 4.9 46.9 ± 4.0**
Alkaline phosphatase (U/L) 106.0 ± 103.0 90.0 ± 60.0** 100.0 ± 88.0 88.0 ± 69.0** 98.0 ± 85.0 91.0 ± 58.0
BUN (mmol/L) 4.9 ± 3.5 5.3 ± 3.3** 5.0 ± 3.5 5.2 ± 2.8 5.1 ± 3.5 5.0 ± 2.2
Calcium (mmol/L) 2.3 ± 0.2 2.4 ± 0.2** 2.3 ± 0.2 2.4 ± 0.1** 2.33 ± 0.15 2.37 ± 0.15**
Creatinine (umol/L) 77.0 ± 65.0 82.0 ± 74.0 80.0 ± 75.0 77.0 ± 53.0 80.0 ± 74.0 73.0 ± 21.0
Phosphorus (mmol/L) 1.11 ± 0.24 1.16 ± 0.22** 1.13 ± 0.24 1.15 ± 0.21 1.13 ± 0.23 1.15 ± 0.22
PTH (pmol/L) 38.0 ± 67.0 31.0 ± 51.0 36.0 ± 62.0 28.0 ± 48.0** 36.0 ± 61.0 25.0 ± 35.0*
  1. Note: Data presented as mean ± standard deviation; *denotes significance at < 0.05 level; **denotes significance at < 0.01 level.