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Table 1 Comparison of demographic and cardiometabolic risk factor between the tertiles of response to vitamin D categories

From: Association between Cardiometabolic risk factor and responsiveness to vitamin D supplementation: a new approach using artificial neural network analysis

Variables   Response to treatment P value
1st Tertile
(n = 193)
≤20.80 ng/mL
2nd Tertile
(n = 212)
20.81–34.58 ng/mL
3rd Tertile (n = 203)
> 34.58 ng/mL
Basal 25(OH) D (ng/mL) 13.7 ± 12.7 7.7 ± 5.7 7.37 ± 4. 8 < 0.001
Age (year)   14.9 ± 1.5 14.5 ± 1.5 14. 6 ± 1.5 0.01
Physical activity (MET/h) 45.8 ± 4.0 44.9 ± 2.8 45.5 ± 3.8 0.07
BMI (kg/m2)   21.4 ± 3.9 21.2 ± 4.3 20.5 ± 3.7 0.11
Use of sun protective cream Yes 84 (31.8) 93 (35.2) 87 (33.0) 0.98
No 109 (31.7) 119 (34.6) 116 (33.7)
Passive smoking exposure Yes 125 (31.1) 139 (34.6) 138 (34.3) 0.78
No 68 (33.0) 73 (35.4) 65 (31.6)
Heart rate   83.5 ± 13.4 82.5 ± 12. 7 83.7 ± 12.9 0.60
SBP (mm Hg)   96.9 ± 14.7 96.7 ± 15.8 95.7 ± 13.5 0.65
DBP (mm Hg)   62.9 ± 14.8 61.2 ± 13.5 63.1 ± 11.4 0.14
NC (cm)   31.1 ± 2.4 31.40 ± 2.3 30.9 ± 2.1 0.10
WHR   0.76 ± 0.06 0.78 ± 0.06 0.76 ± 0.06 0.005
Wrist circumference (cm)   15.1 ± 1.16 15.2 ± 1.05 15.1 ± 1.01 0.31
HC (cm)   92.4 ± 8.70 91.1 ± 9.14 90.8 ± 8.7 0.15
WC (cm)   70.5 ± 8.58 70.7 ± 9.02 68.9 ± 8.3 0.04
  1. Data presented as mean ± SD or number (%). P-value is obtained by Kruskal Wallis Test (non-normally distributed variables) or Chi-square test (categorical variables). Significant of bold value are< 0.05 levels. Abbreviation: SBP systolic blood pressure, DBP diastolic blood pressure, NC neck circumference, WHR waist-to-hip ratio, WC waist circumference, HC hip circumference