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. 2015 Jan 24;26(5):1639–1646. doi: 10.1007/s00198-015-3040-2

Table 5.

Characteristics of the whole population according to C-peptide concentration tertiles—ANOVA

Variables I tertile II tertile III tertile p value
C-peptide range (ng/ml) 0.80–1.36 1.40–2.02 2.03–3.80
Age (years) 54 ± 7 53 ± 5 52 ± 5 0.69
BMI (kg/m2) 25.7 ± 5 22.9 ± 3 26.4 ± 5 0.02
LBMD T-score −1.28 ± 1 −1.10 ± 1 −0.43 ± 1

0.03

0.02a

LBMD Z-score −0.25 ± 1 −0.14 ± 1 0.51 ± 1 0.04
FBMD T-score −1.15 ± 1 −1.30 ± 1 −0.95 ± 1 0.50
FBMD Z-score −0.27 ± 0.9 −0.42 ± 1 −0.06 ± 1 0.43
Calcium (mg/dL) 9.4 ± 0.3 9.4 ± 0.4 9.3 ± 0.4 0.78
Phosphorus (mg/dL) 3.6 ± 0.4 3.5 ± 0.5 3.7 ± 0.3 0.35
Glucose (mg/dL) 88.2 ± 8 89.1 ± 9 96.3 ± 9 0.003
Insulin (μU/mL) 6.5 ± 3 7.1 ± 2 11.9 ± 4 <0.001
C-peptide (ng/mL) 1.3 ± 0.4 1.6 ± 0.3 2.5 ± 0.5 <0.001
HbA1c (%) 5.6 ± 0.2 5.6 ± 0.3 5.7 ± 0.3 0.69
PTH (pg/mL) 47.6 ± 18 45.8 ± 21 42.1 ± 18 0.54
25OH vit D (ng/mL) 25.1 ± 11 25.9 ± 9 27.9 ± 11 0.59
NTx (nM BCE/nM creatinine) 25.8 ± 8 27.5 ± 6 28.9 ± 7 0.37
FGF-23 (pg/mL) 10.6 ± 8 8.1 ± 4 9.3 ± 5 0.35

aLBMD: T-score, glucose, and BMI adjusted in the GLM