Skip to main content
. 2022 Feb 9;36(2):241–253. doi: 10.1007/s10534-022-00368-7

Table 2.

Demographic characteristics of the studied population and mean anthropometric values and whole-blood HbA1c and trace element concentrations before and 9 months after surgery

Characteristics Values
Age at recruitment (years ± SD) 45.6 ± 10.0
% Males (number) 29.2 (7/24)
Pre-surgery 9 months post-surgery p-value Significance
Weight (kg ± SD) 150.9 ± 34.9 106.4 ± 24.5 <0.0001 ****
BMI (kg/m2 ± SD) 51.2 ± 7.1 37.2 ± 5.5 <0.0001 ****
Waist circumference (cm ± SD) 143.4 ± 11.4 117 ± 12.2 <0.0001 ****
Hip circumference (cm ± SD) 135.8 ± 11.5 116 ± 10.9 <0.0001 ****
Waist-to-hip (ratio ± SD) 1.07 ± 0.08 1.01 ± 0.08 0.0008 ***
Neck circumference (cm ± SD) 45.6 ± 5.05 40.0 ± 4.5 <0.0001 ****

HbA1c mean

(% ± SD)

6.50 ± 1.28 5.51 ± 0.49 <0.0001 ****
% of individuals with Dysglycaemia (number) 54.2 (11/24) 8.3 (2/24) N/A N/A
% of individuals prescribed metformin (number) 29.2 (7/24) 8.3 (2/24) N/A N/A
% of individuals prescribed a statin (number) 25.0 (6/24) 20.8 (5/24) N/A N/A
Zinc conc. mean (µmol/L ± SD) 13.5 ± 3.5 16.9 ± 5.4 0.007 **
Copper conc. mean (µmol/L ± SD) 21.6 ± 3.9 19.9 ± 3.1 0.011 *

Magnesium conc. mean

(mmol/L ± SD)

0.76 ± 0.08 0.86 ± 0.09 0.0002 ****
Selenium conc. mean (µmol/L ± SD) 1.05 ± 0.17 1.09 ± 0.26 0.498 ns
Zinc/copper (ratio ± SD) 0.63 ± 0.14 0.86 ± 0.29 <0.0001 ****

Dysglycaemia was defined by a HbA1c concentration >6.0%. The p-values were calculated using paired T-test. Statistical significance is indicated as: ns, not significant (p>0.05), * for p≤0.05, ** for p≤0.01, *** for p≤0.001 and **** for p≤0.0001. N/A, not applicable