Changes after 1 year between the control group and the intervention group.

BMI  =  Body mass index, HbA1c  =  haemoglobin A1c, HDL  =  high-density lipoprotein, LDL  =  low-density lipoprotein, N/A  =  not applicable, 95%CI  = 95% confidence interval, HOMA-IR  =  homeostasis model assessment- insulin resistance.
Data in parentheses are standard deviations following means.
aAny weight loss  =  weight loss >1 kg; weight gain  =  weight gain >1 kg.
bThe differences with corresponding 95%CI's in changes over time between control group and intervention group were determined with independent sample t-tests for continuous measures and chi-square tests for categorical measures.
cP<0.05 for differences between baseline and follow-up measurements of metabolic characteristics determined with paired t-tests.
dHOMA-IR was calculated as (fasting plasma glucose * fasting plasma insulin)/22.5 [26].