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. 2011 Mar 15;6(3):e17978. doi: 10.1371/journal.pone.0017978

Table 1. Clinical and biochemical subject characteristics with respect to type 2 diabetes mellitus.

No T2DM T2DM P value
Individuals (n) 1257 393 -
Age (years) 63.7±10.8 65.4±9.9 0.001
Male sex (%) 66.2 67.2 0.718
BMI (kg/m2) 27.1±4.1 29.1±4.8 <0.001
Hypertension (%) 52.1 58.0 0.041
Smoking (%) 57.0 65.6 0.002
Total cholesterol (mg/dl) 208±45 192±47 <0.001
LDL cholesterol (mg/dl) 132±38 118±38 <0.001
HDL cholesterol (mg/dl) 55±17 49±14 <0.001
Triglycerides (mg/dl) 142±90 171±112 <0.001
Use of statins (%) 43.4 54.7 <0.001
Insulin (µU/ml) 10.3±9.0 18.7±45.6 <0.001
Glucose (mmol/l) 5.4±0.7 8.4±2.7 <0.001
HOMA IR 2.6±2.8 6.3±6.9 <0.001
HOMA BCF 116±89 86±87 <0.001

Differences in categorical variables were tested for statistical significance with the Chi-square test. For continuous variables t-tests were applied. Non-normally distributed variables [i.e. age, BMI, HDL cholesterol, LDL cholesterol, triglycerides, fasting insulin, fasting glucose, homeostasis model assessment (HOMA) insulin resistance (IR), and HOMA beta cell function (BCF)] were log-transformed prior to statistical analysis. Continuous variables are given as mean ± SD (of non log-transformed values).