Demographic and metabolic characteristics of the study samples.

<p>Data are shown as the mean±SD or n; FH: fasting hyperglycemia; LLI: long-lived individuals; MI_S: middle-aged controls (southern); MI_N: middle-aged (northern); HbA_1c: hemoglobin A_1c; HOMA-IR: homeostasis model assessment of insulin resistance; BMI: body mass index; SBP: systolic blood pressure; DBP: diastolic blood pressure; TC: total cholesterol; TG: triglyceride; HDL: high density lipoprotein; LDL: low density lipoprotein; NA: not available.</p><p>^a<i>p</i> values of post-hoc pair-wise comparisons of the parameters between LLI and MI_S.</p><p>^b<i>p</i> values of post-hoc pair-wise comparisons of the parameters between LLI and MI_N.</p><p>^c after log-transformed to normalize skewed distribution.</p><p>^d comparison of categorical variable based on Chi-square test.</p><p>Demographic and metabolic characteristics of the study samples.