The subjects of this study included 616 patientswho were first diagnosed with diabetes during a routine physical examination. This sample was obtained from a total of 28,075 adultsaged 19 years and older who received the examination among 33,829 participants in the Korea National Health & Nutrition Examination Survey (KNHANES) from 2007–2010. The subjects were categorized by age into young age (age 19 – 39 years), middle age (age 40 – 59 years), and old age (age 60 years and older). The degree of obesity was categorized according to body mass index (BMI) into normal weight (BMI 18.5 ~ 22.9), overweight (BMI 23 ~ 24.9), and obesity (BMI 25 or above). Insulin resistance was evaluated by homeostatic model assessment of insulin resistance (HOMA-IR).
RESULTS:
It was found that 14.1% (n = 87) of a total of 616 subjects (324 men, 292 women) were in the young age group, 43.8% (n = 270) were in the middle age group, and 42.1% (n = 259) were in the old age group. In addition, 83.3% of men that were overweight or obesity were in the young age group, while 79.2% and 60.5% were in the middle age and old age groups, respectively. A total of 82.2% of women that were overweight or obesity were in the young age group, while 79.5% and 77% were in the middle age and old age groups, respectively. For men, the more obesity they were in all age groups, the higher their HOMA-IR. For women, the more obesity they were in the young age and middle age groups, the higher their HOMA-IR; however, women in the old age group showed the highest HOMA-IR when they were of normal weight.