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Table 1 Baseline characteristics of 1060 participants with type 2 diabetes according to the body mass index categories

From: Associations between obesity, weight change and decreased renal function in Korean type 2 diabetic patients: a longitudinal follow-up study

Characteristic

BMI < 23

(n = 320, 30.2%)

23 ≤ BMI < 25

(n = 255, 24.1%)

BMI ≥ 25

(n = 485, 45.8%)

p

Age (year)

56.3 ± 8.4

56.7 ± 8.5

54.1 ± 8.7

0.002

Sex (%)

   

0.003

 Men

44.6

53.0

42.3

 

 Women

55.4

47.0

57.7

 

BMI (kg/m2)

21.5 ± 1.3

24.1 ± 1.3

29.4 ± 2.7

< 0.001

Duration of type 2 diabetes (year)

6.5 ± 5.3

5.0 ± 4.5

5.5 ± 5.4

NS

HbA1c (%)

7.4 ± 1.5

7.3 ± 1.7

8.3 ± 1.7

0.005

Fasting glucose (mg/dL)

133.6 ± 33.1

175.1 ± 57.3

180.3 ± 47.3

< 0.001

AST (U/L)

35.6 ± 9.6

36.3 ± 11.2

36.8 ± 10.3

NS

ALT (U/L)

39.6 ± 10.4

41.9 ± 14.7

45.8 ± 1.7

0.002

Total-cholesterol (mg/dL)

160.9 ± 32.5

186.2 ± 43.8

192.0 ± 48.7

0.002

LDL-cholesterol (mg/dL)

93.3 ± 27.4

102.3 ± 40.7

106 ± 50.7

0.001

HDL-cholesterol (mg/dL)

43.3 ± 10.6

46.5 ± 16.1

42.5 ± 16.1

NS

Triglycerides (mg/dL)

155.7 ± 67.6

177.9 ± 131.3

197.9 ± 141.3

0.001

Hypertension (%)

61.5

68.0

71.0

0.040

eGFR (mL/min/1.73 m2)a

75.2 ± 11.1

74.6 ± 13.9

70.5 ± 13.0

0.002

Albuminuria (%)

31.6

29.0

30.5

NS

  1. The data is presented as mean ± standard deviation
  2. BMI body mass index, HbA1c glycated hemoglobin, AST aspartate aminotransaminase, ALT alanine aminotransferase, LDL low-density lipoprotein, HDL high-density lipoprotein, eGFR estimated glomerular filtration rate, NS not significant
  3. aCalculation of eGFR based upon the Modification of Diet in Renal Disease formula: eGFR (mL/min/1.73 m2) = 186 × serum creatinine (mg/dL) - 1.154 × (age) - 0.203 × (0.742 if female) × (1.21 if black)