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Table 1 Demographic, lifestyle and clinical characteristics of subjects by insulin resistance

From: Elevated circulating irisin is associated with lower risk of insulin resistance: association and path analyses of obese Chinese adults

 

Insulin Resistance

Variables

No

Yes

P value

Demographics

 N (%)

448 (40.1 %)

667 (59.8 %)

 

Sex

  

0.765

 Female (n, %)

305 (39.8 %)

461 (60.2 %)

 

 Male (n, %)

143 (41.0 %)

206 (59.0 %)

 

Age (years)

52.8 ± 7.2

53.4 ± 7.2

0.191

Education categories, (n, %)

  

0.591

 Illiteracy

112 (37.1 %)

190 (62.9 %)

 

 Elementary school

138 (41.8 %)

192 (58.2 %)

 

 Middle school

101 (39.5 %)

155 (60.5 %)

 

 High school

58 (40.8 %)

84 (59.2 %)

 

 College or above

39 (45.9 %)

46 (54.1 %)

 

Life style habits

Ever smoking (n, %)

126 (42.7 %)

169 (57.3 %)

0.334

Ever drinking (n, %)

60 (46.2 %)

70 (53.8 %)

0.194

Regular physical exercise (n, %)

159 (44.0 %)

202 (56.0 %)

0.079

Adiposity measurements

BMI (kg/m2)

26.6 ± 2.4

28.1 ± 3.3

<0.001***

Waist circumference (cm)

91.9 ± 6.0

94.8 ± 7.5

<0.001***

Body fat (%)

33.3 ± 6.1

35.6 ± 7.0

<0.001***

Clinical characteristics

Systolic blood pressure (mmHg)

128.9 ± 16.8

137.4 ± 17.7

<0.001***

Diastolic blood pressure (mmHg)

77.1 ± 10.4

81.7 ± 10.8

<0.001***

Triglyceride (mmol/L)

1.52 ± 0.95

2.11 ± 1.41

<0.001***

Total cholesterol (mmol/L)

5.76 ± 1.00

5.94 ± 1.13

<0.001***

HDL-cholesterol (mmol/L)

1.43 ± 0.29

1.32 ± 0.29

<0.001***

LDL-cholesterol (mmol/L)

3.65 ± 0.93

3.66 ± 1.07

0.878

Fasting glucose (mmol/L)

5.52 ± 0.58

6.59 ± 2.11

<0.001***

2-h PG (OGTT) (mmol/L)

7.40 ± 2.28

10.16 ± 4.64

<0.001***

HbA1c

5.91 ± 0.48

6.40 ± 1.25

<0.001***

Fasting insulin (mU/L)

7.64 ± 1.92

16.15 ± 6.73

<0.001***

HOMA-IR (*10−6mol*U*L−2)

1.87 ± 0.48

4.67 ± 2.44

<0.001***

Irisin-log transformed (ng/ml)a

1.46 ± 2.05

1.19 ± 2.34

0.042*

  1. All percentages are row percentage; except for percentages, all values are mean ± SD
  2. Abbreviations: BMI body mass index, HDL high-density lipoprotein, HOMA homeostasis model assessment, IR insulin resistance index, LDL low-density lipoprotein cholesterol, OGTT oral glucose tolerance test, PG plasma glucose
  3. *p < 0.05, ***p < 0.001
  4. aIrisin was log-transformed to obtain better approximation of normal distribution