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Table 1 Participant characteristics by incident type 2 diabetes status

From: Associations of leptin and adiponectin with incident type 2 diabetes and interactions among African Americans: the Jackson heart study

Characteristic

n

Incident type 2 diabetes

P-value*

Yes (n = 584)

No (n = 2779)

Sex, n (%)

   

0.82

 Male

1230

216 (37.0%)

1014 (36.5%)

 

 Female

2133

368 (63.0%)

1765 (63.5%)

 

 Total

3363

584

2779

 

Education Level, n (%)

   

<.01

 Less than high school

459

102 (17.5%)

357 (12.9%)

 

 High school graduate

645

121 (20.8%)

524 (18.9%)

 

 Some college

1002

174 (29.9%)

828 (29.8%)

 

 Bachelor’s degree or higher

1250

185 (31.8%)

1065 (38.4%)

 

 Total

3356

582

2774

 

Smoking Status, n (%)

   

0.07

 Never

2368

388 (67.6%)

1980 (71.7%)

 

 Former

569

116 (20.2%)

453 (16.4%)

 

 Current

397

70 (12.2%)

327 (11.8%)

 

 Total

3334

574

2760

 

Alcohol Consumption, n (%)

   

0.20

 Abstaining

1678

316 (55.1%)

1362 (50.4%)

 

  < 1 drink/week

858

147 (25.7%)

711 (26.3%)

 

 1–7 drinks/week

519

78 (14.0%)

441 (16.8%)

 

 8–14 drinks/week

126

17 (3.0%)

109 (4.0%)

 

  > 14 drinks/week

96

15 (2.6%)

81 (3.0%)

 

 Total

3277

573

2704

 

Anti-hypertensive Medication, n (%)

   

<.0001

 Yes

1404

326 (59.9%)

1078 (41.2%)

 

 No

1756

218 (40.1%)

1538 (58.8%)

 

 Total

3160

544

2616

 

Anti-hypertriglyceridemic Medication, n (%)

   

0.30

 Yes

6

2 (0.4%)

4 (0.2%)

 

 No

3081

531 (99.6%)

2550 (99.8%)

 

 Total

3087

533

2554

 

Anti-hyperlipidemic Medication, n (%)

   

< 0.01

 Yes

275

66 (12.4%)

209 (8.2%)

 

 No

2812

467 (87.6%)

2345 (91.8%)

 

 Total

3087

533

2554

 

Age (years), mean ± se

3363

54.7 ± 0.5

52.5 ± 0.2

<.0001†

Physical activity score, mean ± se

3183

8.4 ± 0.1

8.8 ± 0.05

<.001

Systolic blood pressure (mmHg), mean ± se

3354

128.0 ± 0.7

124.4 ± 0.3

<.0001

BMI (kg/m2), mean ± se

3360

33.6 ± 0.3

30.7 ± 0.1

<.0001

Waist (cm), mean ± se

3360

104.9 ± 0.6

97.3 ± 0.3

<.0001†

 Male

1228

104.9 ± 0.9

98.4 ± 0.5

 

 Female

2132

104.9 ± 0.8

96.6 ± 0.4

 

LDL-Cholesterol (mg/dL), mean ± se

3326

128.8 ± 1.6

127.0 ± 0.7

0.29

HDL-Cholesterol (mg/dL), mean ± se

3339

49.2 ± 0.5

52.8 ± 0.3

<.0001†

 Male

1226

44.0 ± 0.7

47.0 ± 0.4

 

 Female

2113

52.3 ± 0.7

56.1 ± 0.3

 

Total Cholesterol (mg/dL), mean ± se

3339

200.9 ± 1.7

198.7 ± 0.7

0.24†

Triglyceride (mg/dL), mean ± se

3339

114.3 ± 2.5

95.2 ± 1.0

<.0001†

Lipoprotein(a), mean ± se

3256

58.0 ± 2.0

58.4 ± 0.8

0.83

HOMA-IR, mean ± se

3210

4.9 ± 0.1

3.3 ± 0.04

<.0001†

Fasting insulin (ug/mL), mean ± se

3343

20.8 ± 0.5

14.7 ± 0.2

<.0001†

Fasting Glucose (mg/dL), mean ± se

3238

97.1 ± 0.4

88.9 ± 0.2

<.0001†

HbA1c, mean ± se

3286

5.9 ± 0.0

5.4 ± 0.01

<.0001†

Circulating Plasma leptin (ng/mL), mean ± se

3319

32.1 ± 1.1

26.0 ± 0.4

<.0001†

 Male

1219

13.3 ± 0.7

9.8 ± 0.3

 

 Female

2100

43.4 ± 1.5

35.4 ± 0.5

 

Circulating Plasma leptin, n (%)‡

   

<.0001

 Quartile 1

804

75 (13.0%)

729 (26.6%)

 

 Quartile 2

835

136 (23.5%)

699 (25.5%)

 

 Quartile 3

839

149 (25.7%)

690 (25.2%)

 

 Quartile 4

841

219 (37.8%)

622 (22.7%)

 

 Total

3319

579

2740

 

Circulating Plasma Adiponectin (ng/mL), mean ± se

3299

4091.9 ± 115.1

5566.3 ± 77.2

<.0001†

Male

1215

3202.9 ± 148.6

4061.0 ± 94.6

 

Female

2084

4624.8 ± 154.5

6438.7 ± 103.3

 

Circulating Plasma Adiponectin, n (%)§

   

<.0001

 Quartile 1

849

221 (38.7%)

628 (23.0%)

 

 Quartile 2

840

161 (28.2%)

679 (24.9%)

 

 Quartile 3

831

118 (20.7%)

713 (26.1%)

 

 Quartile 4

779

71 (12.4%)

708 (26.0%)

 

 Total

3299

571

2728

 
  1. *T-tests were used for continuous variables and Chi-square tests for categorical variables
  2. †Satterthwaite test for unequal variances
  3. ‡For men the sex-specific leptin quartiles were defined as < 4.5 ng/mL (Q1), ≥4.5 to < 7.8 ng/mL (Q2), ≥7.8 to < 13.3 ng/mL (Q3), ≥13.3 ng/mL (Q4). For women, the leptin quartiles were defined as < 21.85 ng/mL (Q1), ≥21.85 to < 32.9 ng/mL (Q2), ≥32.9 to < 46.3 ng/mL (Q3), ≥46.3 ng/mL (Q4)
  4. §For men the sex-specific adiponectin quartiles were defined as < 2066.200 ng/mL (Q1), ≥2066.200 to < 3118.041 ng/mL (Q2), ≥3118.041 to < 4892.741 ng/mL (Q3), ≥4892.741 ng/mL (Q4). For women the adiponectin quartiles were defined as < 3327.154 ng/mL (Q1), ≥3327.154 to < 5080.525 ng/mL (Q2), ≥5080.525 to < 7606.885 ng/mL (Q3), ≥7606.885 ng/mL (Q4)