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Table 2 Demographic characteristics stratified by FFAs quartiles (mmol/L)

From: Free fatty acids and cardiovascular outcome: a Chinese cohort study on stable coronary artery disease

Variables

Quartile 1

(≤0.30)

(n = 403)

Quartile 2

(0.31–0.40)

(n = 364)

Quartile 3

(0.41–0.53)

(n = 391)

Quartile 4

(>0.53)

(n = 348)

P Value

Baseline characteristics

 Age (years)

58.65 ± 9.70

58.14 ± 10.15

58.50 ± 10.31

59.90 ± 10.16

0.15

 Male (n,%)

292(72.5%)

283(77.7%)

295(75.4%)

229(65.8%)

0.002

 Family history of CAD (n,%)

49(12.2%)

45(12.4%)

62(16.0%)

48(13.8%)

0.41

 Hypertension (n,%)

226(56.5%)

228(63.7%)

269(69.0%)

248(71.3%)

<0.001

 Dyslipidemia (n,%)

293(73.3%)

267(74.8%)

315(80.6%)

290(83.3%)

0.001

 Diabetes (n,%)

72(18%)

77(21.6%)

127(32.5%)

115(33%)

<0.001

 Current smoking (n,%)

220(55%)

193(53.6%)

208(53.3%)

165(47.6%)

0.22

 BMI (kg/m2)

25.00 ± 3.24

25.54 ± 2.96

25.76 ± 3.19

26.02 ± 3.13

<0.001

 Lipid-lowering treatment (n,%)

170(42.2%)

154(42.3%)

167(42.7%)

139(39.9%)

0.88

 Aspirin treatment (n,%)

402(99.8%)

354(97.3%)

385(98.5%)

339(97.4%)

0.03

Laboratory parameters

 TG (mmol/L)

1.48 ± 0.60

1.75 ± 1.00

1.84 ± 1.02

1.91 ± 1.23

<0.001

 TC (mmol/L)

4.03 ± 1.00

4.03 ± 0.94

4.17 ± 1.06

4.36 ± 1.47

0.002

 LDL-C (mmol/L)

2.43 ± 0.88

2.36 ± 0.80

2.47 ± 0.90

2.55 ± 0.96

0.07

 HDL-C (mmol/L)

1.08 ± 0.26

1.05 ± 0.23

1.07 ± 0.26

1.12 ± 0.28

0.02

 FFAs (mmol/L)

0.23 ± 0.06

0.35 ± 0.03

0.46 ± 0.04

0.69 ± 0.17

<0.001

 HbA1c (%)

6.17 ± 0.89

6.19 ± 1.03

6.55 ± 1.20

6.77 ± 1.32

<0.001

 FPG (mmol/L)

5.22 ± 1.13

5.33 ± 1.31

5.75 ± 1.62

6.21 ± 2.06

<0.001

 LVEF(%)

62.53 ± 8.94

62.59 ± 8.83

62.79 ± 8.12

62.18 ± 8.57

0.82

 NT-pro-BNP (fmol/ml)

712.62 ± 463.92

691.97 ± 409.19

709.71 ± 516.94

805.07 ± 703.82

0.07

 Creatine (umol/L)

74.17 ± 14.65

75.42 ± 14.07

75.04 ± 14.73

74.49 ± 17.35

0.30

 hs-CRP (mg/L)

2.31(0.01–15.15)

2.61(0.01–16.51)

3.42(0.01–17.17)

3.22(0.01–17.69)

<0.001

 cTnI (ng/ml)

0.08(0.001–6.03)

0.06(0.001–6.01)

0.09(0.001–7.37)

0.07(0.001–4.46)

0.57

Cardiovascular events (n,%)

28(6.9%)

31(8.5%)

38(9.7%)

49(14.1%)

0.008

  1. Values are expressed as mean ± SD, median with range, or n (%). SD: Standard deviation
  2. CAD coronary artery disease, BMI body mass index, TC total cholesterol, TG triglyceride, LDL-C low-density lipoprotein cholesterol, HDL-C high-density lipoprotein cholesterol, HbA1c hemoglobin A1c, FPG fasting plasma glucose, LVEF left ventricular ejection fraction, NT-pro-BNP N-terminal–pro-brain natriuretic peptide, hs-CRP high sensitivity C-reactive protein, cTnI cardiac troponin I