Table 2 Characteristics of study population

Age (yrs)

67 ± 9

67 ± 9

0.94

Height (cm)

160 ± 6.6

174 ± 7.5

<0.001

Weight (lb)

161 ± 36

188 ± 35

<0.001

BMI (kg/m2)

28 ± 6

28 ± 5

0.24

White/African/Chinese/Hispanic (%)

54/23/11/12

50/22/12/16

0.13

Heart rate (beats/min)

65.3 ± 9.5

63.8 ± 10

0.005

Systolic blood pressure (mm Hg)

122 ± 20

121 ± 18

0.49

Diastolic blood pressure (mm Hg)

65 ± 9

71 ± 9

<0.001

Current smokers

41 (6.6)

43 (7.1)

<0.001

Hypertension

343 (54.9)

298 (49.2)

0.045

Diabetes

87 (13.9)

98 (16.2)

0.002

Metabolic syndrome^‡

233 (37.3)

182 (30)

0.001

HDL cholesterol (mg/dl)

60.2 ± 16.9

49.1 ± 13.1

<0.001

LDL cholesterol (mg/dl)

110.8 ± 31.2

100.6 ± 30.4

<0.001

Total cholesterol (mg/dl)

193.2 ± 34.6

171.5 ± 34

<0.001

Triglycerides (mg/dl)

111.8 ± 58.7

110 ± 69

0.78

eGFR (ml/min/1.73 m²)

85 ± 21

85 ± 17

0.52

Framingham risk score

0.06 ± 0.04

0.13 ± 0.07

<0.001

Native (Pre-contrast) myocardial T₁ (ms)

986 ± 45

968 ± 38

<0.001

Post-contrast myocardial T₁ (ms)^§

505 ± 41

535 ± 34

<0.001

Hematocrit (%)

38.4 ± 2.9

41.6 ± 3.5

<0.001

Extracellular volume fraction (%)^ǁ

28.1 ± 2.8

25.8 ± 2.9

<0.001