TABLE 2.

The classifications of covariates.

Covariates	Classifications
Sex	Male; female
Age (year)	60–70; 70–80; ≥80
Educational level	Below high school; high school; above high school
Marital status	Married/living with partner; widowed/divorced/separated/never married
Poverty-income ratio	≤0.99; and ≥1
Race	Mexican American; other Hispanic; non-Hispanic White; non-Hispanic Black; other race
Body mass index (BMI)	≤25 kg/m2; 25 to <30 kg/m2; ≥30 kg/m2
Smoked at least 100 cigarettes in life	No; yes
Had at least 12 alcohol drinks/year	No; yes
Occupational physical activity	Vigorous; moderate; other
Recreational physical activity	Vigorous; moderate; other
Hypertensiona	No; yes
Diabetesb	No; yes
Strokec	No; yes
Total energy intake (kcal/day)d	Continuous

^aSystolic blood pressure (SBP) ≥130 mmHg, or diastolic blood pressure (DBP) ≥80 mmHg, or ever been told by a doctor or other health professional that had hypertension, or currently taking antihypertensive drugs were hypertensive patients.

^bDiabetes was defined as ever been told by a doctor or other health professional that had diabetes, or taking insulin, or fasting plasma glucose (FPG) level at least 126 mg/dL, or 2-h plasma glucose level above 200 mg/dL, or a glycated hemoglobin (HbA1c) level of 6.5% or greater.

^cStroke was defined as self-reported physician diagnosis of stroke.

^dTotal energy intake of each participant was the average of two 24-h dietary energy intake.