TABLE 1.
Definitions of Metrics for Each Cardiometabolic Component, Categorized by Optimal, Intermediate, and Poor Levelsa
Cardiometabolic Component | Optimal | Intermediate | Poor |
---|---|---|---|
Adiposityb | BMI <25 kg/m2 AND WC ≤88 cm (women)/WC ≤102 cm (men) | BMI 25–30 kg/m2 AND WC ≤88 cm (women)/WC ≤102 cm (men) | BMI >30 kg/m2 OR WC >88 cm (women)/WC>102 cm (men) |
Blood glucosec,d | FPG <100 mg/dL AND HbA1c <5.7% AND NOT taking diabetes medication | FPG 100–125 mg/dL OR HbA1c 5.7%−6.4% OR FPG <100 mg/dL AND HbA1c <5.7% AND taking diabetes medication | FPG ≥126 mg/dL OR HbA1c ≥6.5% |
Blood lipidse,f | TC:HDL <3.5:1 AND NOT taking lipid-lowering medication | TC:HDL 3.5–5:1 OR TC:HDL <3.5:1 AND taking lipid-lowering medication | TC:HDL >5:1 |
Blood pressureg | SBP <120 AND DBP <80 AND NOT taking BP-lowering medications | (SBP 120–139 OR DBP 80–89) OR (SBP <120 AND DBP <80 AND taking BP-lowering medications) | SBP ≥140 OR DBP ≥90 |
History of CVDh | None of the listed conditions | Angina only | One or more of CHD, myocardial infarction, heart failure, stroke |
We separately evaluated metabolic syndrome as defined by the ATPIII/National Heart, Lung, and Blood Institute guidelines as presence of 3 or more of the following: HDL-C <40 mg/dL (men)/<50 mg/dL (women) or on drug treatment for reduced HDL-C; triglycerides ≥150 mg/dL or on drug treatment for elevated triglycerides; blood pressure ≥130 SBP or ≥85 DBP or on antihypertensive drug treatment with a history of hypertension; WC ≥102 cm (men)/ ≥88 cm (women); and fasting plasma glucose ≥100 mg/dL or on drug treatment for elevated glucose.14
In sensitivity analyses, BMI thresholds for Asian American individuals were as follows: optimal: BMI <23 kg/m2, intermediate: 23–27.5 kg/m2, and poor: BMI >27.5 kg/m2, based on guidelines from National Institute for Health and Care Excellence, United Kingdom, World Health Organization, and American Diabetes Association.13
FPG and HbA1c levels from the American Diabetes Association37 FPG values before 2015–2016 NHANES survey cycles were corrected to account for differences in measurement instruments used. See Supplemental Text 1 for further details.
Self-reported history of diabetes was not separately included in the definitions.
TC:HDL levels from Calling et al.38
In sensitivity analyses, we evaluated LDL-cholesterol and triglyceride levels instead of the TC:HDL ratio. Optimal: LDL<100 mg/dL, TG <150 mg/dL, and not taking lipid-lowering medication; intermediate: LDL 100–159 mg/dL or TG 150–174 mg/dL, regardless of lipid-lowering medication usage or LDL <100 mg/dL and TG <150 mg/dL and taking lipid-lowering medication; and poor: LDL ≥160 mg/dL or TG ≥175 mg/dL or taking lipid-lowering medication.39
Blood pressure levels from Unger et al.40
Prior CHD, myocardial infarction, heart failure, or stroke based on self-reported history. Presence of angina based on having both a positive Rose Questionnaire or use of anti-anginal medication.
BMI = body mass index; CHD = coronary heart disease; CVD = cardiovascular disease; DBP = diastolic blood pressure; FPG = Fasting Plasma Glucose; HbA1c = Hemoglobin A1c; LDL = low-density lipoprotein; SBP = systolic blood pressure; TC:HDL = total cholesterol to high-density lipoprotein ratio; TG = triglycerides; WC = waist circumference.