From the Strong Heart Study


Calculator: Estimated Risk of Developing CHD in 10 Years


The risk calculator below uses research data from the Strong Heart Study (Citation: Circulation 2006; 113; 2897 – 2905) to estimate a person’s chance of having CHD (Coronary Heart Disease) in the next 10 years. It is designed for the American Indians of age 30 and older. To find your estimated risk, enter your information in the calculator below. Definitions and descriptions of some terms in the calculator are provided.


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Prediction using (select one)

LDL-C and HDL-C    TC and HDL-C


Male    Female


Are you currently taking hypertension medications for high blood pressure?

No    Yes

Systolic Blood Pressure (SBP)

LDL-C or TC (mg/dL)

HDL-C (mg/dL)

Do you have diabetes?

No    Yes

Are you a current smoker?

No    Yes

Do you have microalbuminuria?

No    Yes

Do you have macroalbuminuria?

No    Yes

Your Estimated Risk: 



Definitions and Descriptions


·    LDL-C

Low Density Lipoproteins Cholesterol. Sometimes it is referred to as the "bad" cholesterol. High levels of LDL-C are a risk factor for heart disease.


LDL-C (bad cholesterol) level

Less than 100 mg/dL


100-129 mg/dL

Near optimal/above optimal

130-159 mg/dL

Borderline high

160-189 mg/dL


190 mg/dL or higher

Very high

Source: National Cholesterol Education Program (NCEP)


·    HDL-C

High Density Lipoproteins Cholesterol. Sometimes it is referred to as the "good" cholesterol. Higher levels of HDL in the blood seem to protect against heart disease.


HDL-C (good cholesterol) level

60 mg/dL or higher


Less than 40 mg/dL


Source: National Cholesterol Education Program (NCEP)


·    TC

The total amount of all cholesterol in your blood. The higher a person's total cholesterol, the greater a person's risk for heart disease.


TC (total cholesterol) level

Less than 200 mg/dL


200-239 mg/dL

Borderline high

240 mg/dL or higher


Source: National Cholesterol Education Program (NCEP)




·    Systolic Blood Pressure (SBP)

Blood pressure readings are usually given as 2 numbers: for example, 110 over 70 (written as 110/70). The first number is the systolic blood pressure reading, and it represents the maximum pressure exerted when the heart contracts. The second number is the diastolic blood pressure reading, and it represents the pressure in the arteries when the heart is at rest. SBP is measured by mm Hg (millimeters of mercury).


SBP (Systolic Blood Pressure) Level

Less than 120 mmHg


140 mmHg or higher


Source: Seventh Joint National Committee on Hypertension (JNC-VII)


·    Microalbuminuria and Macroalbuminuria

Microalbuminuria and macroalbuminuria are problems of the kidney, meaning mildly and moderately to severely increased leakage of protein into the urine. Both are estimated by the urinary albumin – urinary creatinine ratio (ACRATIO).



ACRATIO ³ 300 mg/g


ACRATIO 30 – 299 mg/g


ACRATIO < 30 mg/g


·    Your Estimated Risk: This percentage indicates the chance of you developing CHD in 10 years. For example, if your estimated risk is 20%, it means that 20 out of the 100 people who enter the exact same information as you did in the calculator would likely develop CHD in 10 years.