Aus Cvd Risk Calculator

PREDICT Equation:

\[ CVD Risk \% = logistic f(age, sex, smoking, diabetes, SBP, TC/HDL) \]

Age:

years

Sex:

Smoking:

Diabetes:

Systolic Blood Pressure (SBP):

mmHg

Total Cholesterol/HDL Ratio:

5-Year CVD Risk:

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1. What is the PREDICT Equation?

The PREDICT equation estimates 5-year cardiovascular disease (CVD) risk probability using a recalibrated New Zealand model. It calculates risk based on age, sex, smoking status, diabetes status, systolic blood pressure, and total cholesterol to HDL ratio.

2. How Does the Calculator Work?

The calculator uses the PREDICT equation:

\[ CVD Risk \% = logistic f(age, sex, smoking, diabetes, SBP, TC/HDL) \]

Where:

\( age \) — Age in years
\( sex \) — Male or Female
\( smoking \) — Smoking status (Yes/No)
\( diabetes \) — Diabetes status (Yes/No)
\( SBP \) — Systolic Blood Pressure (mmHg)
\( TC/HDL \) — Total Cholesterol to HDL Ratio

Explanation: The equation uses logistic regression to calculate the probability of developing cardiovascular disease within 5 years based on multiple risk factors.

3. Importance of CVD Risk Assessment

Details: Accurate CVD risk assessment is crucial for primary prevention, guiding lifestyle interventions, and determining the need for pharmacological treatments like statins or antihypertensives.

4. Using the Calculator

Tips: Enter age in years, select sex and status for smoking and diabetes, input systolic blood pressure in mmHg, and provide total cholesterol to HDL ratio. All values must be valid and within reasonable ranges.

5. Frequently Asked Questions (FAQ)

Q1: What is considered high CVD risk?
A: Generally, 5-year CVD risk ≥10-15% is considered high, but thresholds may vary by guidelines and patient characteristics.

Q2: How accurate is the PREDICT equation?
A: PREDICT is well-validated in New Zealand populations and provides good discrimination for CVD risk prediction in appropriate populations.

Q3: Should this calculator be used for everyone?
A: The calculator is designed for primary prevention in adults without established CVD. It may not be accurate for those with existing heart disease.

Q4: What are the limitations of this calculator?
A: Limitations include not accounting for family history, physical activity, diet, or other emerging risk factors. It's population-based and may not perfectly predict individual risk.

Q5: How often should CVD risk be reassessed?
A: Typically every 3-5 years, or more frequently if risk factors change significantly or borderline results require monitoring.