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Table 1 Examples of different heart age results for the same patient using different calculators

From: Should heart age calculators be used alongside absolute cardiovascular disease risk assessment?

Patient profile Risk factors NZ: HF website UK: NHS website
Case 1 with elevated cholesterol but ‘ideal’ blood pressure would receive an older heart age estimate on both calculators, with two medications suggested for the lower result Age: 57
Sex: female
Systolic BP: 120
Chol ratio: 5.6
BMI: 24
Smoking: no
Diabetes: no
Older heart age (64)
5 yr. absolute risk = 4%
Mild risk below medication threshold
Older heart age (60)
10 yr. absolute risk = 5%
May need chol & blood pressure medication
Case 2 with elevated blood pressure but lower than ‘ideal’ cholesterol would receive an older heart age on NZHF or the same heart age as current age on NHS, with one medication suggested for the lower result Age: 62
Sex: male
Systolic BP: 130
Chol ratio: 3.5
BMI: 25
Smoking: no
Diabetes: no
Older heart age (63)
5 yr. absolute risk = 7%
Mild risk below medication threshold
Same heart age (62)
10 yr. absolute risk = 9%
May need blood pressure medication
Case 3 with obesity but ‘ideal’ blood pressure and cholesterol would receive a younger heart age on NZHF or an older heart age on NHS, with one medication suggested for the higher result Age: 48
Sex: female
Systolic BP: 120
Chol ratio: 4
BMI: 38
Smoking: no
Diabetes: no
Young heart age (< 48)
5 yr. absolute risk = 1%
Mild risk below medication threshold
Older heart age (49)
10 yr. absolute risk = 2%
May need blood pressure medication
  1. Chol ratio total/HDL cholesterol ratio, BMI body mass index, NZ HF New Zealand Heart Foundation website (www.knowyournumbers.co.nz) (2017 version), UK NHS United Kingdom National Health Service website (www.nhs.uk/tools/pages/heartage.aspx) (2017 version)