ToolsCalculators
G8 Geriatric Screening Tool
Eight-item screen identifying older cancer patients who would benefit from a full geriatric assessment.
G8 Geriatric Screening Tool
Food intake over the past 3 months
Weight loss over the past 3 months
Mobility
Neuropsychological problems
Body mass index (BMI)
kg/m²
Takes more than 3 prescription medications per day
Compared with other people of the same age, how does the patient rate their health status?
Age
Complete the fields above to see the result.
When to use
- First-line screening of older patients with cancer to decide who needs a full comprehensive geriatric assessment before treatment planning.
Formula
Sum of 7 geriatric-assessment items (food intake 0-2, weight loss 0-3, mobility 0-2, neuropsychological status 0-2, BMI 0-3, polypharmacy 0-1, self-rated health 0-2) plus an age item (0-2). Total range 0-17; score <=14 flags the patient for comprehensive geriatric assessment.
Pearls and pitfalls
- Designed to be highly sensitive (favouring over-referral) rather than highly specific, so an abnormal score should prompt assessment, not automatically withhold treatment.
- Validated in the multicentre ONCODAGE cohort of patients aged 70 and older with a solid or haematological malignancy.