g8_geriatric_screen: G8 Geriatric Screening Tool

In cliot: Clinical Indices and Outcomes Tools

G8 Geriatric Screening Tool

Description

Calculates the G8 score, a screening tool developed to identify elderly cancer patients who would benefit from a Comprehensive Geriatric Assessment (CGA). The score consists of 7 items from the Mini Nutritional Assessment (MNA) and patient age. A score of 14 or lower indicates vulnerability or frailty.

Usage

g8_geriatric_screen(food_intake, weight_loss, mobility, neuropsychological,
                    bmi_score, more_than_3_meds, self_rated_health, age)

Arguments

food_intake	Numeric (0-2). Has food intake declined over the past 3 months? 0: Severe decrease in food intake. 1: Moderate decrease in food intake. 2: No decrease in food intake.
weight_loss	Numeric (0-3). Weight loss during the last 3 months. 0: Weight loss > 3 kg. 1: Does not know. 2: Weight loss between 1 and 3 kg. 3: No weight loss.
mobility	Numeric (0-2). Mobility status. 0: Bed or chair bound. 1: Able to get out of bed/chair but does not go out. 2: Goes out.
neuropsychological	Numeric (0-2). Neuropsychological problems. 0: Severe dementia or depression. 1: Mild dementia. 2: No psychological problems.
bmi_score	Numeric (0-3). Body Mass Index (BMI). 0: BMI < 19. 1: BMI 19 - <21. 2: BMI 21 - <23. 3: BMI >= 23.
more_than_3_meds	Numeric (0 or 1). Takes more than 3 prescription drugs per day. (1 = Yes, 0 = No). Note: "No" adds 1 point to the score.
self_rated_health	Numeric (0, 0.5, 1, 2). In comparison with other people of the same age, how does the patient consider their health status? 0: Not as good. 0.5: Does not know. 1: As good. 2: Better.
age	Numeric. Patient age in years. < 80: 2 points. 80-85: 1 point. > 85: 0 points.

Value

A list containing:

G8_Score	The calculated total score (Range 0-17).
Interpretation	Clinical recommendation regarding the need for full geriatric assessment.

References

Bellera CA, Rainfray M, Mathoulin-Pélissier S, et al. Screening older cancer patients: first evaluation of the G-8 geriatric screening tool. Ann Oncol. 2012;23(8):2166-2172. doi:10.1093/annonc/mdr587

Examples

# Example 1: Frail Patient
# Severe food decline (0), Wt loss >3kg (0), Bed bound (0), Dementia (0),
# BMI <19 (0), Polypharmacy (1), Poor health (0), Age 86 (0)
# Score = 0
g8_geriatric_screen(0, 0, 0, 0, 0, 1, 0, 86)

# Example 2: Fit Patient
# No decline (2), No wt loss (3), Goes out (2), No neuro (2),
# BMI >23 (3), No polypharmacy (0), Better health (2), Age 75 (2)
# Score = 2+3+2+2+3+1+2+2 = 17
g8_geriatric_screen(2, 3, 2, 2, 3, 0, 2, 75)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.