Subjective Global Assessment (SGA, Detsky)
Subjective Global Assessment (Detsky 1987): the reference bedside malnutrition assessment, a structured clinician gestalt over history and exam features yielding an overall A (well nourished), B (moderate/suspected), or C (severe) rating.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Overall SGA rating
- C — severely malnourished
Result: SGA C — severely malnourished.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Features
- Five history features (weight change, intake change, GI symptoms > 2 weeks, functional capacity, disease demand) and four exam features (fat loss, muscle wasting, edema, ascites). No numeric score.
- Rating
- A (well nourished), B (moderately or suspected malnourished), or C (severely malnourished). Weight loss > 10% ongoing, poor intake, and fat/muscle loss weigh heaviest.
What you enter
- Overall SGA rating
How this is calculated
Citation
Detsky AS, McLaughlin JR, Baker JP, Johnston N, Whittaker S, Mendelson RA, Jeejeebhoy KN. What is subjective global assessment of nutritional status? JPEN J Parenter Enteral Nutr. 1987;11(1):8-13. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.