This is a protocol for a Cochrane Review (intervention). The objectives are as follows:

To assess in hospitalised older people with (risk of) malnutrition the effects of different nutrition interventions (e.g. supportive interventions, nutritional counselling, food modifications, oral nutritional supplements, comprehensive individualised nutritional interventions or combined approaches) compared to control groups (usual care, placebo or health education materials) on patient-relevant outcomes, and to rank the effects of the different treatments by using a network meta-analysis with individual participant data.