for the main comparison.

Dietary Advice compared with no advice for schizophrenia
Patient or population: participants with schizophrenia Settings: hospital or community Intervention: dietary advice Comparison: no dietary advice
Outcomes	Illustrative comparative risks* (95% CI)		Relative effect (95% CI)	No of Participants (studies)	Quality of the evidence (GRADE)	Comments
	Assumed risk	Corresponding risk
	Standard Care	Dietary Advice
Improvement in nutritional intake	We found no relevant trials and therefore no data were available
Change in measures of nutritional status: weight (kg), body mass index (kg/ m2), and waist/ hip ratio (cms)	No trial‐based data
Mental state	No trial‐based data
Clinically important adverse effects	No trial‐based data
Measures of physiological function	No trial‐based data
*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). CI: Confidence interval; RR: Risk Ratio
GRADE Working Group grades of evidence High quality: Further research is very unlikely to change our confidence in the estimate of effect. Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. Very low quality: We are very uncertain about the estimate.