Summary of findings 5. Installation of safety nets to restrict the availability of, or access to, means of suicide by jumping.

Safety nets
Patients or population: adults or children of all ethnicities Setting: natural or man‐made points of elevation Intervention: interventions to restrict the availability of, or access to, means of suicide by jumping Comparison: any other intervention or no intervention
Outcomes	Absolute effects		Relative effect (95% CI)	No of participants (studies)	Quality of the evidence (GRADE)	Comments
	Before intervention	After intervention
Suicide (Observation period: pre‐intervention 19.5 years; postintervention 6.5 years)	22	1	IRR = 0.09, 95% CI 0.01 to 1.30	2 studies	⊕⊕⊝⊝ Lowa,b
Attempted suicide	‐	‐	‐	‐	‐
Study withdrawal	‐	‐	‐	‐	‐
Change in hospital admission rates	‐	‐	‐	‐	‐
Cost‐effectiveness of interventions	‐	‐	‐	‐	‐
CI: confidence interval; IRR: incidence rate 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.

^aUpgraded by one level because of large magnitude of intervention effect

^bDowngraded by one level due to methodological limitations of the included studies and heterogeneity.