Summary of findings
| Pharmacological intervention | No. of systematic reviews according to PRISMA with low risk of bias | No. of systematic reviews according to PRISMA with high risk of bias | No. of semisystematic reviews according to PRISMA* | Quality of the evidence | Comments |
| Delirium prevention | 1 | 0 | 8 | low | Seven trials with overall high risk of bias included in the systematic review with low risk of bias. The eight semisystematic reviews were all high risk of bias and included solely trials with overall high risk of bias. |
| Delirium management | 0 | 0 | 0 | No evidence | No systematic reviews according to PRISMA were identified. Neither was a semisystematic review identified. |
Presence and quality of evidence by type of pharmacological intervention.
*In agreement with the PRISMA statement except two arbitrary PRISMA criteria.
PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses.