Table 1 Systematic review study characteristics
N = 183 studies | n (%) |
|---|---|
Study design | |
 RCT | 128 (70) |
 Before and after intervention study | 29 (16) |
 Non-randomized controlled trial | 19 (10) |
 Othera | 7 (4) |
Study region | |
 North America | 58 (32) |
 Europe | 52 (28) |
 Asia | 50 (27) |
 Oceania | 15 (8) |
 Euroasia | 5 (3) |
 South America | 2 (1) |
 Multiple | 1 (1) |
Study population | |
 Adults only | 183 (100) |
 Older adults only | 150 (88) |
Patient type | |
 Surgical | 109 (60) |
 Medical | 68 (37) |
 Both | 6 (3) |
Delirium as a study objective | |
 Primary | 137 (75) |
 Secondary | 46 (25) |
Study intervention aim | |
 Prevention only | 125 (68) |
 Treatment only | 18 (10) |
 Both | 44 (22) |
Study intervention | |
 Pharmacological agent to prevent and/or treat delirium | 87 (48) |
 Protocol or bundle to prevent and/or treat delirium | 80 (44) |
 Non-pharmacological to prevent and/or treat delirium | 16 (9) |