| Study | Sequence generation | Allocation concealment | Blinding | Incomplete outcome data | Selective reporting | Other | Overall |
|---|---|---|---|---|---|---|---|
| Doody et al.24 | L | L | L | L | L | H | L |
| Feldman et al.16 | L | L | L | H | L | H | U |
| Petersen et al.27 | U | U | L | L | L | L | U |
| Salloway et al.28 | U | U | L | H | L | H | U |
| Winblad et al.17 | U | U | L | L | L | H | U |
| Suzuki et al.18 | U | U | L | L | L | H | U |
| Tsai et al.29 | L | U | L | L | L | H | U |
| de Jager et al.26 | L | L | L | L | L | U | L |
| Tsolaki et al.19 | U | U | U | L | L | L | U |
| van Uffelen et al.30 | L | L | L | L | L | H | L |
| Wei et al.20 | U | U | H | U | L | U | U |
| Suzuki et al.25 | L | L | L | L | L | L | L |
| Rojas et al.21 | U | U | L | H | L | H | U |
| Lee et al.22 | L | U | L | L | L | H | U |
| Naeini et al.23 | U | U | L | L | L | L | U |
| Rondanelli et al.31 | U | U | L | L | L | H | U |
| Yakoot et al.32 | L | L | L | L | L | H | L |
Note: H = high, L = low, U = unclear.