Comparison 2. Non‐vocal communication aid versus usual care with an aid.
Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
---|---|---|---|---|
2.1 Ease of communication | 1 | 73 | Mean Difference (IV, Random, 95% CI) | ‐18.32 [‐22.49, ‐14.15] |