Table 1 Inclusion and exclusion criteria for studies
| Inclusion | Exclusion |
|---|---|
| Mechanically ventilated adults via tracheostomy or endotracheal tube in a relevant clinical location (intensive care, weaning centres, respiratory high care/dependency areas) | Children (< 18 years) |
| Describes use of MI-E |
Editorial pieces Letters to the Editor |
|
Any study design (include randomised controlled trials (RCT), quasi and non-randomised clinical trials, before and after studies, interrupted time series cohort studies, qualitative designs, mixed methods, cross-sectional design, case reports/series, and research letters which present original data) | Bench and animal studies |
| Published from 1990 onwards |