Table 5.
MID for FSS-ICU: distribution-based estimates
| Study (sample size) | USA – Kho (N=27-29) | USA – Needham (N=44-52) | Australia (N=19-66)a | Brazil – da Silva (N=99) | Brazil – Neto (N=561) | Combined (N=91-807) |
|---|---|---|---|---|---|---|
| Standard Error of Measurement | ||||||
| ICU awakening/admission | 1.8 | 1.7 | 1.8 | 1.0 | 1.1 | 1.3 (807) |
| ICU discharge | 1.9 | 2.1 | 2.0 | 2.0 | 2.4 | 2.4 (800) |
| Hospital discharge | 1.6 | 2.1 | 0.9 | 1.9 (91) | ||
| Minimal Detectable Change90 | ||||||
| ICU awakening/admission | 4.1 | 3.9 | 4.1 | 2.4 | 2.7 | 3.1 (807) |
| ICU discharge | 4.3 | 4.9 | 4.7 | 4.8 | 5.7 | 5.4 (800) |
| Hospital discharge | 3.7 | 4.9 | 2.2 | 4.5 (91) | ||
| 0.5 SD (moderate Cohen effect size) | ||||||
| ICU awakening/admission | 3.9 | 3.7 | 4.0 | 2.3 | 2.6 | 3.0 (807) |
| ICU discharge | 4.2 | 4.7 | 4.6 | 4.6 | 5.4 | 5.3 (800) |
| Hospital discharge | 3.6 | 4.7 | 2.1 | 4.3 (91) | ||
| 0.2 SD (small Cohen effect size) | ||||||
| ICU awakening/admission | 1.6 | 1.5 | 1.6 | 0.9 | 1.0 | 1.2 (807) |
| ICU discharge | 1.7 | 1.9 | 1.8 | 1.8 | 2.2 | 2.1 (800) |
| Hospital discharge | 1.4 | 1.9 | 0.8 | 1.7 (91) | ||
Abbreviations: MID: minimal important difference; FSS-ICU: functional status score for the intensive care unit; SD: standard deviation.
a
Only 19 patients at hospital discharge.