Table 2 Item characteristics and internal consistency reliabilities for the MFI-20 subscales and total fatigue score in patients with chronic critical illness three months (t2) following the transfer from ICU at acute care hospital (n = 113)
Internal consistency and reliability | |||||
|---|---|---|---|---|---|
Mean (Median) | SD (Q1-Q3) | Standardized Cronbach’s alphaa | Corrected-to-total correlationa | Inter-item correlationa | |
Total | 55.9 (55.0) | 16.5 (43.5–67.0) | .91 | .23–.71 | .35 (.02–.73) |
MFI subscales | |||||
General Fatigue (GF) | 12.2 (12.0) | 4.0 (9.0–15.0) | .69 | .37–.56 | .36 (.24–.44) |
Physical Fatigue (PF) | 13.4 (13.0) | 3.7 (11.0–16.0) | .74 | .42–.64 | .42 (.28–.59) |
Reduced Activity (RA) | 12.6 (12.0) | 4.6 (9.0–16.5) | .85 | .42–.64 | .42 (.28–.59) |
Mental Fatigue (MF) | 8.7 (8.0) | 4.5 (4.0–11.0) | .86 | .63–.80 | .61 (.45–.73) |
Reduced Motivation (RM) | 8.9 (9.0) | 3.5 (6.0–11.0) | .50 | .22–.37 | .20 (.06–.32) |