Table 3 Frequency of item administration in simulated computerized adaptive testing, by level of fatigue
From: Validity assessment of the PROMIS fatigue domain among people living with HIV
Item | Overall (n = 1597) | Fatigue score | |||
|---|---|---|---|---|---|
≤40 (n = 246) | >40–50 (n = 561) | >50–60 (n = 556) | >60 (n = 234) | ||
How often did you feel tired? | 22.0 | 100.0 | 18.4 | 0.0 | 1.3 |
How often did you run out of energy? | 57.5 | 100.0 | 54.2 | 45.9 | 48.7 |
How often were you too tired to take a bath or shower? | 6.6 | 43.1 | 0.0 | 0.0 | 0.0 |
How often did you experience extreme exhaustion? | 7.3 | 45.9 | 0.0 | 0.0 | 1.7 |
How often did your fatigue limit you at work (including work at home)? | 8.9 | 57.7 | 0.0 | 0.0 | 0.0 |
How often were you too tired to think clearly? | 7.8 | 45.9 | 0.0 | 0.0 | 4.7 |
How often did you have enough energy to exercise strenuously? | 8.7 | 56.5 | 0.0 | 0.0 | 0.0 |
How often were you physically drained? | 99.7 | 100.0 | 100.0 | 100.0 | 97.9 |
To what degree did you have to force yourself to get up and do things? | 79.8 | 46.7 | 69.5 | 100.0 | 91.5 |
How run-down did you feel on average? | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
How fatigued were you on average? | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
How fatigued were you when your fatigue was at its worst? | 11.6 | 75.2 | 0.0 | 0.0 | 0.0 |
To what degree did your fatigue interfere with your physical functioning? | 70.6 | 49.6 | 38.3 | 100.0 | 100.0 |
I felt fatigued | 47.3 | 64.2 | 82.7 | 22.1 | 4.3 |
I had trouble starting things because I was tired | 20.5 | 48.0 | 0.0 | 35.1 | 6.0 |
How much were you bothered by your fatigue on average? | 85.2 | 85.4 | 75.6 | 89.9 | 97.0 |
How often did you wake up feeling exhausted? | 7.6 | 49.2 | 0.0 | 0.0 | 0.0 |
How often did you feel so exhausted that you stayed in bed all day? | 6.9 | 44.7 | 0.0 | 0.0 | 0.0 |
How often were you too exhausted to take your medication? | 6.2 | 40.2 | 0.0 | 0.0 | 0.0 |
How often were you so exhausted that you missed appointments? | 6.6 | 42.7 | 0.0 | 0.0 | 0.0 |
How often were you too exhausted to carry out your daily responsibilities? | 7.0 | 43.9 | 0.0 | 0.0 | 1.7 |
How often did your body feel exhausted? | 46.1 | 100.0 | 61.3 | 7.0 | 46.2 |
How often were you too exhausted to chew and swallow food? | 6.1 | 39.8 | 0.0 | 0.0 | 0.0 |
How often were you too exhausted to concentrate? | 7.0 | 45.5 | 0.0 | 0.0 | 0.0 |
Mean number of items | 8.3 | 15.2 | 7.0 | 7.0 | 7.0 |
Mean standard error of measurement (T-metric) | 2.2 | 3.2 | 2.1 | 2.0 | 2.1 |