Table 2 Descriptives for PROMIS-29 items and domains, and reliability (Cronbach’s alpha)
From: The Norwegian PROMIS-29: psychometric validation in the general population for Norway
Scale/item | Missing % | Mean (SD)a | Floor % | Ceiling % | Cronbach’s alpha |
|---|---|---|---|---|---|
Physical Function | 2.7 | 52.61 (7.41) | 0.6 | 70.6 | 0.93 |
Are you able to do chores such as vacuuming or yard work | 1.6 | 4.57 (0.90) | 2.3 | 75.7 | |
Are you able to go up and down stairs at a normal pace | 1.8 | 4.63 (0.85) | 1.9 | 79.4 | |
Are you able to go for a walk of at least 15 min | 1.8 | 4.79 (0.75) | 1.8 | 87.6 | |
Are you able to run errands and shop | 2.2 | 4.77 (0.70) | 1.4 | 87.4 | |
Anxiety | 3.9 | 47.94 (8.41) | 45.9 | 0.1 | 0.90 |
I felt fearful | 1.9 | 1.41 (0.75) | 71.7 | 0.2 | |
I found it hard to focus on anything other than my anxiety | 3.4 | 1.30 (0.68) | 80.0 | 0.5 | |
My worries overwhelmed me | 2.8 | 1.52 (0.85) | 66.9 | 0.5 | |
I felt uneasy | 2.9 | 1.76 (0.93) | 50.7 | 0.7 | |
Depression | 2.8 | 47.37 (7.99) | 54.2 | 0.3 | 0.91 |
I felt worthless | 0.7 | 1.45 (0.82) | 71.5 | 0.7 | |
I felt helpless | 0.8 | 1.46 (0.83) | 70.9 | 0.8 | |
I felt depressed | 1.3 | 1.54 (0.86) | 65.6 | 0.5 | |
I felt hopeless | 1.8 | 1.33 (0.75) | 79.6 | 0.7 | |
Fatigue | 2.7 | 44.69 (9.78) | 31.9 | 0.6 | 0.95 |
I feel fatigued | 0.7 | 1.87 (1.00) | 44.5 | 2.5 | |
I have trouble starting things because I am tired | 1.7 | 1.83 (0.96) | 45.0 | 1.7 | |
How run-down did you feel on average | 1.6 | 1.80 (0.94) | 46.3 | 1.4 | |
How fatigued were you on average | 1.8 | 1.81 (0.94) | 45.5 | 1.2 | |
Sleep Disturbance | 2.2 | 47.40 (8.11) | 7.5 | 0.8 | 0.85 |
My sleep quality was… | 0.3 | 2.41 (1.00) | 17.6 | 3.1 | |
My sleep was refreshing | 1.1 | 2.60 (1.04) | 13.0 | 5.3 | |
I had a problem with my sleep | 1.1 | 2.04 (1.03) | 35.9 | 2.6 | |
I had difficulty falling asleep | 1.3 | 1.94 (1.08) | 44.5 | 3.4 | |
Ability to participate in social roles and activities | 1.8 | 55.82 (8.46) | 0.8 | 40.6 | 0.93 |
I have trouble doing all of my regular leisure activities with others | 0.5 | 4.28 (1.03) | 2.5 | 57.7 | |
I have trouble doing all of the family activities that I want to do | 1.2 | 4.34 (0.98) | 1.8 | 60.4 | |
I have trouble doing all of my usual work (include work at home) | 0.7 | 4.26 (1.02) | 2.3 | 56.4 | |
I have trouble doing all of the activities with friends that I want to do | 1.0 | 4.12 (1.08) | 2.7 | 49.7 | |
Pain interference | 3.0 | 48.83 (8.44) | 50.8 | 1.1 | 0.96 |
How much did pain interfere with your day to day activities | 1.8 | 1.73 (0.97) | 53.6 | 1.9 | |
How much did pain interfere with work around the home | 2.6 | 1.59 (0.94) | 63.6 | 1.8 | |
How much did pain interfere with your ability to participate in social activities | 2.1 | 1.50 (0.94) | 71.1 | 2.2 | |
How much did pain interfere with your household chores | 2.3 | 1.55 (0.93) | 66.4 | 2.2 | |
Pain intensityb | |||||
How would you rate your pain on average | 1.9 | 1.95 (2.12) | 31.5 | 0.1 | - |