From: Rasch analysis of the Patient Rated Elbow Evaluation questionnaire
Item | Uniform DIF for Age | Non-Uniform DIF for Age | ||||||
---|---|---|---|---|---|---|---|---|
MS | F | DF | P | MS | F | DF | P | |
Pain sub scale | ||||||||
Pain - When it is at its worst | 1.55 | 1.77 | 3 | 0.15 | 0.92 | 1.05 | 9 | 0.40 |
Pain - at resta | 2.98 | 4.82 | 3 | 0.00 | 0.79 | 1.28 | 9 | 0.25 |
Pain - When lifting a heavy object | 1.29 | 1.36 | 3 | 0.26 | 0.40 | 0.42 | 9 | 0.93 |
Pain - When doing a task with repeated elbow movement | 1.31 | 2.02 | 3 | 0.11 | 0.44 | 0.68 | 9 | 0.73 |
How often do you have pain? | 0.89 | 1.11 | 3 | 0.35 | 0.63 | 0.78 | 9 | 0.64 |
Specific activities sub scale | ||||||||
Comb my hair | 0.38 | 0.58 | 3 | 0.63 | 1.38 | 2.08 | 9 | 0.03 |
Eat with a fork or spoon | 0.62 | 0.90 | 3 | 0.50 | 0.84 | 1.20 | 9 | 0.30 |
Pull a heavy object | 1.23 | 1.58 | 3 | 0.20 | 0.50 | 0.64 | 9 | 0.76 |
Use my arm to rise from a chair | 1.25 | 1.41 | 3 | 0.24 | 0.45 | 0.51 | 9 | 0.86 |
Carry a 10 lb object with my arm at my side | 3.96 | 3.32 | 3 | 0.02 | 2.20 | 1.84 | 9 | 0.06 |
Throw a small object, such as a tennis ball | 1.74 | 1.69 | 3 | 0.17 | 1.14 | 1.11 | 9 | 0.35 |
Use a telephone | 0.99 | 0.94 | 3 | 0.42 | 0.94 | 0.89 | 9 | 0.54 |
Do up buttons on the front of my shirt | 2.05 | 1.99 | 3 | 0.12 | 0.65 | 0.63 | 9 | 0.77 |
Wash my opposite armpit | 1.94 | 2.54 | 3 | 0.06 | 0.21 | 0.27 | 9 | 0.98 |
Tie my shoe | 0.29 | 0.27 | 3 | 0.84 | 0.57 | 0.54 | 9 | 0.85 |
Turn the doorknob and open a door | 1.39 | 1.46 | 3 | 0.22 | 1.05 | 1.10 | 9 | 0.36 |
Usual activities sub scale | ||||||||
Personal activities (dressing, washing) | 0.07 | 0.10 | 3 | 0.96 | 0.12 | 0.19 | 6 | 0.98 |
Household work (cleaning, maintenance) | 1.38 | 2.83 | 3 | 0.04 | 0.33 | 0.67 | 6 | 0.67 |
Work (your job or everyday work) | 0.95 | 1.28 | 3 | 0.28 | 1.33 | 1.81 | 6 | 0.10 |
Recreational activities | 2.41 | 2.99 | 3 | 0.03 | 0.47 | 0.58 | 6 | 0.74 |