Table 4 Graded Response Model slope (a) and location (b) parameters for items comprising the 9-item ISS
From: Unpacking the impact of chronic pain as measured by the impact stratification score
Slope | Location parameters | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Item | a | b1 | b2 | b3 | b4 | b5 | b6 | b7 | b8 | b9 | b10 |
1. Chores | 1.75 | -0.79 | 0.58 | 1.97 | 3.02 | ||||||
2. Stairs | 1.43 | -0.21 | 1.14 | 2.39 | 3.38 | ||||||
3. Walk15 | 1.60 | 0.44 | 1.48 | 2.51 | 3.43 | ||||||
4. Errands | 1.98 | 0.26 | 1.49 | 2.75 | 4.07 | ||||||
5. Interfere daily | 4.28 | -0.98 | 0.32 | 1.31 | 2.30 | ||||||
6. Interfere home | 7.20 | -0.74 | 0.36 | 1.17 | 2.00 | ||||||
7. Interfere social | 3.22 | -0.08 | 0.81 | 1.67 | 2.41 | ||||||
8. Interfere chores | 4.67 | -0.56 | 0.54 | 1.39 | 2.07 | ||||||
9. Pain intensity | 1.86 | -2.73 | -1.57 | -0.71 | -0.07 | 0.44 | 0.96 | 1.61 | 2.44 | 3.55 | 4.54 |