Table 3 Test–retest reliability: intraclass correlation or kappa coefficient for each parameter of the Bengali LAI
Parameters | Intraclass correlation co-efficient (ICC) | Kappa co-efficient |
|---|---|---|
L1A (pain or discomfort during nocturnal bed rest) | 0.89 | |
L1B (duration of morning stiffness or pain after getting up) | 0.93 | |
L1C (remaining standing for 30 min increases pain) | – | 0.64 |
L1D (pain on walking) | 0.81 | |
L1E (pain or discomfort when getting up from sitting position without the help of arms) | – | 0.65 |
L2 (maximum distance walked) | 0.97 | |
L3A (can you go up a standard flight of stairs) | 0.90 | |
L3B (can you go down a standard flight of stairs) | 0.92 | |
L3C (can you squat) | 0.91 | |
L3D (can you walk on uneven ground) | 0.93 |