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Table 2 Item location, item fit and scoring key for the final solution of the analyses

From: Rasch analysis of the modified version of the Postural Assessment Scale for Stroke patients: Postural Stroke Study in Gothenburg (POSTGOT)

Item   Location Std Dev Item fit residual mean x2 DF P Max score Rescored Scoring key
1 Supine to affected side lateral -3.61 0.32 -0.03 1.12 2 0.57 2 Yes 0 0 1 2
4 Sitting without support -3.25 0.31 -0.14 0.18 2 0.92 2 Yes 0 0 1 2
12 Sitting on the edge of bed to supine -3.23 0.27 -0.54 0.29 2 0.86 3   0 1 2 3
6 + 11 Standing with support & Sitting down from standing up -2.30 0.17 -0.63 0.22 2 0.90 6   * * * *
3 Supine to sitting up on edge of bed -2.18 0.30 0.33 0.56 2 0.75 2 Yes 0 0 1 2
2 Supine to non-affected side lateral -1.94 0.30 -0.26 0.99 2 0.61 2 Yes 0 0 1 2
5 Sitting to standing up -1.89 0.25 -1.42 0.53 2 0.77 3   0 1 2 3
10 Standing, picking up a shoe from the floor 1.35 0.26 -1.11 0.72 2 0.70 2 Yes 0 1 1 2
7 Standing without support 2.10 0.26 0.29 8.94 2 0.01 2 Yes 0 1 1 2
8 Standing on non-paretic leg 7.33 0.20 -0.06 3.88 2 0.14 2 Yes 0 1 1 2
9 Standing on paretic leg 7.63 0.16 -0.07 5.36 2 0.07 3   0 1 2 3
  1. Location; on the logit ruler from the easiest (-) to the most difficult (+) item, Std Dev; Standard deviation, x2; Chi-square, P;Chi-square probability (Bonferroni adjusted p 0.004545). *For each item = max score 6.