Item analysis of Barthel index admission scores (n=419)
| Item | Item analyses | ||
|---|---|---|---|
| Item-total correlation2-150(RO2-151) | Effect size2-152(RO2-151) | Overall index2-153 (RO2-151) | |
| Transfer | 0.83 (1=) | 0.53 (5) | 5 (1) |
| Bathing | 0.57 (6) | 0.68 (1) | 6 (2) |
| Toilet use | 0.83 (1=) | 0.42 (7) | 7 (3) |
| Stairs | 0.68 (5) | 0.64 (2) | 10 (4) |
| Mobility | 0.77 (4) | 0.61 (3) | 12 (5) |
| Dressing | 0.81 (3) | 0.51 (6) | 18 (6) |
| Feeding | 0.53 (8) | 0.55 (4) | 32 (7) |
| Grooming | 0.56 (7) | 0.41 (8) | 56 (8) |
| Bladder | 0.42 (9) | 0.30 (9) | 81 (9) |
| Bowels | 0.34 (10) | 0.17 (10) | 100 (10) |
↵2-150 Calculated as the correlation between the item score and the total score generated by summing the other 9 items.
↵2-151 Rank order: 1=highest value, 10=lowest value.
↵2-152 Mean change score (discharge minus admission) divided by SD of admission scores.
↵2-153 Cross product of rank order for item total correlation and effect size—for example, for transfer item=1×5=5.