Comparison of shoulder questionnaire attributes at baseline assessment
| SDQ-NL | SDQ-UK | SPADI | SRQ | |
|---|---|---|---|---|
| *p<0.05 by statistical test of between-groups comparisons (by the Kruskal-Wallis test); n may be <90 owing to some missing data; numbers are †counts (percentages), ‡median (range); §Likert scale: 0 = definitely not, 5 = definitely did. | ||||
| Time to complete (min)*‡ | 2.0 (1.0–8.0) | 3.0 (1.0–8.0) | 2.0 (1.0–4.0) | 4.0 (1.0–16.0) |
| Reflects shoulder problem (Likert scale 0–5)*‡§ | 5.0 (2.0–5.0) | 4.0 (1.0–5.0) | 5.0 (1.0–5.0) | 4.0 (0.0–5.0) |
| Missing data† | ||||
| 0 | 83 (92) | 80 (90) | 84 (93) | 80 (89) |
| 1 | 3 (4) | 7 (8) | 4 (5) | 3 (3) |
| 2 | 2 (2) | 0 (0) | 1 (1) | 1 (1) |
| ⩾3 | 2 (2) | 2 (2) | 1 (1) | 6 (7) |
| Ease of completion† | ||||
| Very easy | 71 (79) | 62 (69) | 61 (69) | 57 (64) |
| Moderately easy | 19 (21) | 26 (29) | 27 (30) | 32 (36) |
| Moderately difficult | 0 (0) | 2 (2) | 1 (1) | 0 (0) |
| Very difficult | 0 (0) | 0 (0) | 0 (0) | 0 (0) |