Table 3.
Durations of Symptoms Related to Pain and Strength.
| Duration of Symptoms (Months) | ≤3 | 4–6 | 7–12 | >12 | p-value |
|---|---|---|---|---|---|
| Pain2 | 3.1(4.6)6.4 | 2.4(4.4)6.4 | 2.6(4.3)6.6 | 2.6(4.3)6.4 | 0.74 |
| Supraspinatus Strength (%)2 | 0.49 | ||||
| 3 | 12 | 7 | 17 | 13 | |
| 4 | 63 | 62 | 53 | 54 | |
| 5 | 25 | 31 | 30 | 34 | |
| External Rotation Strength (%)2 | 0.10 | ||||
| 3 | 12 | 7 | 12 | 9 | |
| 4 | 32 | 43 | 23 | 44 | |
| 5 | 56 | 49 | 65 | 47 | |
| Flexion Strength (%)2 | 0.26 | ||||
| 3 | 10 | 5 | 8 | 8 | |
| 4 | 54 | 45 | 42 | 40 | |
| 5 | 36 | 50 | 50 | 52 | |
| Abduction Strength (%)2 | 0.41 | ||||
| 3 | 10 | 10 | 8 | 10 | |
| 4 | 59 | 44 | 43 | 47 | |
| 5 | 32 | 46 | 48 | 44 | |
| Internal Rotation Strength (%)2 | 0.16 | ||||
| 3 | 3 | 1 | 2 | 2 | |
| 4 | 9 | 5 | 0 | 11 | |
| 5 | 88 | 94 | 98 | 87 |
1
Kruskal-Wallis Test;
2
Pearson Test.
A(B)C – A=lower quartile, B= median. C=upper quartile. Strength was measured using MRC grades19, where 3= joint can be moved only against gravity with examiner’s resistance completely removed, 4= strength reduced, but contraction can still move joint against resistance, 5=muscle contracts against full resistance