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Differences between non-secondary surgery group and secondary surgery group
| Variable | Non-secondary surgery group | Secondary surgery group | P values |
|---|---|---|---|
| Patient number | 9 | 6 | |
| Sex, male/female | 5/4 | 6/0 | 0.103 |
| Age (year), mean ± standard deviation | 59 ± 9 | 45 ± 13 | 0.113 |
| Rotator cuff tear | |||
| No tear | 1 | 0 | |
| PTRCT | 3 | 0 | |
| Small | 0 | 2 | |
| Medium | 3 | 2 | |
| Large | 0 | 2 | |
| Massive | 2 | 0 | |
