Table I.
Demographics of the arthroscopic rotator cuff repair (RCR) and open RCR groups
| Arthroscopic RCR (n = 200) | Open RCR (n = 200) | p-value* | |
|---|---|---|---|
| Male (n, %) | 99 (49) | 102 (51) | 0.765 |
| Mean age at surgery (yrs) (range) | 61 (34 to 90) | 61 (26 to 87) | 0.965† |
| Estimated duration of symptoms‡ (days) (range) | 310 (18 to 2920) | 356 (6 to 2903) | 0.801† |
| Patient awareness of precipitating event (n, %) | 186 (93) | 184 (92) | 0.849 |
| Dominant/affected shoulder (%) | |||
| R/R | 127/137 (93) | 100/118 (85) | 0.065 |
| L/L | 12/63 (19) | 33/82 (40) | 0.011 |
| R/L | 10/137 (7) | 18/118 (15) | 0.068 |
| L/R | 51/63 (81) | 49/82 (60) | 0.011 |
| Patients with shoulder related insurance claims (n, %) | 46 (23) | 45 (23) | 0.981 |
| Pre-operative tear size (cm2) (range) | 4.4 (0.25 to 16) | 3.8 (0.50 to 16) | 0.083† |
* chi-squared test, unless otherwise stated † Mann-Whitney rank sum test ‡ approximately 36% of these patients named a specific date of their injury, 42% named the month and year and 22% estimated the number of years they had their shoulder problem