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Table 1 Reductions in numbers of knee arthroscopies for age 50+ between 2011 and 2015 by district, public and private hospitals, NSW

From: A controlled before-after study to evaluate the effect of a clinician led policy to reduce knee arthroscopy in NSW

NSW district Arthroscopy surgeries, 12 months to December 31, 2011 Arthroscopy surgeries, 12 months to December 31, 2015b Reduction Reduction percentage (%) 95% CI
Central Coast 792 430 362 46% 42% 49%
Far West 31 41 −10 −32% −14% −50%
Hunter New England 2021 1554 467 23% 21% 25%
Illawarra Shoalhaven 497 370 127 26% 22% 29%
Mid North Coast 735 516 219 30% 26% 33%
Murrumbidgee 438 383 55 13% 9% 16%
Nepean Blue Mountains 601 354 247 41% 37% 45%
Northern NSW 476 409 67 14% 11% 17%
Northern Sydney 2012 905 1107 55% 53% 57%
South Eastern Sydney 2133 1187 946 44% 42% 46%
South Western Sydney 899 374 525 58% 55% 62%
Southern NSW 133 124 9 7% 2% 11%
Sydney 659 325 334 51% 47% 55%
Western NSW 390 254 136 35% 30% 40%
Western Sydney 841 541 300 36% 32% 39%
NSW overall 12,703 7786 4917 39% 38% 40%
  1. aFigures included knee arthroscopies in both public and private hospitals; St Vincent district data is not presented due to confidentiality issue
  2. bDue to incomplete private hospital data after July 1, 2015 at the time of this analysis, the number of knee arthroscopy in private hospitals during 2015 is underestimated