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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