90th/10th percentile ratios for directly age-sex standardised rates of subacromial decompression by clinicalcommissioning group, England, 2007/2008 to 2016/2017
| Year | 90th percentile | 10th percentile | 90th/10th ratio (95% CI*) |
| 2007/08 | 53 | 15 | 3.6 (2.2 to 6.1) |
| 2008/09 | 55 | 16 | 3.3 (2.1 to 5.2) |
| 2009/10 | 72 | 27 | 2.6 (2.0 to 3.5) |
| 2010/11 | 87 | 33 | 2.6 (1.9 to 3.6) |
| 2011/12 | 89 | 36 | 2.5 (2.0 to 3.1) |
| 2012/13 | 90 | 33 | 2.7 (2.0 to 3.7) |
| 2013/14 | 88 | 34 | 2.6 (2.1 to 3.3) |
| 2014/15 | 89 | 33 | 2.7 (2.0 to 3.7) |
| 2015/16 | 81 | 33 | 2.5 (1.4 to 4.3) |
| 2016/17 | 83 | 30 | 2.7 (2.2 to 3.4) |
*Confidence intervals for rate ratios.61