128 . Annex D provides details of a range of checks and sensitivity analyses that we conducted to ensure that the findings from this matched counterfactual analysis were robust to changes in our approach . The datafile associated with this report contains the estimated changes in all gaps since 2016 , across all 1,000 matched counterfactual groups .
This report is an official statistic which falls under the Code of Practice for Statistics . We welcome any feedback on our approach . Please email any comments to Stanley Rudkin at official . statistics @ officeforstudents . org . uk .
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