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. 2023 Mar 22;380:e072098. doi: 10.1136/bmj-2022-072098

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY. No commercial re-use. See rights and permissions. Published by BMJ.

This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 4.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is properly cited. See: http://creativecommons.org/licenses/by/4.0/.

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Fig 3 — Multiple group interrupted time series analysis comparing treatment related indicators between Scotland and England. Vertical reference line indicates the first observation after withdrawal of the Quality and Outcomes Framework (QOF) at the end of the 2015-16 financial year in Scotland. The counterfactual for Scotland is based on Scottish prior trends and English immediate and post-QOF withdrawal effects. Regression was performed with Newey-West standard errors, and lag(0). CHD=coronary heart disease; COPD=chronic obstructive pulmonary disease; TIA=transient ischaemic attack