Table 1. Monthly resolved atrial fibrillation (AF) diagnoses per 1000 AF diagnoses across time periods and for whole study period by country

	England		Northern Ireland		Scotland
Time period^a	Number of monthly observations	Diagnoses, median (IQR)	Number of monthly observations	Diagnoses, median (IQR)	Number of monthly observations	Diagnoses, median (IQR)
Pre-introduction	75	0.29 (0.19–0.41)	75	0.54 (0.00–0.98)	75	0.31 (0.00–0.63)
Post-introduction	162	1.15 (0.73–1.69)	162	0.91 (0.37–1.72)	120	1.14 (0.68–1.54)
Post-removal	–	–	–	–	42	0.26 (0.16–0.50)
Whole study period	237	0.74 (0.32–1.36)	237	0.76 (0.32–1.51)	237	0.64 (0.27–1.22)

a Pre-introduction of QOF was from January 2000–March 2016, introduction of the QOF was in April 2006 and removal of the QOF (in Scotland only) was in April 2016. Evidence of difference of resolved AF rates across time periods in England and Northern Ireland (Mann–Whitney tests, P<0.001) and in Scotland (Kruskal–Wallis test, P<0.001).