Table 2.

Participation in DES18 or DIS: balanced panel, 2006‐2007 to 2015‐2016^a

	Practice‐years	Percent	Mean Dementia Register
DES18 participationb
Years of participation: 3	56 500	79.11	42.67
Y/Y/Y	56 500	79.11	42.67
Years of participation: 2	11 380	15.93	29.29
Y/Y/N	1280	1.79	33.08
Y/N/Y	1420	1.99	28.31
N/Y/Y	8680	12.15	28.89
Years of participation: 1	2450	3.43	25.54
Y/N/N	440	0.62	31.82
N/Y/N	700	0.98	22.85
N/N/Y	1310	1.83	23.63
No participation	1090	1.53	31.09
N/N/N	1090	1.53	31.09
Total	71 420	100	39.75
DIS participation
No	17 190	24.07	34.45
Yes	54 230	75.93	41.43
Total	71 420	100	39.75

Abbreviations: DES18, Directed Enhanced Service 18; DIS, Dementia Identification Scheme.

^aAs this is a balanced panel, the number of practices contributing data can be inferred by dividing practice‐years by 10.

^bParticipation is indicated by Yes (Y), non‐participation by No (N).