Table 1.

Characteristics of practices by practice growth between 2013 and 2018^a

Characteristic	Practices with no growthb (n = 5106)	Practices with growthc (n = 644)	P-value for difference
Mean list size, n
2013	8322	8722
2018	8627	14 087
Mean increase in list size 2013–2018, %	3.8	69.6
Aged ≥75 years, mean %
2013	7.9	6.3	<0.001
2018	8.3	6.3	<0.001
Aged <5 years, mean %
2013	6.0	6.5	<0.001
2018	5.5	6.0	<0.001
Male, mean %
2013	49.7	49.7	0.30
2018	49.9	50.1	0.89
Longstanding illness, mean %
2013	53.8	51.5	<0.001
2018	54.1	51.1	<0.001
Index of Multiple Deprivation 2015 score	22.2	24.6	<0.001
Rural, %	16.8	7.3	<0.001
Region, %
London and South	39.1	53.9
Midlands	30.5	24.8
North	30.5	21.3	<0.001

^aFor practices with >3000 patients in 2013, n = 5750, excluding practices with fall in patient numbers of >20%.

^bPractices whose registered population in 2018 was +/−20% inclusive of that of 2013.

^cPractices whose registered population increased by >20% and >2000 patients between 2013 and 2018.