Table 3.

Comparison of Practice Choice Models by Age and Gender groups

	All	Female all	F24–34	F35–44	F45–64	F65–74	F75plus
QOF 2006/7 total points	0.00222***	0.00236***	0.00208***	0.00257***	0.00251***	0.00228***	0.00216***
	(0.00016)	(0.00016)	(0.00016)	(0.00017)	(0.00017)	(0.00019)	(0.00021)
Distance	−0.7512***	−0.7575***	−0.7708***	−0.7499***	−0.7433***	−0.7679***	−0.8182***
	(0.0163)	(0.0165)	(0.0175)	(0.0165)	(0.0169)	(0.0178)	(0.0198)
MRS	0.00296***	0.00312***	0.00270***	0.00342***	0.00338***	0.00297***	0.00264***
	(0.00022)	(0.00023)	(0.00022)	(0.00024)	(0.00025)	(0.00026)	(0.00026)
BIC	11,597,725	5,769,627	1,054,605	1,179,122	2,110,832	719,211	701,624
McFadden R2	0.3991	0.4059	0.4005	0.4040	0.3995	0.4107	0.4336
N patients	3,350,561	1,688,960	295,329	341,336	616,961	217,072	218,176

	Male all	M25–34	M35–44	M45–64	M64–74	M75plus
QOF 2006/7 total points	0.00208***	0.00137***	0.00219***	0.00234***	0.00214***	0.00234***
	(0.00015)	(0.00018)	(0.00016)	(0.00017)	(0.00019)	(0.0002)
Distance	−0.7447***	−0.7550***	−0.7530***	−0.7396***	−0.7426***	−0.7843***
	(0.0161)	(0.0178)	(0.0162)	(0.0164)	(0.0176)	(0.0184)
MRS	0.00279***	0.00181***	0.00291***	0.00316***	0.00289***	0.00298***
	(0.00021)	(0.00024)	(0.00022)	(0.00023)	(0.00027)	(0.00026)
BIC	5,827,061	1,144,601	1,270,483	2,215,871	696,124	495,759
McFadden R2	0.3924	0.3824	0.3933	0.3907	0.4001	0.4139
N patients	1,661,426	309,837	358,003	636,112	207,247	150,139

Conditional logit models. All models contain same covariates as model in Table 2. Distance coefficient is ${\widehat{\mathit{\beta }}}_d+2{\widehat{\mathit{\beta }}}_{d^2}\overline{d}+3{\widehat{\mathit{\beta }}}_{d^3}\overline{d^2}$ where $\overline{d}$ and $\overline{d^2}$ are computed as the mean of the LSOA centroid to practice distance and squared distance for the whole sample. MRS is the coefficient on quality divided by the distance coefficient. N LSOAs: 2,870. N practices: 973. Standard errors clustered at LSOA level are in parentheses. *p < 0.05, **p < 0.01, ***p < 0.001.