Table 1.

Mean rates (per 1000 target list population) by exposure variables below and above median values.

				Angiography procedures		Coronary disease found at angiography		Appropriate angiography
Variable	Median	Interquartile range	Cut-off (n practices)	Mean	95% CI	Mean	95% CI	Mean	95% CI
Percentage aged ≥65 years	10.3	7.7 to 13.3	≤10.3 (80)	2.44	2.06 to 2.82	1.81	1.47 to 2.15	1.32	0.33 to 1.57
			>10.3 (79)	2.97	2.54 to 3.38	2.13	1.81 to 2.45	1.48	0.39 to 1.74
Distance to tertiary centre in km	4.9	3.2 to 6.0	≤4.9 (72)	3.26	2.88 to 3.63	2.33	2.00 to 2.65	1.70	0.45 to 1.97
			>4.9 (71)	2.76	2.36 to 3.16	2.04	1.70 to 2.37	1.41	0.37 to 1.67
Percentage with a South Asian name	17.0	7.0 to 34.0	≤17 (80)	2.45	2.06 to 2.84	1.79	1.48 to 2.10	1.31	0.31 to 1.54
			>17 (79)	2.95	2.53 to 3.36	2.16	1.80 to 2.51	1.49	0.40 to 1.76
Carstairs deprivation score	5.2	−2.9 to 15.2	≤5.2 (80)	2.50	2.09 to 2.91	1.82	1.47 to 2.16	1.38	0.38 to 1.65
			>5.2 (79)	2.86	2.46 to 3.25	2.09	1.77 to 2.40	1.39	0.35 to 1.64
Nitrate prescribing in primary care	216	148 to 288	≤216 (75)	2.14	1.82 to 2.46	1.46	1.20 to 1.72	1.02	0.22 to 1.23
			>216 (74)	3.42	2.96 to 3.87	2.55	2.17 to 2.92	1.80	0.53 to 2.09
Myocardial infarction admissions	1.6	0.8 to 2.3	≤1.6 (80)	2.08	1.73 to 2.43	1.49	1.21 to 1.76	1.07	0.24 to 1.30
			>1.6 (80)	3.30	2.89 to 3.71	2.43	2.07 to 2.78	1.73	0.47 to 2.00