Table 9.

Difference between capitation and average cost for selected patient groups.

Patient type	N patients	% of sample	Mean cost	Average capitation from model minus mean cost
				Age/gender mean	QOF indicators	QOF count	EDC indicators	EDC count	ACG
Female, 20–29, deprivation decile 10, no QOF disease	546	0.64%	145	31	14	−13	21	14	33
Female, 20–29, deprivation decile 10, no EDC disease	198	0.23%	103	73	60	43	25	−40	39
Female, 50–59, no QOF disease	3787	4.41%	175	159	−15	46	42	51	84
Female, 50–59, QOF hypertension	439	0.51%	350	−16	−19	38	−10	26	11
Female, 50–59, no EDC disease	1003	1.17%	91	243	79	133	−25	78	100
Female, 50–59, EDC hypertension	113	0.13%	155	179	96	70	45	−15	88
Male, 40–49, QOF asthma	270	0.31%	270	−101	−63	−6	−62	−29	−53
Male, 40–49, QOF asthma and hypertension	21	0.02%	548	−379	−231	−129	−258	−215	−250
Male, 40–49, EDC asthma	188	0.22%	102	67	46	37	31	11	46
Male, 40–49, EDC asthma and hypertension	10	0.01%	155	14	13	22	6	24	24
Male, 50–59, QOF obesity & diabetes	49	0.06%	644	−363	−213	−77	−213	−171	−231
Male, 70–79, QOF hypertension & CHD	110	0.13%	755	−74	−83	66	−61	−3	3
Male, 70–79, QOF hypertension, CHD & CKD	30	0.03%	983	−302	−27	73	16	−29	−96
Male, 20–29, EDC dermatitis/eczema & anxiety/neuroses	28	0.03%	106	−16	−11	−6	−7	15	2
Female, 40–49, EDC IBS	63	0.07%	122	118	75	58	43	0	66
Female, 40–49, EDC IBS & depression	28	0.03%	201	39	20	24	−4	−8	26
Female, 20–29, deprivation decile 10, ACG category: No Diagnosis or Only Unclassified Diagnosis	106	0.12%	131	45	35	46	19	45	−36
Male, 70–79, ACG category: Chronic Medical: Stable	161	0.19%	620	61	150	158	−17	92	33

Notes. Capitation payments calculated from age/gender only are the age/gender means. All other capitation payments are calculated from log Poisson models containing age/gender, deprivation decile, practice effect and morbidity, but with average practice effects replacing the estimated effect of the patient's practice. Capitation payments calculated from OLS models give similar results. IBS: irritable bowel syndrome.