Table 1

Unadjusted measures by health centre SDI quartile

	# of health centres	Q1 (lower social deprivation	Q2	Q3	Q4 (higher social deprivation)	Overall	Q4–Q1
Process measures (%)
Body mass index screening and follow-up plan (adults)	1160	60.19	64.55	63.35	62.80	62.71	2.69
Cervical cancer screening	1160	50.63	50.39	48.72	53.36	50.75	2.73*
Childhood immunisation status	994	31.53	34.83	35.95	38.29	35.15	6.76**
Colorectal cancer screening	1156	42.95	38.54	35.23	37.89	38.66	−5.08**
Coronary artery disease: lipid therapy	1009	79.98	79.82	80.41	80.68	80.21	0.70
Dental sealants for children 6–9 years	668	53.11	50.51	47.89	48.97	50.12	−4.15*
Early entry into prenatal care	796	82.95	76.99	74.14	75.19	77.32	−7.77***
Ischaemic vascular disease: use of aspirin or another antiplatelet	1068	78.98	77.33	77.41	78.23	77.99	−0.75
Screening for depression and follow-up plan	1160	65.96	66.54	65.97	63.91	65.62	−2.05
Tobacco use screening and cessation intervention	1160	88.10	87.51	84.67	85.58	86.47	−2.52**
Use of appropriate medications for asthma	994	84.60	84.47	85.47	85.92	85.12	1.32
Weight assessment and counselling for nutrition and physical activity for children and adolescents	1120	57.81	60.78	61.45	63.48	60.84	5.63**
Outcome measures (%)
Controlling high blood pressure (<140/90 mm Hg)	1160	65.51	62.42	60.18	60.15	62.08	−5.36***
Diabetes: haemoglobin A1c poor control (>9)	1154	29.90	33.04	35.61	35.29	33.45	5.38***
Low birth weight (% of live births)	1160	7.46	8.45	8.68	8.93	8.46	1.47**

*P<0.05, **p<0.01, ***p<0.001.
SDI, Social Deprivation Index.