Social disparities in the use of colonoscopy by primary care physicians in Ontario

BMC Gastroenterology

Table 3 Associations between colonoscopy and PCP characteristics - Estimates from multivariate Analyses

Parameters		Risk Ratio	95% CI	P-value
Year		1.35	1.30-1.40	< 0.0001
Physician characteristics
Sex	Female	1.03	0.99-1.06	0.1354
	Male	1.00	-	-
Years of experience	< 20	0.95	0.94-0.97	< 0.0001
	>= 20	1.00	-	-
Education	IMG	0.78	0.77-0.79	< 0.0001
	CMG	1.00	-	-
Practice characteristics
Individual level
% of male patients	< 35	1.18	1.14-1.22	< 0.0001
	35-50	1.02	1.01-1.04	0.0011
	> 50	1.00	-	-
Median age	50-59	0.96	0.94-0.98	< 0.0001
	60-61	0.97	0.96-0.99	0.0002
	>= 62	1.00	-	-
% co-morbidity	< 10	0.71	0.70-0.72	< 0.0001
	10-15	0.85	0.84-0.86	< 0.0001
	> 15	1.00	-	-
Ecological level
% low income	< 10	1.14	1.12-1.15	< 0.0001
	10-19	1.13	1.11-1.14	< 0.0001
	>= 20	1.00	-	-
% of lives in rural location	< 1	1.01	0.98-1.02	0.5212
	1-3	1.03	1.02-1.05	< 0.0001
	> 3	1.00	-	-
% with less than high school education	< 20	1.28	1.26-1.30	< 0.0001
	20-24	1.08	1.06-1.09	< 0.0001
	>= 25	1.00	-	-
% of non-immigrants	< 60	0.88	0.85-0.90	0.0011
	60-79	0.95	0.94-0.97	< 0.0001
	>= 80	1.00	-	-
% of labour force	< 65	0.97	0.96-0.99	0.0005
	65-69	0.94	0.93-0.96	< 0.0001
	>= 70	1.00	-	-
% cannot speak English or French	< 2	0.92	0.89-0.94	< 0.0001
	2-3	0.96	0.94-0.98	< 0.0001
	> 3	1.00	-	-

Note: RR - rate ratio, CI - Confidence Interval, CMG - Canadian Medical Graduates, IMG - International Medical Graduates.
* Categories were selected to include approximately equal numbers of subjects.

ISSN: 1471-230X