Table 2.

Odds Ratio for Eligible Patients Being Screened, All Variables Initially Considered Likely to Predict Screening^*

	Odds Ratio	Standard Error	z	P>|z|	95% Confidence Interval
Both reminders	1.86	0.39	2.94	.003	1.23 to 2.82
Computer reminders	2.66	0.72	3.63	<.001	1.57 to 4.53
Patient reminders	1.95	0.37	3.53	<.001	1.35 to 2.80
FP female	1.12	0.17	0.72	.47	0.83 to 1.50
FP number in practice	0.97	0.02	−1.35	.18	0.94 to 1.01
FP year graduation	1.01	0.01	1.35	.18	0.99 to 1.03
FP tenths worked	0.98	0.03	−0.54	.59	0.92 to 1.05
FP mean number patients per day	1.00	0.001	−0.59	.56	1.00 to 1.00
FP proportion patients age 50+	27.3	1.83	1.53	.13	0.75 to 10.14
FP prior screen rate	4.38	2.46	2.63	.01	1.46 to 13.18
FP fee to patient	1.00	0.01	−0.01	.99	0.98 to 1.02
Patient age	1.00	0.004	−0.82	.41	0.99 to 1.00
Patient “regular”	2.04	0.27	5.44	<.001	1.58 to 2.64
Patient number of visits	1.23	0.05	5.44	<.001	1.14 to 1.32
Patient non-European ethnicity	1.45	0.20	2.70	.007	1.11 to 1.89

Logistic regression with clustering by FP, n=4,081.

^*The number of patients included in this regression is reduced because of 1,547 patients missing ethnicity data.

FP, family practitioner.