Table 2.

Association Between the Perception of Any Effect of Guidelines on Practice and Being a Consistent Nonscreener, Variable Screener, and Consistent Screener of Prostate-Specific Antigen

How Large an Effect Does Your Use of Formal, Written Practice Guidelines Such as Those Generated by Physician Organizations, Insurance Companies or HMOs, or Government Agencies Have on Your Practice of Medicine?	Unadjusted Model			Multivariate Model
	OR	95% CI	P-value	OR	95% CI	P-value
Consistent Nonscreener (n = 517)	1.38	0.94-2.02	0.10	1.16	0.79-1.71	0.43
Variable Screener (n = 1,061)	1.76	1.27-2.42	0.001	1.73	1.25-2.38	0.001
Consistent Screener (n = 2,332)	0.56	0.42-0.74	0.0001	0.61	0.47-0.79	0.0001

Note: HMO = health maintenance organization; OR = odds ratio; CI = confidence interval. Each model compares physicians with a specific screening pattern against the other 2 groups of physicians. Models are adjusted for physician age; sex; race; Latino ethnicity; specialty; board certification status; foreign graduate status; practice type; number of years in practice; salaried status; income earned in 1997; proportion of Medicare, Medicaid, and managed care as a source of revenue; and charity care provided in the previous month.