Table 2.

Number of opportunities for intervention identified and documented among patients presenting at GP clinics (N = 600).

Intervention	Criteria for determining patient eligibility*	Patients eligible for intervention in 2004	Documented need for intervention in 1 year (2004)	Documented need for intervention in prior 3 years (2002--2004)
Mammography for breast cancer	Biannual screening --for women aged 50 -- 69 years	142	40(28.2%)	61(43.0%)
Papanicolaou smear for cervical cancer	Screen sexually active women at least every 3 years†	399	59(14.8%)	99(24.8%)
Cholesterol measurement	Patients over 30 years of age, who either smoke, have hypertension, or diabetes mellitus.	233	94(40.3%)	157(67.4%)
Influenza vaccination	Patients over 65 years of age	114	17(14.9%)	35(30.7%)
Pneumococcal vaccination	Vaccination every 6 years of selected high risk populations Patients over 65 years of age	114	1(0.9%)	2(1.8%)
Smoking cessation	Advise smokers to quit or refer to smoking cessation counseling programs	99	3(3.0%)	19(9.2%)
‡Documented Inappropriate screening for PSA and DRE
Prostate specific antigen test for prostate cancer (PSA)	Men over 50 years of age (not required)	106	8(7.5%)	35(33.0%)
Digital rectal examination (DRE) for prostate cancer	Annual examination for men over 50 years of age (not required)	106	20(18.9%)	47(44.3%)

*Criteria used to identify opportunities for preventive intervention based on recommendations of the Canadian Task Force on the periodic Health Examination [6], the American College of Physicians [7] and the Canadian Cancer Society [8].

^†Sexual activity not defined -- all women considered

^‡The Canadian Task Force recommends that PSA and DRE not be performed