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A case-control study of cancer screening efficacy seeks to compare cases and controls for the receipt of only those tests done when there were no symptoms or signs of the cancer that is the target of the screening. We conducted a study to determine the accuracy of Kaiser Permanente Northwest (KPNW) medical records in identifying the reason(s) underlying testing for prostate-specific antigen (PSA)...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.