PHC FA Q

143 cards

• Researchers describe several patients with a rare disease, with no comparison group. What design?
• Disease status and risk factors are measured at the same time in a population. What design and measure?
• Investigators start with patients who have COPD and controls without COPD, then look backward for smoking. What design/measure?
• Investigators classify people by smoking exposure and follow them for COPD. What design/measure?
• Researchers use old medical records to compare exposed and unexposed groups and subsequent disease. What type of cohort?

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