Biostatistics & Study Design USMLE Step 1 Practice Question
A 58 year old man comes to clinic for evaluation of intermittent hematochezia and a 4 kg unintentional weight loss. Before ordering colonoscopy, investigators studying a fecal immunochemical test note that the pretest probability of colorectal cancer in patients with this presentation is 20%. The team wants to convert this probability into pretest odds before applying a likelihood ratio. Which of the following is the correct pretest odds for disease in this patient population?
Answer choices
- A0.25Correct answer
- B4.00
- C0.20
- D0.80
- E1.20
- F0.16
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