Question

An investigator wants to assess whether smoking is a risk factor for pancreatic cancer. Electronic medical records

at a local hospital will be used to identify fifty patients with pancreatic cancer. One hundred patients who are similar but free of pancreatic cancer will also be selected. Each participant’s medical record will be analyzed for smoking history. Identify the type of study proposed and indicate its specific strengths and weaknesses.

Type of study:

Strengths:

Weaknessess:

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