Question

Can cell phone use lead to brain cancer?


Which technique would represent the MOST cost effective approach to conduct an investigation of this research question?
Responses

A Do a literature review on previous studies done on this topic.Do a literature review on previous studies done on this topic.

B Ask friends and family that use cell phone if they have brain cancer.Ask friends and family that use cell phone if they have brain cancer.

C Call the cell phone companies and talk to a customer service representative.Call the cell phone companies and talk to a customer service representative.

D Hire a research firm to write, distribute, collect, and analyze results of a national survey.

Answer 1

A — Do a literature review on previous studies done on this topic.

Reason: It’s the least expensive and quickest way to assess existing evidence (cohort/case‑control studies, meta‑analyses). If gaps remain after the review, you can then plan more costly primary studies.