Question: A study is started to evaluate two treatments for breast cancer. Women with stage 1 breast cancer are randomized to receive either lumpectomy alone (tumor

A study is started to evaluate two treatments for breast cancer. Women with stage 1 breast cancer are randomized to receive either lumpectomy alone (tumor removal) or lumpectomy with breast radiation. Women are followed for five years to determine if there are any differences in breast cancer recurrence and survival.

Type of Study:

Study Population:

Exposure:

Outcome/End Point:

Comparison:

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