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Author Question: A tamoxifen study claims that a combination of chemotherapy and the hormone therapy tamoxifen is ... (Read 85 times)

pane00

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on: May 5, 2020

Question 1

The primary reason for having a control group and a treatment group in a clinical study is
◦ to eliminate confounding variables.
◦ to combat the placebo effect.
◦ to save money.
◦ to make it easier to collect data.
◦ none of these

Question 2

A tamoxifen study claims that a combination of chemotherapy and the hormone therapy tamoxifen is more effective than tamoxifen alone in preventing breast cancer.  In the study, a group of researchers from the U.S. and Canada studied 1477 postmenopausal women with early-stage breast cancer.  The women were randomly assigned to one of three study groups.  Group A (361 patients) received tamoxifen alone on a daily basis for five years.  Group B (566 patients) received chemotherapy and tamoxifen for six months, and then completed five years of tamoxifen treatment.  Group C (550 patients) received chemotherapy alone for six months followed by five years of tamoxifen treatment.  All 1477 patients knew which treatment they were receiving.

This study can best be described as a
◦ randomized controlled experiment.
◦ survey using quota sampling.
◦ survey using stratified sampling.
◦ census.
◦ survey using simple random sampling.
Excursions in Modern Mathematics ¦ Tannenbaum ¦ 9th Edition
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Marked as best answer by pane00 on May 5, 2020

zogaridan

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Reply #1 on: May 5, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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pane00

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Reply 2 on: May 5, 2020
Great answer, keep it coming :)

ryhom

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Reply 3 on: Yesterday
Gracias!

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