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Author Question: Determine what type of observational study is described. Explain.Researchers wanted to determine ... (Read 220 times)

tuffie

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on: Jan 16, 2020
Determine what type of observational study is described. Explain.

Researchers wanted to determine whether there was an association between city driving and stomach ulcers. They selected a sample of 900 young adults and followed them for a twenty-year period. At the start of the study none of the participants was suffering from a stomach ulcer. Each person kept track of the number of hours per week they spent driving in city traffic. At the end of the study each participant underwent tests to determine whether they were suffering from a stomach ulcer.  The researchers analyzed the results to determine whether there was an association between city driving and stomach ulcers.
◦ cohort; Individuals are observed over a long period of time.
◦ retrospective; Individuals are asked to look back in time.
◦ cross-sectional; Information is collected at a specific point in time.
Statistics: Informed Decisions Using Data ¦ Sullivan ¦ 5th Edition
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Marked as best answer by tuffie on Jan 16, 2020

sultansheikh

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Reply #1 on: Jan 16, 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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tuffie

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Reply 2 on: Jan 16, 2020
Great answer, keep it coming :)

frankwu0507

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Reply 3 on: Yesterday
Gracias!

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