Problem 28BB
indicate whether the observational study used is cross-sectional, retrospective, or prospective.
Drinking and Driving Study In order to study the seriousness of drinking and driving, a researcher obtains records from past car crashes. Drivers are partitioned into a group that had no alcohol consumption and another group that did have evidence of alcohol consumption at the time of the crash.
Problem 28BB
Answer:
Step1 of 3:
We have In order to study the seriousness of drinking and driving, a researcher obtains records from past car crashes. Drivers are partitioned into a group that had no alcohol consumption and another group that did have evidence of alcohol consumption at the time of the crash.
Step2 of 3:
We need to indicate whether the observational study used is cross-sectional, retrospective, or prospective.
Step3 of 3:
Let us understand what is cross sectional, retrospective and prospective
Consider,
1).Cross sectional: A cross-sectional study (also known as a cross-sectional analysis, transversal study, prevalence study) is a type of observational study that analyzes data collected from a population, or a representative subset, at a specific point in time that is, cross-sectional data.
2).Retrospective: The researcher looks at historical data for a group. Some of the people in this group have developed the disease, and some have not. This can result in finding out who has the disease and when they developed it.
3).Prospective: None of the subjects have the disease (or other outcome) being measured when the study commences data analysis happens after a period of time has elapsed.
This is a “Retrospective study” because, it looks back in time to a similar group of people (people involved in car crashes) to see how different exposures (drinking vs. no drinking) affected the overall outcome.
