Answer:
1. Odd ratio:
- Advantages: May be reported in cohort studies, case-control designs and clinical trials.
- Disadvantages: Bad estimation of the risk in situations where the initial risk is high. Difficult to interpret.
2. Relative risk:
- Advantages: Easy to interpret.
- Disadvantages: Not available for case-control designs. Adjustment of the covariance is a hard task.
Explanation:
An odds ratio is a statistical measure used to compare the relative odds of the event/outcome (disease or disorder) with respect to a given variable of interest (e.g. medical history). An odd ratio may be interpreted as though it was a relative risk and therefore this value may lead to error. On the other hand, a relative risk (RR) is a statistic that measures the ratio between the likelihood of an event in an exposed group (disease or disorder) with respect to the likelihood of an event in an unexposed comparison group. Both statistics compare the relative probability of an event/outcome between two comparison groups. The relative risk can not be used in case-control designs because information about the total number of exposed people is not available.
Strong or highly reactive
Answer:
The exposure may be risk factor.
Explanation:
Given
Required
The odd ratio
First, we calculate the odds of exposure using:
For cases, we have:
For controls, we have:
So, the odds' ratio is:
Conclusion about the odds' ratio
The calculated ratio is greater than (and also far from) 1.
This implies that there is a greater exposure than the controls.
So, we can conclude that the exposure may be risk factor.
Answer:
Its smaller
Explanation:
Im sorry this is totally not helpful ;)
The muscles of her casted arm atrophied due to lack of use. This may explain why the differences between arms.
