Fisher's exact test
Fisher's exact test
Interpretar el estudio y extraer conclusiones de los datos
Sesgo, confusión y amenazas a la validez
Causalidad
Flashcards
Fisher's exact test
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Preguntas
Preguntas del estilo USMLE® Step 1
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Preguntas del estilo USMLE® Step 2
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An investigator is conducting a pilot study to evaluate the effects of Drug X and Drug Y on treating leukemia. Results are shown below in the following 2 by 2 contingency table:
After completing the study, the investigator discovers that the percentage of patients who were cured after taking Drug X is much higher than that of patients taking Drug Y. Which of the following statistical tests was most likely used to draw this conclusion?
| Cured | Not Cured | Total | |
| Drug X | 9 | 11 | 20 |
| Drug Y | 3 | 18 | 21 |
| Total | 12 | 29 | 41 |
After completing the study, the investigator discovers that the percentage of patients who were cured after taking Drug X is much higher than that of patients taking Drug Y. Which of the following statistical tests was most likely used to draw this conclusion?
Aspectos destacados
en inglés
Fisher's exact test is a statistical test that uses a 2x2 categorical data design. It is used to determine whether the proportions of two categorical variables are different from each other. It is a more powerful alternative to the chi-squared test, and is particularly useful when there are small sample sizes.