Question 71 (part 2) · LEK · Basics of medical statistics
A study was conducted on a representative group of 300 overweight people, detecting the presence of 100 people with high recreational physical activity and 200 people with low recreational physical activity in this group. In the data analysis an assessment of the statistical significance of the difference between the values of the body mass index (BMI) measured in both groups was planned. Obtaining a conclusive result in this case requires the:
- A. use of the chi-square test after the diagnosis of normal distribution.
- B. use of the Student's t-test having carried out the Shapiro-Wilk test.
- C. calculation of the odds ratio, with a 95% confidence interval.
- D. use of the Student's t-test having carried out the Mann-Whitney test.
- E. use of Pearson’s or Spearman correlation analysis.
Hint
BMI is a continuous variable compared between two independent groups; what must be checked before using a parametric test?
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