A trial of 12,000 adults with chronic low back pain compares a new exercise app with standard counseling. Mean pain score improves by 0.2 points on a 10 point scale in the app group, with p = 0.001. Patients report that a change of at least 1.5 points is needed to feel meaningfully better. Which conclusion is most appropriate?
- A)The intervention is neither clinically nor statistically significant
- B)The p value proves the effect is important to patients
- C)The intervention is clinically and statistically significant
- D)The intervention is statistically significant but may not be clinically meaningfulGABARITO
- E)The intervention is clinically significant but not statistically significant
Explicação
The very small p value indicates that the observed difference is unlikely to be due to chance alone, so the result is statistically significant. However, the effect size of 0.2 points is far below the improvement patients consider meaningful. Statistical signi... Ver explicação completa e trilha adaptativa →