# EvaLumina sample bank.
# Lines that start with # are notes for you: they are never printed.

[ra:1.2 | nivel:recordar]
1. Which measure of central tendency is least affected by extreme values?
- The mean
* The median
- The mode
- The range

[ra:1.1 | nivel:recordar | concepto:longitudinal-design | dificultad_estimada:0.7]
2. A study that follows the same participants over several years is called:
* Longitudinal
- Cross-sectional
- Case-control
- Ecological

[ra:1.1 | nivel:aplicar | concepto:longitudinal-design | variante:2]
3. The blood pressure of 200 people is measured every year for a decade. What design is it?
* Longitudinal
- Cross-sectional
- Case-control
- Ecological

[ra:1.2 | nivel:recordar | orden:fijo]
4. Which of these is a measure of dispersion?
- The standard deviation
- The range
- The variance
* All of the above

[ra:1.2 | nivel:analizar | estado:piloto]
5. Consider the following statements about a p-value below 0.05:
1. It proves the null hypothesis is false.
2. It indicates a result that is statistically significant at 5%.
3. It measures the size of the effect.
Which are correct?
* 2 only
- 1 and 2 only
- 2 and 3 only
- 1, 2 and 3

[orden:fijo]
@block A clinical trial randomly assigned 120 patients with hypertension to a new drug or to placebo.
The main outcome was systolic pressure at 12 weeks.

[ra:1.3 | nivel:recordar]
6. What type of study is it?
* Experimental
- Observational
- Ecological

[ra:1.3 | nivel:aplicar]
7. What is random assignment for?
* To make the groups comparable, including in what was not measured
- To make the study double-blind
- To increase the sample size
@end

[ra:1.3 | nivel:analizar | puntaje:4]
8. Explain the difference between statistical significance and clinical relevance.
#6
> A result can be unlikely to be due to chance and still be too small to matter to the patient.