4.1 Quick revision

A study of obstructive sleep apnoea (OSA) in adults with Down Syndrome (de Carvalho et al. 2020) had \(n = 60\) adults (\(27\) females; \(33\) males) undergo a sleep study. The data are shown in Fig. 4.2. (REI is the Respiratory Event Index; an REI under \(5\) refers to no sleep apnoea; an REI of \(30\) or over refers to severe sleep apnoea.)

Which of these would be an inappropriate numerical summary for the age of the participants? Median, mean, odds, or standard deviation.
What might be an appropriate way to numerically describe the amount of variation in the ages of participants?
What might be an appropriate way to numerically describe the average Respiratory Event Index (REI) of participants?
What might be an appropriate way to numerically describe the gender of the participants?
In the sample of \(n = 60\), what percentage of individuals are females?
In the sample of \(n = 60\), what are the odds that an individual is female?
Use the jamovi output in Fig. 4.1 to find the mean of Gender, and explain what this mean.

FIGURE 4.1: A numerical summary of the OSA data: jamovi

FIGURE 4.2: The Obstructive Sleep Apnoea (OSA) data set

References

de Carvalho AA, Amorim FF, Santana LA, de Almeida KJQ, Santana ANC, Neves F de AR. STOP-Bang questionnaire should be used in all adults with Down Syndrome to screen for moderate to severe obstructive sleep apnea. PloS ONE. 2020;15(5):e0232596.