3.1 Quick revision

In a study of obstructive sleep apnoea (OSA) in adults with Down Syndrome (de Carvalho et al. 2020), \(n = 60\) adults underwent a sleep study. The data are shown in Fig. 3.1. (REI is the Respiratory Event Index; REI under \(5\) refers to no sleep apnoea; REI of \(30\) or over refers to severe sleep apnoea.)

How would you classify the variable Age?
1. Qualitative nominal
2. Qualitative ordinal
3. Quantitative discrete
4. Quantitative continuous
How would you classify the variable Gender?
1. Qualitative nominal
2. Qualitative ordinal
3. Quantitative discrete
4. Quantitative continuous
How would you classify the variable BMI?
1. Qualitative nominal
2. Qualitative ordinal
3. Quantitative discrete
4. Quantitative continuous
How would you classify the variable REI?
1. Qualitative nominal
2. Qualitative ordinal
3. Quantitative discrete
4. Quantitative continuous

FIGURE 3.1: The obstructive sleep apnoea 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.