Question

ALL DATA IS FROM THE SAME TABLE:

Identify the type of variable (nominal, ordinal, interval, ratio) for drug. These are the drugs listed:

Buprenorphine, Fentanyl, Heroin, Hydrocodone, Hydromorphone, Methadone, Morphine, Oxycodone, Remifentanil, Tramadol (e.g., Ultram)

Identify the type of variable for abuse liability. This is the data available:

Low in relation to other opioids (for Buprenorphine), Very high (for Fentanyl), Very high (for Heroin), High (for Hydrocodone), High (for Hydromorphone), Medium (for Methadone), High (for Morphine), Very high (greater than morphine and hydrocodone) (for Oxycodone), Medium possibly due to low availability (few cases) (for Remifentanil), Medium (for Tramadol)

Identify the type of variable for elimination half-life. This is the data available:

3–48 hours variable (for Buprenorphine), 1.5–7 hours (for Fentanyl), 3 minutes (IV) (for Heroin), 3–9 hours (for Hydrocodone), 2–3 hours (for Hydromorphone), 4–6 hours or longer (for Methadone), 1.5–4.5 hours (IV and IM) for Morphine), 2–3 hours or 3–5 hours plasma after oral (for Oxycodone), 3–4 minutes (IV) (for Remifentanil), 5.1 hours (for Tramadol)

Answer 1

Nominal variables are used to name the category of variable and which are not numerical

Ordinal variables are ordered values which are not numerical

Interval scales are created by units of equal size

Ratio scales are measure scale which is quantitative in nature and allow to compare the interval of differences

Based on this definition answers are

These are the drugs listed:

Buprenorphine, Fentanyl, Heroin, Hydrocodone, Hydromorphone, Methadone, Morphine, Oxycodone, Remifentanil, Tramadol (e.g., Ultram)

They are Nominal variables

This is the data available:

Low in relation to other opioids (for Buprenorphine), Very high (for Fentanyl), Very high (for Heroin), High (for Hydrocodone), High (for Hydromorphone), Medium (for Methadone), High (for Morphine), Very high (greater than morphine and hydrocodone) (for Oxycodone), Medium possibly due to low availability (few cases) (for Remifentanil), Medium (for Tramadol)

This are Ordinal variables

This is the data available:

3–48 hours variable (for Buprenorphine), 1.5–7 hours (for Fentanyl), 3 minutes (IV) (for Heroin), 3–9 hours (for Hydrocodone), 2–3 hours (for Hydromorphone), 4–6 hours or longer (for Methadone), 1.5–4.5 hours (IV and IM) for Morphine), 2–3 hours or 3–5 hours plasma after oral (for Oxycodone), 3–4 minutes (IV) (for Remifentanil), 5.1 hours (for Tramadol)

They are Ratio varibles