folate data frame has 22 rows and 2 columns.
It contains data on red cell folate levels in patients receiving three
different methods of ventilation during anesthesia.
This data frame contains the following columns:
a numeric vector, folate concentration (microgram per liter).
a factor with levels
N2O+O2,24h: 50% nitrous oxide and 50% oxygen, continuously for
N2O+O2,op: 50% nitrous oxide and 50% oxygen, only during operation;
O2,24h: no nitrous oxide but 35%–50% oxygen for 24 hours.
D.G. Altman (1991), Practical Statistics for Medical Research, Table 9.10, Chapman & Hall.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.