co.transfer
data frame has 7 rows and 2 columns. Seven smokers with
chickenpox had their levels of carbon monoxide transfer measured on entry
to hospital and then again after 1 week. The main question being whether
one week of hospitalization has changed the carbon monoxide transfer factor.
co.transfer
entry
week
Ellis, M.E., Neal, K.R. and Webb, A.K. (1987) Is smoking a risk factor for pneumonia in patients with chickenpox? British Medical Journal, 294, 1002.