ISwR (version 1.0-6)

ashina: Ashina's crossover trial

Description

The ashina data frame has 16 rows and 3 columns. It contains data from a crossover trial for the effect of an NO synthase inhibitor on headaches. Visual analog scale recordings of pain level were made at baseline and at five time points after infusion of the drug or placebo. A score was calculated as the sum of the differences from baseline. All patients received both treatment and placebo in randomized order.

source

Original data

References

M.Ashina et al. (1999), Lancet 353, pp. 287--289

Examples

data(ashina)
plot(vas.active~vas.plac,pch=grp,data=ashina)
abline(0,1)