neuropathy {coin} | R Documentation |
The logarithm of the ratio of pain scores measured at baseline and after four weeks in a control group and a treatment group.
neuropathy
A data frame with 58 observations on 2 variables.
pain
pain scores: ln(baseline / final).
group
a factor with levels "control"
and "treat"
.
Data from Conover and Salsburg (1988, Tab. 1).
Conover, W. J. and Salsburg, D. S. (1988). Locally most powerful tests for detecting treatment effects when only a subset of patients can be expected to “respond” to treatment. Biometrics 44(1), 189–196. doi: 10.2307/2531906
## Conover and Salsburg (1988, Tab. 2) ## One-sided approximative Fisher-Pitman test oneway_test(pain ~ group, data = neuropathy, alternative = "less", distribution = approximate(nresample = 10000)) ## One-sided approximative Wilcoxon-Mann-Whitney test wilcox_test(pain ~ group, data = neuropathy, alternative = "less", distribution = approximate(nresample = 10000)) ## One-sided approximative Conover-Salsburg test oneway_test(pain ~ group, data = neuropathy, alternative = "less", distribution = approximate(nresample = 10000), ytrafo = function(data) trafo(data, numeric_trafo = consal_trafo)) ## One-sided approximative maximum test for a range of 'a' values it <- independence_test(pain ~ group, data = neuropathy, alternative = "less", distribution = approximate(nresample = 10000), ytrafo = function(data) trafo(data, numeric_trafo = function(y) consal_trafo(y, a = 2:7))) pvalue(it, method = "single-step")