neuropathy | 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. \Sexpr[results=rd]{tools:::Rd_expr_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")
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