b2p_text | R Documentation |
Output two-proportion design text. The power or sample size (per group)
will be calculated depending on the arguments given (i.e., either
n1
or power
should be NULL
).
b2p_text( p1, p2, n1 = NULL, n2 = n1, power = NULL, alpha = 0.025, r = 0.5, arms = c("Experimental", "Control"), type = c("fisher", "UMPU", "approx.cor", "approx.unc"), cont.cor = TRUE )
p1, p2 |
the success rates for both groups ( |
n1, n2 |
sample size for both groups |
power, alpha |
the power and one-sided significance level (type I error) |
r |
proportion assigned to group 1 |
arms |
labels for the two groups |
type |
the type of test used to calculate power, see
|
cont.cor |
logical; if |
A character string describing the two-stage design with
attr(., "design")
containing the design.
b2p
; b2n
Other designs:
bin1samp_text()
,
mtd_text()
,
simon_text()
,
twostg_text()
## basic usage (compare to a simon design) p1 <- 0.5 p2 <- 0.3 b2p_text(p1, p2, power = 0.8) b2p_text(p1, p2, n1 = 103) b2p_text(p1, p2, power = 0.8, r = 2/3) ## Not run: ## use cat and/or strwrap for improved formatting and writing cat(strwrap(b2p_text(p1, p2, power = 0.8), width = 80), sep = '\n') cat(b2p_text(p1, p2, power = 0.8), file = '~/simon_design.txt') ## End(Not run)
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