Description Usage Arguments Details References Examples
Provides magnitude-based inferences upon given proportions and sample sizes. Based upon WG Hopkins Microsoft Excel spreadsheet.
1 | prop(p1, n1, p2, n2, conf.int)
|
p1 |
proportion of group 1 |
n1 |
sample size of group 1 |
p2 |
proportion of group 2 |
n2 |
sample size of group 2 |
conf.int |
(optional) confidence level of the interval. Defaults to |
Refer to vignette for further information.
Hopkins WG. (2007). A spreadsheet for deriving a confidence interval, mechanistic inference and clinical inference from a p value. Sportscience 11, 16-20. sportsci.org/2007/wghinf.htm
1 | prop(p1 = 0.7, n1 = 25, p2 = 0.5, n2 = 20)
|
Test of Two Proportions:
diff = -0.2
chi-sq = 1.87
90% CI [-0.41, 0.04]
p value = 0.21
phi = 0.2
Magnitude-Based Inference
Unlikely Likely
"Trivial" "Substantial"
MBI (%) "24.5" "75.5"
Inference: Likely Small Effect Size.
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