replicate.prop1 {vcmeta}R Documentation

Compares and combines single proportion in original and follow-up studies

Description

This function computes confidence intervals for a single proportion from an original study and a follow-up study. Confidence intervals for the difference between the two proportions and average of the two proportions are also computed. The same results can be obtained using the meta.lc.prop1 function with appropriate contrast coefficients. The confidence level for the difference is 1 – 2*alpha, which is recommended for equivalence testing.

Usage

replicate.prop1(alpha, f1, n1, f2, n2)

Arguments

alpha

alpha level for 1-alpha confidence

f1

frequency count in original study

n1

sample size in original study

f2

frequency count in follow-up study

n2

sample size for in follow-up study

Value

A 4-row matrix. The rows are:

The columns are:

References

Bonett DG (2021). “Design and analysis of replication studies.” Organizational Research Methods, 24(3), 513–529. ISSN 1094-4281, doi:10.1177/1094428120911088.

Examples

replicate.prop1(.05, 21, 300, 35, 400)

# Should return:
#                          Estimate         SE          LL         UL
# Original:              0.07565789 0.01516725  0.04593064 0.10538515
# Follow-up:             0.09158416 0.01435033  0.06345803 0.11971029
# Original - Follow-up: -0.01670456 0.02065098 -0.05067239 0.01726328
# Average:               0.08119996 0.01032549  0.06096237 0.10143755



[Package vcmeta version 1.3.0 Index]