RD: Risk Difference between two groups

In sasLM: 'SAS' Linear Model

Risk Difference between two groups

Description

Risk (proportion) difference between two groups

Usage

  RD(y1, n1, y2, n2, conf.level=0.95)

Arguments

y1	positive event count of test (the first) group
n1	total count of the test (the first) group
y2	positive event count of control (the second) group
n2	total count of control (the second) group
conf.level	confidence level

Details

It calculates risk difference between the two groups. No continuity correction here. If you need percent scale, multiply the output by 100.

Value

The result is a data.frame.

p1	proportion from the first group
p2	proportion from the second group
RD	risk difference, p1 - p2
SE	standard error of RD
lower	lower confidence limit of RD
upper	upper confidence limit of RD

Author(s)

Kyun-Seop Bae [e-mail]

See Also

RR, OR, RDmn1, RRmn1, ORmn1, RDmn, RRmn, ORmn

Examples

  RD(104, 11037, 189, 11034) # no continuity correction

sasLM documentation built on Nov. 19, 2023, 5:12 p.m.