ORmn1: Odds Ratio and Score CI of two groups without strata by the...

In sasLM: 'SAS' Linear Model

Odds Ratio and Score CI of two groups without strata by the MN method

Description

Odds ratio and its score confidence interval of two groups without stratification

Usage

  ORmn1(y1, n1, y2, n2, conf.level=0.95, eps=1e-8)

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
eps	absolute value less than eps is regarded as negligible

Details

It calculates odds ratio and its score confidence interval of the two groups. The confidence interval is asymmetric, and there is no standard error in the output. This does not support stratification. This implementation uses uniroot function, which usually gives at least 5 significant digits. Whereas PropCIs::orscoreci function uses incremental or decremental search by the factor of 1.001 which gives only less than 3 significant digits.

Value

There is no standard error.

odd1	odd from the first group, y1/(n1 - y1)
odd2	odd from the second group, y2/(n2 - y2)
OR	odds ratio, odd1/odd2
lower	lower confidence limit of OR
upper	upper confidence limit of OR

Author(s)

Kyun-Seop Bae [e-mail]

References

Miettinen O, Nurminen M. Comparative analysis of two rates. Stat Med 1985;4:213-26

See Also

RDmn1, RRmn1, RDmn, RRmn, ORmn

Examples

  ORmn1(104, 11037, 189, 11034)

sasLM documentation built on Oct. 2, 2024, 9:06 a.m.