ORMH: Calculate pooled odds ratio and its confidence intervals with...

In fmsb: Functions for Medical Statistics Book with some Demographic Data

Calculate pooled odds ratio and its confidence intervals with Mantel-Haenszel's method

Description

Calculate pooled odds ratio and its confidence intervals with Mantel-Haenszel's method.

Usage

 ORMH(TBL, conf.level=0.95) 

Arguments

TBL	A matrix with 4 columns. The first column is the number of exposed cases. The second column is the number of unexposed cases. The third column is the number of exposed controls. The forth column is the number of unexposed controls. Rows should be composed of different strata or studies.
conf.level	Probability for confidence intervals. Default is 0.95.

Value

estimate	Calculated point estimate of pooled odds ratio with Manterl-Haenszel's method.
conf.int	A numeric vector of length 2 to give upper/lower limit of confidence intervals.
conf.level	Simply return the value of given conf.level.

Author(s)

Minato Nakazawa [e-mail] https://minato.sip21c.org/

References

Rothman KJ (2012) Epidemiology: An Introduction. 2nd Ed., Oxford University Press, Oxford.

Examples

# Table 10-6 of Rothman's textbook (Chapter 10).
ORMH(matrix(c(3, 9, 104, 1059, 1, 3, 5, 86), 2, 4, byrow=TRUE), conf.level=0.9)
# Figure 8-4 of Rothman's textbook (Chapter 8)
# https://www.ncbi.nlm.nih.gov/pubmed/7630245
# https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(05)74403-2/fulltext
TenStudies <- matrix(
 c(215, 229, 311-215, 306-229,
   38, 33, 59-38, 51-33,
   161, 174, 293-161, 293-174,
   76, 88, 164-76, 163-88,
   103, 105, 129-103, 133-105,
   65, 67, 120-65, 125-67,
   81, 75, 113-81, 110-75,
   48, 63, 160-48, 159-63,
   22, 21, 60-22, 62-21,
   56, 51, 137-56, 140-51
   ), 10, 4, byrow=TRUE)
ORMH(TenStudies)
ElevenStudies <- rbind(TenStudies, c(468, 480, 229, 205))
ORMH(ElevenStudies)

fmsb documentation built on May 29, 2024, 2:02 a.m.