ORMH {fmsb} R Documentation

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.

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)
```

[Package fmsb version 0.7.0 Index]