metafor (version 2.1-0)

dat.hackshaw1998: Studies on Lung Cancer Risk from ETS Exposure

Description

Results from 37 studies on the risk of lung cancer from environmental tobacco smoke (ETS) exposure.

Usage

dat.hackshaw1998

Arguments

Format

The data frame contains the following columns:

study numeric study number
author character first author of study
year numeric publication year
country character country where study was conducted
design character study design (either cohort or case-control)
cases numeric number of lung cancer cases
yi numeric log odds ratio

Details

The dataset includes the results from 37 studies (4 cohort, 33 case-control) on the risk of lung cancer from environmental tobacco smoke (ETS) exposure from the spouse in women who are lifelong nonsmokers. Values of the log odds ratio greater than 0 indicate an increased risk of cancer in exposed women compared to women not exposed to ETS from their spouse.

Examples

Run this code
# NOT RUN {
### copy data into 'dat' and examine data
dat <- dat.hackshaw1998
dat

### random-effects model using the log odds ratios
res <- rma(yi, vi, data=dat, method="DL")
res

### estimated average odds ratio with CI (and credibility/prediction interval)
predict(res, transf=exp, digits=2)
# }

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