CAMAN (version 0.78)

aspirin: Aspirin use and breast cancer risk

Description

This data set can be used to examine the recent epidemiological studies on aspirin use and breast cancer risk published from 2001 to 2007 within a meta-analysis, and to investigate reasons for heterogeneity between the individual studies.

We systematically searched for cohort-studies and case-control-studies from 2001-2007, which evaluated the association between aspirin and breast cancer risk. A total of 15 studies (seven cohort studies and eight case-control studies) met the inclusion criteria.

Usage

data("aspirin")

Format

A data frame consisting of 15 data sets (rows) and 11 attributes (columns)

References

Schlattmann, P.(2009) Medical Applications of Finite Mixture Models. Berlin: Springer.

Examples

#Example
#Homogeneous Metaregression adjusting for study type and year of publication

data(aspirin)
wgt <- 1/aspirin$var# calculate weights
m0 <- mixcov(dep="logrr", fixed=c("type","yearc"), random="", weight=wgt,
             k=1,family="gaussian",data=aspirin)