Aspirin Data

Efficacy of Aspirin in preventing death after a myocardial infarct.

Usage

data("aspirin")

Format

A data frame with 7 observations on the following 4 variables.

dp

number of deaths after placebo.

tp

total number subjects treated with placebo.

da

number of deaths after Aspirin.

ta

total number of subjects treated with Aspirin.

Details

The data were collected for a meta-analysis of the effectiveness of Aspirin (versus placebo) in preventing death after a myocardial infarction.

Source

J. L. Fleiss (1993), The statistical basis of meta-analysis. Statistical Methods in Medical Research 2, 121–145.

Examples

  data("aspirin", package = "HSAUR3")
  aspirin
#>                                    dp   tp   da   ta
#> \\cite{HSAuR:Elwoodetal1974}       67  624   49  615
#> \\cite{HSAuR:Coronary1976}         64  771   44  758
#> \\cite{HSAuR:ElwoodSweetman1979}  126  850  102  832
#> \\cite{HSAuR:Breddinetal1979}      38  309   32  317
#> \\cite{HSAuR:Persantine1980}       52  406   85  810
#> \\cite{HSAuR:Aspirin1980}         219 2257  246 2267
#> \\cite{HSAuR:ISIS21988}          1720 8600 1570 8587