Data for Bacillus Calmette-Guerin (BCG) vaccine studies.

Description

Data from thirteen clinical studies evaluating the efficacy of the BCG vaccine for the prevention of tuberculosis.

Usage

data(vaccine)

Format

y

log odds ratio in each study.

latitude

latitude, distance of each study from the equator, surrogate for the presence of environmental mycobacteria providing a level of natural immunity against tuberculosis.

year

year of the study.

sigma2

estimated within-study variance.

Source

Berkey, C.S., Hoaglin, D.C., Mosteller, F. and Colditz, G.A. (1995). A random-effects regression model for meta-analysis. Statistics in Medicine 14, 395–411.

Examples

data(vaccine)

Results