Data frame containing the results of 13 trials comparing BCG vaccination to no vaccination for preventing tuberculosis (TB) (Dias et al. 2011; Berkey et al. 1995) . The numbers of individuals diagnosed with TB in each arm during the study follow-up period are recorded. The absolute degrees latitude at which the study was conducted are also recorded.
Format
A data frame with 26 rows and 6 variables:
- studyn
numeric study ID
- trtn
numeric treatment code
- trtc
treatment name
- latitude
absolute degrees latitude
- r
number diagnosed with TB
- n
sample size
References
Berkey CS, Hoaglin DC, Mosteller F, Colditz GA (1995).
“A random-effects regression model for meta-analysis.”
Statistics in Medicine, 14(4), 395--411.
doi:10.1002/sim.4780140406
.
Dias S, Sutton AJ, Welton NJ, Ades AE (2011).
“NICE DSU Technical Support Document 3: Heterogeneity: subgroups, meta-regression, bias and bias-adjustment.”
National Institute for Health and Care Excellence.
https://www.sheffield.ac.uk/nice-dsu.