Description Usage Format Source References
The data consist of k=40 randomized trials between 1980 and 1989 of a surgical treatment for stomach ulcers. Each of the trials has an estimated log-odds ratio that measures the rate of occurrence of recurrent bleeding given the surgical treatment.
1 | data("ulcer")
|
A data frame of (y_i, se_i) for i = 1,...,40.
y
log-odds of the occurrence of recurrent bleeding in the i^{th} study
se
standard error of the log-odds for the i^{th} study
Sacks, H.S., Chalmers, T.C., Blum, A.L., Berrier, J., and Pagano, D., 1990. "Endoscopic hemostasis: an effective therapy for bleeding peptic ulcers," Journal of the American Medical Association, 264(4), pp. 494-499.
Efron, B., 1996. "Empirical Bayes methods for combining likelihoods," Journal of the American Statistical Association, 91(434), pp. 538-550.
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