Fig. 1
From: A corpus of potentially contradictory research claims from cardiovascular research abstracts
The diagram represents the outcome of studies exploring the effectiveness of a vaccine (BCG) for preventing tuberculosis. Studies that favour the vaccine are shown on the left side of the vertical column while those that favour the placebo are shown on the right side. This diagram shows one study that favoured the placebo (Comstock & Webster, 1969) and two for which no statistically significant difference between the vaccine and placebo could be identified, (TPT Madras, 1980) and (Comstock et al.,1976). The vaccine was favoured in all other studies. The dataset was retrieved from metafor [25], an R package for conducting meta-analyses