Skip to main content
Fig. 4 | Systematic Reviews

Fig. 4

From: Many continuous variables should be analyzed using the relative scale: a case study of β2-agonists for preventing exercise-induced bronchoconstriction

Fig. 4

The effect of β2-agonists on exercise-induced bronchoconstriction in the study-level analysis. The studies in this analysis are the same as those in the Analysis 1.1 of Bonini et al. [11]. Each circle indicates one study and the area of the circle is proportional to the number of participants and represents the weighting of the study in calculating the mean absolute and relative effects. See Fig. 2 for the description of the lines in this figure. The mean absolute effect, defined by the intercept alone, is shown by the horizontal solid line at the level of 21 pp. The mean relative effect, defined by the slope alone, is shown by the diagonal solid line at the level of 77%. For the identity of the 44 trials and their references, see Additional file 1: Table S2 and [11]. Abbreviations: pp., percentage points

Back to article page