Figure 2
From: S-carboxymethylcysteine in the treatment of glue ear: quantitative systematic review
Improvement with S-carboxymethylcysteine or placebo in individual trials Each trial is represented by a symbol, the size of which is proportional to the size of the trial (inset). Those in blue represent results for children, and those in yellow results for ears. Symbols above the line of equality indicate where there was a trend towards S-carboxymethylcysteine being more effective than placebo.