Figure 4.
The median overall survival (OS) of each of the analyzed studies presented as dot plots. The three horizontal lines in each figure represent the quartiles of all the data combined. Circle size is proportional to the number of patients on each trial. The combination of gemcitabine (Gem) and platinum agents (Plat) did not provide a significant improvement in OS (P = 0.10) compared with the rest of the regimens.