Figure 1: Australian clinical trials by phase.

During an analysis of 3,199 clinical trials in Australia from 2012 to 2016, GlobalData analysts found that Phase III trials outnumbered all other trials overall, making up 33%–41% of the trial types during the period.

The share of Phase II trials came second, ranging from 29%–37%, and hitting its lowest percentage in 2013, as shown in Figure 1. The share of Phase I trials increased from 12% up to 18% over the five-year period, whereas Phase IV trials decreased from 18% in 2012 to 11% in 2016.