Research Article

Chinese Herbal Decoction Based on Syndrome Differentiation as Maintenance Therapy in Patients with Extensive-Stage Small-Cell Lung Cancer: An Exploratory and Small Prospective Cohort Study

Figure 1

The study was separated into two phases. The first phase was from the beginning of CHD treatment to disease progression. The second phase was from disease progression to death or study conclusion (September, 2013). Total time was the time of CHD treatment in the first phases and second phases. The length of CHD treatment was grouped according to the median CHD treatment time in different phases.