Research Article

Application of Cox Proportional Hazards Model in Case of Tuberculosis Patients in Selected Addis Ababa Health Centres, Ethiopia

Figure 3

Graphs of the scaled Schoenfeld residuals and their LOESS smooth curves for the covariates: (a) age of patients, (b) TB patient category, (c) HIV status, and (d) age and HIV status interaction.
536976.fig.003a
(a)
536976.fig.003b
(b)
536976.fig.003c
(c)
536976.fig.003d
(d)