Multivariate COX regression hazard model
A model was proposed to calculate the Cox Proportional Hazard Ratios by utilizing 4 factors- age, cytomorphology, stage, and ALK protein expression in 39 cases and data is depicted as a forest plot (Supplementary Fig 1). The global p-value using Log Rank test was significant (p= 0.04). Based on the hazard ratios, ALK negativity was associated with poor outcome.