Table 1

Summary of proportional hazards analysis of lung cancer data

	Coefficient	Standard error	p Value
PI = 0.010×70−0.685×1+0.346×3+0.314×1+0.680×1+0.417×0 = 2.047 (for a 70 year old male patient with activity score 3, anorexia, hoarseness, but no metastases).
Age	0.010	0.008	0.022
Male	−0.685	0.180	0.000
Activity (0–4)	0.346	0.082	0.000
Anorexia	0.314	0.145	0.031
Hoarseness	0.680	0.210	0.001
Metastases	0.417	0.220	0.059