Table 1. Estimated coefficient and assigned points for each predictor.

Variable	Odds ratio	Beta	Values of variable	Absolute maximum beta value	Rank	Assigned point
Age (year)	0.974	−0.026	90 to 20 by 10	1.8441	2	0 assigned to age =0
						100×(1.8441/2.6481) =70
Tumor size (cm)	2.769	1.018	0.4 to 3 by 0.2	2.6481	1	0 assigned to size =0.4
						100 assigned to size =3
Central location	3.204	1.164	0, 1	1.1644	4	100×(1.1644/2.6481) =44
Invasive adenocarcinoma	3.537	1.263	0, 1	1.2633	3	100×(1.2633/2.6481) =48