Table 4.

Example of when to reinvite participants to a biennial screening programme based on baseline PLCO_m2012 scores and smoking status

Baseline PLCOm2012 risk score category	When to consider reinviting people currently smoking	Proportion eligible by time of reinvitation (current), % (n/N)	When to consider reinviting people who formerly smoked	Proportion eligible by time of reinvitation (former), % (n/N)
<0.5%	14 years	54 (30/56)	Discharge	N/A (0/0)
0.5%–1.0%	8 years	77 (128/166)	12 years	52 (137/266)
1.0%–1.2%	4 years	100 (83/83)	8 years	78 (166/214)
1.2%–1.4%	2 years	96 (68/71)	4 years	70 (166/236)
1.4%–1.51%	2 years	100 (57/57)	2 years	100 (146/146)

Presented with estimated proportions of participants in each risk category forecasted to become eligible by each proposed time of reinvitation; among N participants in each risk category who is forecasted to ever become eligible during a 20-year screening programme.

N/A, not available; PLCOm2012, Prostate, Lung, Colorectal and Ovarian trial’s risk model 2012.