Table 3. Probability of disease progression according to total score.

Progression score	Probability of progression at 1 year			Probability of progression at 5 years
	%	95% CI		%	95% CI
0	0.2	0–0.7		0.8	0–1.7
2–6	1	0.4–1.6		6	5–8
7–13	5	4–7		17	14–20
14–23	17	10–24		45	35–55