Table 4.

The efficacy of rolofylline per point subgroups

Total points	Hazard ratio	95% confidence interval	p value
0	5.52	1.68–18.13	0.005
1	1.35	0.76–2.40	0.306
2	0.74	0.44–1.24	0.249
3	1.14	0.67–1.94	0.639
4	0.61	0.40–0.92	0.019