| Age < 55 years | Age ≥ 55 years | ||||||
---|---|---|---|---|---|---|---|---|
 | PFx group | Control group | PFx group | Control group | ||||
ISS-groups | N | % | N | % | N | % | N | % |
1-8* | 0 | 0 | 3 | 1.1 | 0 | 0 | 21 | 4.3 |
9-15 | 0 | 0 | 21 | 7.9 | 0 | 0 | 91 | 18.4 |
16-24 | 3 | 3 | 40 | 15 | 4 | 3.7 | 103 | 20.9 |
25-40 | 20 | 19.8 | 100 | 37.5 | 27 | 25 | 188 | 38.1 |
41-49 | 14 | 13.9 | 35 | 13.1 | 22 | 20.4 | 30 | 6.1 |
50-74 | 40 | 39.6 | 29 | 10.9 | 33 | 30.6 | 34 | 6.9 |
75 | 24 | 23.8 | 39 | 14.6 | 22 | 20.4 | 27 | 5.5 |
Totals | 101 | 100 | 267 | 100 | 108 | 100 | 494 | 100 |