Table 1: Combined WHO/ISUP grading and combined grading score groups.

Primary grade

Secondary grade

Combined grade score

No

Combined grading score groups

1

1

2

16

Low

1

2

3

13

Low

2

1

3

27

Low

2

2

4

15

Low

2

3

5

40

Intermediate

3

2

5

45

Intermediate

3

3

6

8

High

4

2

6

3

High

2

4

6

2

High

3

4

7

12

High

4

3

7

4

High