Group |  | − 3 to − 2 year | − 2 to − 1 year | − 1 to 0 year | 0 to 1 year | 1 to 2 years | 2 to 3 years | Total (0 to 3 years) |
---|---|---|---|---|---|---|---|---|
NV group | n | 15 | 15 | 15 | 15 | 15 | 15 | 45 |
Yes | 4 | 5 | 3 | 4 | 4 | 5 | 13 | |
No | 11 | 10 | 12 | 11 | 11 | 10 | 32 | |
PS group | n | 15 | 15 | 15 | 15 | 15 | 15 | 45 |
Yes | 1 | 4 | 3 | 5 | 4 | 5 | 14 | |
No | 14 | 11 | 12 | 10 | 11 | 10 | 31 |