| Absolute risk reduction | ||||
---|---|---|---|---|---|
 | Understand and could explain (%) | Some understanding (%) | Knowledge but no understanding (%) | Do not know but would like to (%) | Do not know (%) |
Number needed to treat | Â | Â | Â | Â | Â |
Understand and could explain | 89/234 (38) | 25/234 (11) | 3/234 (1) | 4/234 (2) | 6/234 (3) |
Some understanding | 9/234 (4) | 37/234 (16) | 4/234 (2) | 5/234 (2) | 0/234 (0) |
Knowledge but no understanding | 1/234 (0) | 1/234 (0) | 4/234 (2) | 1/234 (0) | 0/234 (0) |
Do not know but would like to | 0/234 (0) | 4/234 (2) | 1/234 (0) | 8/234 (3) | 2/234 (1) |
Do not know | 5/234 (2) | 14/234 (6) | 1/234 (0) | 3/234 (1) | 7/234 (3) |