0.0001* | 7 | 3 | 8 | 4 | 2 | 5 | A-Mouth sensation | What are the effects of tobacco smoking on the gums? | 10 |
16 | 23 | 16 | 10 | 14 | 10 | B-Inflammation of gums | |||
72 | 67 | 64 | 43 | 40 | 39 | C-Mouth cancer | |||
5 | 7 | 12 | 3 | 4 | 7 | D-I haven’t any idea |