From: Parotid gland sparing IMRT for head and neck cancer improves xerostomia related quality of life
 | Group | Never % | Sometimes % | Frequent % | Always % | UV p value | MV p value |
---|---|---|---|---|---|---|---|
Do you have a problem with the transport of solid food through your mouth? | IMRT | 32 | 39 | 18 | 11 | < 0.001 | < 0.001 |
 | Control | 12 | 27 | 41 | 21 |  |  |
Do you have a problem with the transport of grounded food through your mouth? | IMRT | 67 | 19 | 11 | 3 | < 0.001 | 0.001 |
 | Control | 40 | 27 | 24 | 10 |  |  |
Do you have a problem with swallowing solid food? | IMRT | 32 | 38 | 20 | 10 | < 0.001 | < 0.001 |
 | Control | 15 | 24 | 33 | 28 |  |  |
Do you have a problem swallowing grounded food? | IMRT | 62 | 19 | 16 | 3 | 0.007 | 0.02 |
 | Control | 42 | 23 | 27 | 9 |  |  |
Do you experience a dry mouth during meals? | IMRT | 39 | 35 | 20 | 5 | < 0.001 | < 0.001 |
 | Control | 14 | 31 | 36 | 19 |  |  |
Do you need to have a drink of water to swallow your food? | IMRT | 23 | 39 | 19 | 19 | < 0.001 | < 0.001 |
 | Control | 6 | 24 | 31 | 40 |  |  |
Do you find it difficult to eat in front of others? | IMRT | 57 | 24 | 11 | 8 | 0.006 | 0.02 |
 | Control | 35 | 31 | 19 | 15 |  |  |
 |  | Solid % | Grounded % | Liquid % |  |  |  |
What type of diet do you have? | IMRT | 91. | 6 | 3 | Â | 0.03 | 0.3 |
 | Control | 79 | 12 | 10 |  |  |  |
 |  | Yes | No |  |  |  |  |
Do you have to swallow more frequently then you used to? | IMRT | 66 | 34 | Â | Â | 0.2 | 0.2 |
 | Control | 78 | 21 |  |  |  |  |