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Table 2 questions related to xerostomia in rest

From: Parotid gland sparing IMRT for head and neck cancer improves xerostomia related quality of life

  Group Much less % Less % Equal % More % Much more % UV p value MV p value
Do you have a normal amount of saliva? IMRT 37 39 18 3 4 0.07 0.008
  Control 58 27 8 2 5   
Has there been a change lately in the saliva amount? IMRT 7 15 69 8 1 1.0 0.7
  Control 13 14 56 14 3   
   Never % Sometimes % Frequent % Always %    
Is your mouth dry when you are not eating? IMRT 20 43 20 16   0.004 0.001
  Control 9 30 36 25    
Do you have problems with your gumbs? IMRT 69 17 8 5   0.3 0.2
  Control 55 32 8 5    
Do you have problems speaking? IMRT 40 31 24 5   < 0.0001 < 0.0001
  Control 16 28 35 22    
Do you have to drink water during the day because of a dry mouth? IMRT 20 25 28 27   0.001 0.001
  Control 7 15 35 44    
Do you have trouble sleeping due to a dry mouth? IMRT 55 25 12 8   0.5 0.2
  Control 48 26 18 7    
Do you have to drink water during the night because of a dry mouth? IMRT 25 47 19 9   0.05 0.03
  Control 21 32 32 15    
  1. Questions and answers related to xerostomia experienced in rest for IMRT group (n = 75) and control group (n = 87). UV: univariate tested (linear by linear association), MV: multivariate tested (ordinal regression, IMRT tested together with N stage, T stage, prior chemotherapy, prior surgery, interval between RT and questionnaire, current smoker yes/no).