94 Appendix 4a. Spearman correlation coefficients of the WST versus the EORTC QLQ-H&N35 for the number of swallows *: p<0.05, M0: before treatment, M3: 3 months after treatment, M6: 6 months after treatment WST Number of swallows EORTC QLQ-H&N35 M0 (n = 101) M3 (n = 92) M6 (n = 92) Spearman’s ρ p-value Spearman’s ρ p-value Spearman’s ρ p-value Pain in mouth 0.088 0.378 0.175 0.094 -0.009 0.936 Swallowing 0.145 0.145 0.201 0.055 0.110 0.295 Senses problems 0.056 0.575 0.055 0.601 -0.030 0.774 Speech problems -0.043 0.667 0.173 0.099 0.110 0.295 Trouble with social eating 0.126 0.206 0.113 0.285 0.279 0.007* Trouble with social contact 0.050 0.615 0.135 0.201 0.156 0.138 Less sexuality 0.152 0.128 -0.003 0.981 -0.017 0.877 Teeth -0.072 0.472 -0.013 0.903 0.024 0.819 Opening mouth 0.114 0.253 0.067 0.525 0.073 0.489 Dry mouth 0.052 0.603 0.053 0.616 -0.085 0.422 Sticky saliva -0.121 0.227 0.107 0.308 -0.037 0.724 Coughing -0.018 0.859 0.035 0.741 -0.056 0.595 Feeling ill 0.082 0.413 0.169 0.108 0.161 0.127 Pain killers 0.003 0.975 0.037 0.728 -0.109 0.303 Nutritional supplements 0.052 0.607 0.086 0.417 0.156 0.137 Feeding tube -0.106 0.289 -0.044 0.680 0.144 0.172 Weight loss -0.120 0.234 0.043 0.683 0.004 0.973 Weight gain -0.087 0.388 -0.170 0.108 0.108 0.306
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