151751-Najiba-Chargi

48 CHAPTER 3 Table 1. (Continued) Variables N % Weight loss 6 months prior to diagnosis None <10% ≥10% 32 9 9 64 18 18 Smoking status Never smoked Former Current 3 29 18 6 58 36 Pack-years (years) 0 1-15 16-25 26-40 ≥41 3 9 5 12 11 6 18 10 24 22 Alcohol use No Current Former 3 36 11 6 72 22 Alcohol units/day (M, SD) 3.7 3.6 Adult Comorbidity Evaluation-27 None Mild Moderate Severe 12 14 17 7 24 28 34 14 Tumor localization Tonsil Base of tongue Soft palate Oropharynx not otherwise specified 12 7 1 30 24 14 2 60 Tumor stage T1 T2 T3 T4a T4b 8 20 11 10 1 16 40 22 20 2 Nodal stage N0 N1 N2a N2b N2c N3 16 11 2 7 12 2 32 22 4 14 24 4 Tumor, Node, Metastasis (TNM) stage I II III IV 3 8 11 28 6 16 22 56 Legend: N:number of patients, M:Mean, SD:standard deviation