Models of Christianen et al for Swallowing Dysfunction After Chemoradiation for Head and Neck Cancer: Physician-Rate Swallowing Dysfunction at 6 Months After Therapy

Patient selection: head and neck cancer after chemoradiation

Outcome: physician-rated swallowing dysfunction at 6 months after therapy

Parameters:

(1) mean radiation dose superior pharyngeal constrictor muscle (PCM) in Gy

(2) mean radiation dose supraglottic larynx in Gy

X =

= (0.057 * (mean dose superior PCM)) + (0.037 * (mean dose supraglottic)) – 6.09

probability of swallowing dysfunction =

= 1 / (1 + EXP((-1) * X))

Performance:

• The area under the ROC curve was 0.80.