. Author manuscript; available in PMC: 2018 Aug 10.

Published in final edited form as: JAMA Otolaryngol Head Neck Surg. 2016 May 1;142(5):430–437. doi: 10.1001/jamaoto.2015.3595

Table 3.

Multivariable Analysis of Individual Quality Metrics and Survival

Quality Metric	Adjusted Hazard Ratio (95% CI)
Quality Metric	OS	DSS	DFS
Treatment related
Elective neck dissection with >18 lymph nodes	0.28 (0.11-0.74)^a	0.08 (0.01-0.77)^a	0.48 (0.21-1.12)
No unplanned surgery <14 d	0.82 (0.42-1.62)	0.61 (0.28-1.32)	0.59 (0.31-1.11)
No unplanned readmission <30 d after discharge	0.39 (0.22-0.72)^a	0.44 (0.20-1.00)^a	0.58 (0.33-1.04)
Referral for adjuvant radiotherapy if stage III or IV	0.24 (0.09-0.64)^a	0.21 (0.06-0.83)^a	0.24 (0.09-0.61)^a

Abbreviations: DFS, disease-free survival; DSS, disease-specific survival; OS, overall survival.

Indicates variables significantly associated with improved survival after adjusting for pT stage, pN stage, extracapsular spread, final margin status, and Adult Comorbidity Evaluation-27 index comorbidity score.