Table 5.

Sensitivity analysis of the effects of an unmeasured confounder (UC) on the HR of death after treatment for all patients and oropharynx patients. The baseline HRs are from IPTW models for all patients and oropharynx patients, respectively.

Prevalence of UC in Primary CRT group	Prevalence of UC in Primary Surgery group	UC HR	Primary CRT Treatment HR adjusted for UC (95% CI)
			All Patients	Oropharynx Patients
0.1	0	1.1	1.12 (1.04–1.21)	1.21 (1.09–1.34)
0.1	0	1.25	1.10 (1.02–1.19)	1.19 (1.08–1.32)
0.1	0	1.5	1.08 (1.00–1.16)	1.16 (1.05–1.29)
0.2	0	1.1	1.11 (1.03–1.20)	1.20 (1.08–1.33)
0.2	0	1.25	1.08 (1.00–1.16)	1.16 (1.05–1.29)
0.2	0	1.5	1.03 (0.95–1.11)	1.11 (1.00–1.23)
0.3	0	1.1	1.10 (1.02–1.18)	1.19 (1.07–1.31)
0.3	0	1.25	1.05 (0.97–1.13)	1.14 (1.03–1.26)
0.3	0	1.5	0.98 (0.91–1.06)	1.06 (0.96–1.18)
0.4	0	1.1	1.09 (1.01–1.17)	1.17 (1.06–1.30)
0.4	0	1.25	1.03 (0.95–1.11)	1.11 (1.00–1.23)
0.4	0	1.5	0.94 (0.87–1.02)	1.02 (0.92–1.13)
0.5	0	1.1	1.08 (1.00–1.16)	1.16 (1.05–1.29)
0.5	0	1.25	1.00 (0.93–1.08)	1.09 (0.98–1.20)
0.5	0	1.5	0.90 (0.84–0.98)	0.98 (0.88–1.08)