Table 2.

Association between tumor site, nodal status, group stage and BP dose

Combined BP (n = 136)	SITE (OC, OPhx, NPhx, Larynx, UNP, HPhx)	N status (N0 – N3)	Group stage (I-III vs. IV)
Mean dose	0.005	0.0002	0.037
Max dose	0.0002	0.002	0.17
V50cc	0.012	< .0001	0.049
V60cc	0.0003	< .0001	0.08
V70cc	0.002	< .0001	0.33
V75cc	0.19	0.08	0.039
D5	0.0005	0.0001	0.12
D10	< .0001	< .0001	0.026
D15	0.0006	< .0001	0.06
D20	0.003	< .0001	0.022
D25	0.22	< .0001	0.10
D30	0.002	< .0001	0.07
Ipsilateral BP (n = 68)	SITE	N status (N0 – N3)	Group stage (I-III vs. IV)
Mean dose	< .0001	< .0001	0.06
Max dose	0.038	0.021	0.20
V50cc	0.004	0.001	0.10
V60cc	0.019	< .0001	0.010
V70cc	0.53	< .0001	0.06
V75cc	0.53	0.001	0.28
D5	0.004	0.0004	0.11
D10	0.003	< .0001	0.007
D15	0.001	0.0006	0.08
D20	0.001	< .0001	0.021
D25	0.013	0.0003	0.14
D30	0.0004	0.0004	0.06
Contralateral BP (n = 68)	SITE (OC, OPhx, NPhx, Larynx, UNP, HPhx)	N status (N0 – N3)	Group stage (I-III vs. IV)
Mean dose	< .0001	0.004	0.045
Max dose	< .0001	0.10	0.29
V50cc	0.003	0.006	0.041
V60cc	< .0001	0.021	0.44
V70cc	0.15	0.20	0.66
V75cc	0.15	0.86	0.52
D5	< .0001	0.042	0.21
D10	< .0001	0.030	0.14
D15	0.0001	0.004	0.09
D20	< .0001	0.009	0.11
D25	< .0001	0.018	0.19
D30	< .0001	0.006	0.13

OC = oral cavity, OPhx = oropharynx, NPhx = nasopharynx, UNP = unknown primary, HPhx = Hypopharynx.