Table 4.

Observed rates of SARP as a function of dosimetric parameters (NTCP/V10)

Varibale	Median(Range)	Group	No. of patients	No. of RP	p value*
NTCP	2.33%	≤4.20%	71	1(1.4%)	0.001
	(0.51-9.68%)	>4.20%	23	10(43.5%)
V10	42.16%	≤50%	70	4(5.7%)	0.005
	(9.91-83.34%)	>50%	24	7(29.2%)

Abbreviation: NTCP = normal tissue complication probability; SARP = severe acute radiation pneumonitis; * Multivariate logistic regression analysis.