Table 2.

Incidence of RT initiation, interruption, modification, and early termination by treatment arm

	Treatment arm
Parameter	HD-CPB	ID	p*	Unadjusted OR (95% CI)	Adjusted OR (95% CI)
Randomized, n (%)	394 (100)	391 (100)
Began RT, n (% of randomized)	325 (82)	360 (92)	0.001	0.41 (0.26–0.64)	0.38 (0.23–0.61)
Began RT, n (%)	325 (100)	360 (100)
RT interrupted	69 (21)	43 (12)	0.001	2.05 (1.34–3.14)	N/A
RT modified	94 (29)	51 (14)	0.001	2.46 (1.68–3.61)	N/A
RT not completed†	29 (9)	8 (2)	0.0001	5.35 (2.17–13.16)	5.68 (2.29–14.1)

Abbreviations: OR = odds ratio of HD:ID related to each endpoint; 95% CI = 95% confidence interval around the OR; N/A = treatment arm was the only significant variable, therefore the univariate OR is used. Other abbreviations as in Table 1.

Unadjusted OR is from univariate analysis; adjusted OR is from multivariate logistic regression controlling for other covariates.

^*p value from comparison of two proportions.

^†Excludes 27 patients with unknown completion status.