Table 5.

Reasons for RT modification by treatment arm

	Treatment arm
Reason	HD	ID	Total
RT modified	94 (100)	51 (100)	145 (100)
Reason for modification*
Toxicity from RT	15 (16)	17 (33)	32 (22)
Toxicity from chemotherapy	37 (40)	3 (6)	40 (28)
Patient noncompliance	2 (2)	0	2 (1)
Scheduling difficulties/mechanical problems	6 (6)	7 (14)	13 (9)
Complicating medical conditions	20 (21)	8 (16)	28 (19)
Other	14 (15)	16 (31)	30 (21)

Abbreviations as in Table 1.

Values are number (percentage).

^*Taken from data sheets submitted, usually not containing detailed information; thus the categorization may not be specific.