Table 1. Baseline discrepancies between SDV and original data.

BASELINE CHARACTERISTIC	DISCREPANCIES NUMBER OF PATIENTS (%)
	CONTROL 266	EXPERIMENTAL 267	TOTAL 533
ELIGIBILITY CRITERIA*	2 (0.8)	2 (0.7)	4 (0.8)
STAGE	8 (3.0)	9 (3.4)	17 (3.2)
WHO PERFORMANCE STATUS	9 (3.4)	7 (2.6)	16 (3.0)
GENDER	2 (0.8)	1 (0.4)	3 (0.6)
DATE OF BIRTH	6 (2.3)	6 (2.2)	12 (2.3)
ETHNIC GROUP	1 (0.4)	6 (2.2)	7 (1.3)
DATE OF DIAGNOSIS	27 (10.2)	26 (9.7)	53 (9.9)

^*Four ineligible patients were not identified as ineligible by SDV.