Table 2.

Demographics of the training and testing groups

	Training (n = 231)	Test (n = 58)	p value
Age (median)	36	41.5	0.10
Sex
Male	124	29	0.72
Female	107	29
Ethnicity			0.35
Caucasian	155	37
Non-Caucasian	26	4
Not disclosed	50	17
Stage			0.13
1	14	5
2	120	20
3	46	17
4	51	16
Chemotherapy			0.11
ABVD/AVD	199	55
Other	32	3
Radiotherapy			0.87
No	179	45
Yes	52	13
Treated as advanced disease			0.55
No	59	12
Yes	172	46
2-year EFS event			0.99
No	177	45
Yes	54	13

2-EFS, 2-year event-free survival. The p values were calculated using a t-test for age and a χ² test for the remaining demographic features