Table 1.

Patient characteristics of the palliative RT and nonpalliative RT groups before and after propensity score matching

Variable	Patient characteristics in raw data			After propensity score matching
	Palliative RT	Nonpalliative RT	P-value	Palliative RT	Nonpalliative RT	P-value
Age, years			0.009			0.588
≤65	490	1,679		490	501
>65	357	1,501		357	346
Gender			0.468			0.662
Male/female	433/414	1,581/1,599		433/414	442/405
Race			0.092			0.735
White	688	2504		688	697
Black	49	253		49	42
Other/unknown	110	423		110	108
Marital status			0.000			0.868
Married	578	1,904		578	576
Others	248	1,167		248	253
Unknown	21	109		21	18
Grading			0.103			0.907
G1	55	204		55	56
G2	142	577		142	131
G3	167	514		167	167
G4	3	24		3	5
Unknown	480	1,861		480	488
Tumor size			0.000			0.912
≤5 cm	177	497		177	171
>5 cm	221	1,008		221	227
Unknown	449	1,675		449	449
Cause of death			0.290			0.744
Dead from cancer	704	2,593		704	709
Alive/dead not from cancer	143	587		143	138

Abbreviation: RT, radiotherapy.