Table 4.

Comparing mortality rates between aspirin users (≥180 days) and non-users in patients (n = 333) with a subdivision of Stages III and IV NPC in the T category.

Stages III and IV a n = 333	Low-Dose Aspirin		p-Value
	Non-Users b n = 268	Users ≥ 180 Days n = 65	Aspirin Non-Users vs. User	T1 and 2 vs. T3 and 4
T1 and 2				<0.001 ***
Alive	53 (62.4%)	23 (88.5%)	0.014 *
Dead due to NPC	25 (29.4%)	3 (11.5%)
Other Causes of Dead	7 (8.2%)	0 (0.0%)
T3 and 4
Alive	86 (47.0%)	32 (82.1%)	<0.001 ***
Dead due to NPC	71 (38.8%)	4 (10.3%)
Other Causes of Dead	26 (14.2%)	3 (7.7%)

Abbreviation: vs. versus; ^a Stages IVa and IVb only; ^b One patient with missing data on T category of cancer; * p ≤ 0.05; *** p ≤ 0.001.