Table 2:

Number of injection stops due to reflux or draining vein embolization, extent of reflux and draining vein embolization, and filled honeycomb-like sections of the artificial nidus^{^a}

	Onyx		PHIL		P Value_{Onyx vs PHIL,}^{^b}P Value_subgroups^{^c}
	Onyx_30s	Onyx_60s	PHIL_30s	PHIL_60s	P Value_{Onyx vs PHIL,}^{^b}P Value_subgroups^{^c}
Injection stops due to reflux (No.)	5 (1–10)		6 (2–11)		.633
	7	3	6	5	.251
	(4–10)	(1–5)	(2–7)	(3–11)
Injection stops due to embolization of draining veins (No.)	6 (3–10)		5 (3–8)		.956
	7	5	5	6	.778
	(3–10)	(4–6)	(3–8)	(3–8)
Reflux distance (mm)	10.3 (5.2–11.4)		10.9 (7.7–13.0)		.156
	10.3	9.7	9.6	11.5	.164
	(5.2–10.7)	(7.2–11.4)	(7.7–13.0)	(10.9–13.0)
Draining vein distance (mm)	17.2 (5.1–20.6)		15.0 (12.9–22.6)		.683
	17.2	17.5	16.3	13.8	.457
	(5.1–20.6)	(14.8–20.2)	(13.3–22.6)	(12.9–17.5)
Filled honeycomb-like sections of the artificial nidus at first reflux or draining vein embolization (No.)	13 (8–20)		9 (6–14)		.032
	12	13	9	10	.109
	(8–20)	(13–15)	(7–10)	(6–14)
Filled honeycomb-like sections of the artificial nidus (No.)	24 (14–28)		20 (14–28)		.791
	21	27	28	18	.011
	(14–24)	(24–28)	(22–28)	(14–18)	(PHIL_30s vs. PHIL_60s)

Note:—Onyx indicates Onyx 18; PHIL, PHIL 25.
↵a Data presented as median (range).
↵b Mann-Whitney U test.
↵c Kruskal-Wallis test with the post hoc Dunn test.