Use of a saline-coupled bipolar sealer open liver resection for hepatic malignancy: Medical resource use and costs

Table 2 Patient demographics n (%)

	Unmatched		P value	Matched		P value
	SCBS	No SCBS		SCBS	No SCBS
n	152	2993		144	720
Age, mean (SD)	62 (12.5)	61.58 (12.1)	0.683	61.49 (12.5)	62.14 (12.1)	0.568
Age group1						0.960
18 to 44	10 (6.6)	262 (8.8)	0.868	10 (6.9)	49 (6.8)
45 to 54	29 (19.1)	536 (17.9)		28 (19.4)	143 (19.9)
55 to 64	44 (28.9)	914 (30.5)		44 (30.6)	198 (27.5)
65 to 74	46 (30.3)	862 (28.8)		41 (28.5)	220 (30.6)
75 plus	23 (15.1)	419 (14.0)		21 (14.6)	110 (15.3)
Race			0.148			0.692
Black	18 (11.8)	368 (12.3)		18 (12.5)	87 (12.1)
Caucasian	83 (54.6)	1788 (59.7)		76 (52.8)	407 (56.5)
Hispanic	0 (0)	41 (1.4)		0 (0)	0 (0)
Other	51 (33.6)	796 (26.6)		50 (34.7)	226 (31.4)
Region			< 0.001			0.892
Midwest	31 (20.4)	304 (10.2)		26 (18.1)	112 (15.6)
Northeast	52 (34.2)	959 (32.0)		49 (34.0)	260 (36.1)
South	41 (27.0)	1321 (44.1)		41 (28.5)	206 (28.6)
West	28 (18.4)	409 (13.7)		28 (19.4)	142 (19.7)
Sex
Female	71 (46.7)	1315 (43.9)	0.556	67 (46.5)	308 (42.8)	0.461
Payor			0.577			0.903
Commercial	49 (32.2)	1166 (39.0)		49 (34.0)	234 (32.5)
Medicare	21 (13.8)	362 (12.1)		21 (14.6)	111 (15.4)
Medicaid	73 (48.0)	1302 (43.5)		65 (45.1)	341 (47.4)
Other	9 (5.9)	163 (5.5)		9 (6.3)	34 (4.7)

¹Excluding primary malignancy, metastatic solid tumor, mild liver disease, moderate or severe liver disease. P values were calculated with the χ² test (or Fisher’s Exact where cell frequencies < 10), t-test (or Wilcoxon Mann-Whitney test for skewed distributions). SCBS: Saline-coupled bipolar sealer.