Table 7.

Diagnostic and surgical techniques for liver hematoma/rupture compared for two periods

Variable	Period (y)	N (%)	χ2	P
Diagnostic techniques
Laparotomy	≤ 1990	46 (62.2)	4.152	0.042
	> 1990	151 (49.0)
US	≤ 1990	4 (5.4)	11.413	0.001
	> 1990	70 (22.7)
CT	≤ 1990	11 (14.9)	0.130	0.719
	> 1990	41 (13.3)
US/CT	≤ 1990	1 (1.4)	8.078	0.005
	> 1990	39 (12.7)
Autopsy	≤ 1990	12 (16.2)	24.239	< 0.001
	> 1990	7 (2.3)
Surgical techniques
Laparotomy	≤ 1990	54 (71.1)	0.585	0.444
	> 1990	229 (75.3)
Liver packing	≤ 1990	33 (44.0)	5.801	0.016
	> 1990	180 (59.4)
Hepatic artery ligation	≤ 1990	3 (4.0)	0.712	0.399
	> 1990	20 (6.6)
Liver embolization	≤ 1990	6 (8.0)	0.059	0.808
	> 1990	27 (8.9)
Liver resection	≤ 1990	5 (6.7)	4.673	0.031
	> 1990	6 (2.0)
Hepatorrhaphy/omentoplasty	≤ 1990	17 (22.7)	5.860	0.015
	> 1990	36 (11.8)
Liver transplantation	≤ 1990	0	3.586	0.058
	> 1990	14 (4.6)

US—ultrasound; CT—computed tomography; χ²—chi-square; P—statistical probability; y—year