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. 2018 Sep 25;2018:1978765. doi: 10.1155/2018/1978765

Table 3.

Comparison between subsequent intra-abdominal adhesion and prior surgical procedures.

	Surgery ^a (n=40)		Non-surgery (n=162)		p-value
	With adhesion	Without adhesion	With adhesion	Without adhesion	p-value
Patients numbers (n) ^d	16 (40 %)	24 (60 %)	22 (13.6 %)	140 (86.4 %)	<0.001
Age (years) ^b	60.7±12.8	50.5±12.7	51.6±16.4	49.1±14.2	0.023
Operation time (minutes) ^c	81.4±43.4	71.3±34.2	76.7±24.5	72.4±30.2	0.670
PD peritonitis [n (%)] ^d	8 (21.1%)	8 (4.9%)	11 (28.9%)	47 (28.7%)	0.161

a = previous abdominal surgery.

b and c = the age and operation time among four groups were compared by means of one-way ANOVA.

d =the differences among four groups were compared by means of a Chi-Square test.