Detection of bacterial DNA from cholesterol gallstones by nested primers polymerase chain reaction

Table 1 The relationship between cholesterol content of gallstones and the rate of gallstones harbor bacterial DNA

Cholesterol content (%)	Harbor bacterial DNA		No harbor bacterial DNA		Total
	Case	%	Case	%	Case	%
30-69	5	16.67	0	0	5	16.67
70-90	11	36.66	3	10.0	14	46.67
> 90	10	33.33	1	33.33	11	36.66

Table 2 The relationship between water content of gallstones and gallstones harbor bacterial DNA

Group	Case	Water content (%)
Harbor bacterial DNA	26	26.57 ± 10.39
No harbor bacterial DNA	4	19.18 ± 4.88