TSP-1-1223 A/G Polymorphism as a Potential Predictor of the Recurrence Risk of Bladder Cancer in a Chinese Population

Table 1

Frequency distribution of selected variables of the bladder cancer cases and controls.

Variables	Cases (𝑛=609)		Controls (𝑛=670)		𝑃^a
	𝑛	%	𝑛	%
Age (year)
<65	289	47.5	331	49.4	0.486
≥65	320	52.5	339	50.6
Sex
Male	484	79.5	506	75.5	0.091
Female	125	20.5	164	24.5
Smoking status
Never	317	52.1	426	63.6	<0.001
Ever	292	47.9	244	36.4
Drinking status
No	418	68.6	482	71.9	0.196
Yes	191	31.4	188	28.1
Family history of cancer
No	440	72.2	622	92.8	<0.001
Yes	169	27.8	48	7.2
Tumor stage
Nonmuscle invasive	466	76.5
Muscle invasive	143	23.5
Tumor grade
Grade 1	298	48.9
Grade 2	194	31.9
Grade 3	117	19.2

aStudent’s 𝑡-test for age distribution between the cases and controls; two-sided 𝜒² test for other selected variables between the cases and controls.