American Association for Cancer Research

Table 4.

Select population characteristics of bladder cancer cases and controls

Variable	Cases, n = 184	Controls, n = 192	P value
Age at blood draw,* mean (SD)	64.1 (8.8)	64.1 (8.4)	0.99
BMI at blood draw, mean (SD)	25.8 (3.6)	25.7 (4.2)	0.76
% male	67.2	65.5	0.72
Relative telomere length,^† mean (SD)	0.23 (0.16)	0.27 (0.15)	0.002
Relative telomere length, median	0.22	0.26
Pack-years of smoking,^‡ mean (SD)	33.2 (23.8)	27.0 (20.2)	0.02
Cigarette smoking,^§ n (%)			0.75
Never	58 (31.7)	60 (31.6)
Former	92 (50.3)	101 (53.2)
Current	33 (18.0)	29 (15.3)

Variable	Cases, n = 184	Controls, n = 192	P value
Age at blood draw,* mean (SD)	64.1 (8.8)	64.1 (8.4)	0.99
BMI at blood draw, mean (SD)	25.8 (3.6)	25.7 (4.2)	0.76
% male	67.2	65.5	0.72
Relative telomere length,^† mean (SD)	0.23 (0.16)	0.27 (0.15)	0.002
Relative telomere length, median	0.22	0.26
Pack-years of smoking,^‡ mean (SD)	33.2 (23.8)	27.0 (20.2)	0.02
Cigarette smoking,^§ n (%)			0.75
Never	58 (31.7)	60 (31.6)
Former	92 (50.3)	101 (53.2)
Current	33 (18.0)	29 (15.3)

Age at blood draw was a matching factor.

P value obtained from Wilcoxon rank sum test.

Among cigarette smokers only.

Smoking status was a matching factor. Note that for smoking in NHS, matching was current versus not current smoking.