Table 3

Covariate-adjusted hazard ratios for bladder calculus among the sampled patients, by sex
Variable Sex
Male Bladder cancer OR (95% CI) Female Bladder cancer OR (95% CI)
Prior bladder calculus
  Yes 3.45*** (2.39-4.99) 3.05** (1.53-6.08)
  No (reference group) 1.00 1.00
Monthly Income
  NT$1-15,840 (reference group) 1.00 1.00
  NT$15,841-25,000 1.21* (1.05-1.40) 1.24* (1.03-1.49)
  ≥NT$25,001 1.33** (1.13-1.57) 1.47** (1.12-1.92)
Geographic region
  Northern (reference group) 1.00 1.00
  Central 0.98 (0.83-1.17) 0.83 (0.65-1.07)
  Eastern 1.06 (0.90-1.23) 0.86 (0.70-1.07)
  Southern 1.09 (0.73-1.62) 0.74 (0.42-1.32)
Hypertension 0.88 (0.77-1.01) 0.69*** (0.57-0.82)
Renal disease 1.94*** (1.60-2.37) 4.37*** (3.44-5.55)
Coronary heart disease 0.73** (0.63-0.86) 1.03 (0.83-1.28)
Diabetes 0.95 (0.81-1.12) 1.04 (0.85-1.28)
Bladder outlet obstruction 0.90 (0.45-1.79) 0.45 (0.02-13.73)
Urinary tract infection 1.08*** (1.04-1.11) 1.53 (1.47-1.58))
Tobacco use disorder 1.29*** (1.13-1.48) 1.68*** (1.62-1.74)
Alcohol abuse 0.95 (0.83-1.09) 0.99 (0.95-1.03)
Obesity 1.03 (0.99-1.06) 1.07 (0.99-1.12)

Notes: OR was calculated using Cox proportional hazard regression, stratified by age and urbanization level group.

Chung et al.

Chung et al. BMC Cancer 2013 13:117   doi:10.1186/1471-2407-13-117

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