The Impact of Multiple Malignancies on Patients with Bladder Carcinoma: A Population-Based Study Using the SEER Database

Table 1

Cohort definitions
BO	Bladder cancer only: patients diagnosed with bladder cancer and no other cancers
AB	Antecedent cancer(s) + bladder cancer: patients diagnosed with nonbladder malignancy before being diagnosed with bladder cancer
BS	Bladder cancer + subsequent cancer(s): patients diagnosed with nonbladder malignancy after being diagnosed with bladder cancer
ABS	Antecedent cancer + bladder cancer + subsequent cancer: patients diagnosed with nonbladder malignancy both before and after being diagnosed with bladder cancer
SEER Summary Staging Definitions
Low-stage	Localized disease
High-stage	Regional or distant disease
Variables adjusted for in Cox model
Age	Grade
Sex	Stage
Race	Year of diagnosis