1. Occupational risk factors for relapse-free survival in bladder cancer patients
- Author
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Thomas Otto, Frank Volkert, Klaus Golka, Oliver Moormann, Silvia Selinski, Hartmut Niedner, Jan G. Hengstler, Meinolf Blaszkewicz, and Hannah Bürger
- Subjects
Oncology ,medicine.medical_specialty ,Occupational risk ,Health, Toxicology and Mutagenesis ,010501 environmental sciences ,Toxicology ,01 natural sciences ,Relapse free survival ,03 medical and health sciences ,0302 clinical medicine ,Recurrence ,Risk Factors ,Internal medicine ,Germany ,Occupational Exposure ,Medicine ,Risk factor ,0105 earth and related environmental sciences ,Proportional Hazards Models ,Bladder cancer ,Urinary Bladder Cancer ,business.industry ,Proportional hazards model ,Medical record ,Case-control study ,medicine.disease ,Occupational Diseases ,Urinary Bladder Neoplasms ,030220 oncology & carcinogenesis ,Case-Control Studies ,Carcinogens ,business - Abstract
The influence of occupational risk factors on bladder cancer development is well investigated. However, studies on the influence on bladder cancer prognosis are rare. Therefore, it was of interest to investigate the time to first relapse in the follow-ups of three case-control series from Dortmund, Neuss, and Lutherstadt Wittenberg, Germany. Relapse-free survival of in total 794 urinary bladder cancer patients (Dortmund 174, Neuss 407, Lutherstadt Wittenberg 213) was derived from medical records. Cox regression models were used to determine the impact of profession and exposure to bladder carcinogens if the risk factor was present in at least four cases. One or several relapses were observed in 416 cases (52%). Median time to first relapse was 0.94 yr. Ten professions were observed in at least 4 patients. No significant associations were found. However, workers in the leather industry (n = 4), printing industry (n = 4), transportation (n = 43), and chemical industry (n = 40) and locksmiths/mechanics (n = 44) showed shorter relapse-free times. No trend to shorter relapse-free time was observed for miners (n = 42), agriculturists (n = 18), painters/lacquerers (n = 21), colorant production and processing workers (n = 7), foundry workers (n = 5), and persons exposed to aromatic amines (n = 45). Although the follow-up comprised nearly 800 cases, data on occupations and exposures of interest were not sufficient to obtain significant results. However, first results indicated potential associations that are worth further investigations.
- Published
- 2016