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Table 3 Characteristics of included studies on both firefighting and police work and prostate cancer risk (N = 7)

From: Prostate cancer in firefighting and police work: a systematic review and meta-analysis of epidemiologic studies

Author/Year Location of Study Study Design Incidence or Mortality Follow-up Period Number of Cases/Deaths Cohort Size/Total Number of Casesa Prostate Cancer Risk Estimates for Ever versus Never Employmentb
Sritharan et al, 2017b* Canada Cohort (linkage) Incidence 1991–2011 165 firefighters; 325 police 1,100,000
1,100,000
HR 1.17, 95% CI 1.01–1.36; HR 1.22, 95% CI 1.09–1.36
Zeegers et al. 2004 [11] Netherlands Cohort (linkage) Incidence 1986–1993 709 firefighters; 693 police 58, 279
58, 279
RR 0.59, 95% CI 0.05–6.33; RR 1.62, 95% CI 0.62–4.27
Demers et al. 1994 [28] USA Cohort Incidence 1974–1989 66 firefighters; 28 police 2, 447
1, 878
SIR 1.40, 95% CI 1.10–1.70; IDR 1.10, 95% CI 0.70–1.80
Demers et al. 1992 [29] USA Cohort Mortality 1945–1989 30 firefighters; 11 police 4, 546
3, 676
SMR 1.34, 95% CI 0.90–1.91; SMR 1.02, 95% CI 0.51–1.82
Sritharan et al. 2017a [79] Canada Case–control Incidence 1995–1998 38 firefighters; 35 police 1, 737
1, 737
OR 1.67, 95% CI 0.94–2.95; OR 1.15, 95% CI 0.66–1.99
Sritharan et al. 2016 [80] Canada Case–control Incidence 1994–1997 53 firefighters; 12 police 760
760
OR 0.73, 95% CI 0.53–1.01; OR 0.82, 95% CI 0.41–1.63
Sauve et al. 2016 [12] Canada Case–control Incidence 2005–2009 26 firefighters; 45 police 1, 937
1, 937
OR 1.72, 95% CI 0.88–3.37; OR 1.60, 95% CI 1.00–2.40
  1. acohort size represents the total sample size in only cohort studies, and the total number of cases is only applicable to case–control studies
  2. bHR – hazard ratio, SIR – standardized incidence ratio, SMR – standardized mortality/morbidity ratio, RR – relative risk, IDR – incidence density ratio, OR – odds ratio
  3. *manuscript submitted and currently being revised for publication