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Table 1 Incidence rate ratios of the diagnosis of melanomaa (excludes Ontario)b

From: Incidence of cutaneous malignant melanoma by socioeconomic status in Canada: 1992–2006

  All melanoma (n = 105,681) In situ Invasive
IRR P value 95 % CI IRR P value 95 % CI IRR P value 95 % CI
Place of residence
 City (census metropolitan area) 1    1    1   
 Town (census agglomeration) 0.80 0.00 (0.77–0.82) 0.69 0.00 (0.65–0.74) 0.82 0.00 (0.79–0.85)
 Rural 0.80 0.00 (0.78–0.82) 0.71 0.00 (0.67–0.75) 0.82 0.00 (0.79–0.85)
Income quintile
 Highest 1    1    1   
 2nd highest 0.89 0.00 (0.86–0.91) 0.86 0.00 (0.81–0.92) 0.89 0.00 (0.86–0.92)
 Middle 0.85 0.00 (0.83–0.88) 0.79 0.00 (0.74–0.85) 0.86 0.00 (0.83–0.90)
 2nd lowest 0.83 0.00 (0.81–0.86) 0.76 0.00 (0.71–0.82) 0.85 0.00 (0.82–0.88)
 Lowest 0.79 0.00 (0.76–0.81) 0.68 0.00 (0.62–0.73) 0.82 0.00 (0.78–0.85)
Census year
 2006 1.67 0.00 (1.62–1.73) 2.36 0.00 (2.17–2.57) 1.52 0.00 (1.46–1.59)
 2001 1.10 0.00 (1.07–1.13) 1.38 0.00 (1.28–1.49) 1.05 0.02 (1.01–1.09)
 1996 1.01 0.61 (0.98–1.04) 1.09 0.02 (1.01–1.18) 1.00 0.89 (0.96–1.03)
 1991 1    1    1   
Province
 Newfoundland and Labrador 0.67 0.00 (0.63–0.72) 0.73 0.00 (0.63–0.84) 0.66 0.00 (0.61–0.71)
 Prince Edward Island 1.16 0.00 (1.06–1.26) 1.59 0.00 (1.31–1.92) 1.07 0.26 (0.95–1.20)
 Nova Scotia 1.12 0.00 (1.08–1.17) 1.65 0.00 (1.52–1.79) 1.00 0.94 (0.95–1.05)
 New Brunswick 0.99 0.69 (0.95–1.04) 1.20 0.00 (1.08–1.32) 0.94 0.04 (0.89–1.00)
 Quebec 0.39 0.00 (0.37–0.40) 0.17 0.00 (0.15–0.18) 0.44 0.00 (0.42–0.45)
 Ontario b    b    b   
 Manitoba 0.78 0.00 (0.75–0.81) 0.90 0.03 (0.83–0.99) 0.74 0.00 (0.70–0.78)
 Saskatchewan 0.74 0.00 (0.71–0.78) 0.69 0.00 (0.61–0.77) 0.75 0.00 (0.71–0.80)
 Alberta 0.95 0.00 (0.92–0.98) 1.36 0.00 (1.27–1.45) 0.85 0.00 (0.82–0.89)
 British Columbia 1    1    1   
 Territories 0.45 0.00 (0.37–0.57) 0.55 0.02 (0.34–0.90) 0.43 0.00 (0.33–0.56)
  1. CI confidence interval, IRR incidence rate ratio
  2. aNegative binomial regressions on the incidence of diagnosed cases of melanoma by dissemination area (DA) and census year. Regressions include detailed controls for the age/sex composition of the DA as well as controls for the proportions of adults in the DA who are 1) black, 2) South Asian, 3) other Asian and 4) other visible minority groups
  3. bCases of in situ melanoma are not available for Ontario in the Canadian Cancer Registry dataset in the Statistics Canada Research Data Centre so Ontario DAs are excluded from these regressions