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) |