Journal of Cancer Prevention

eISSN 2288-3657
pISSN 2288-3649

Age-adjusted income-related inequalities in brain and CNS cancer incidence in Canada, 1992 to 2010

Year The age-adjusted C (95% confidence interval)
Average equivalized household income Median equivalized household income
Total Male Female Total Male Female
1992 –0.027 (–0.058 to 0.004) –0.016 (–0.056 to 0.025) –0.039 (–0.085 to 0.007) –0.026 (–0.057 to 0.006) –0.017 (–0.057 to 0.024) –0.033 (–0.079 to 0.013)
1993 –0.007 (–0.047 to 0.034) –0.005 (–0.051 to 0.040) –0.007 (–0.06 to 0.046) –0.003 (–0.044 to 0.038) –0.004 (–0.049 to 0.040) –0.001 (–0.055 to 0.052)
1994 –0.016 (–0.041 to 0.009) 0.001 (–0.029 to 0.031) –0.037 (–0.078 to 0.003) –0.005 (–0.032 to 0.023) 0.006 (–0.026 to 0.039) –0.02 (–0.065 to 0.024)
1995 –0.019 (–0.047 to 0.009) –0.029 (–0.058 to 0.001) –0.005 (–0.050 to 0.040) –0.009 (–0.038 to 0.019) –0.024 (–0.055 to 0.008) 0.01 (–0.037 to 0.057)
1996 –0.031 (–0.054 to –0.008)a –0.026 (–0.056 to 0.003) –0.034 (–0.075 to 0.007) –0.021 (–0.045 to 0.004) –0.014 (–0.046 to 0.018) –0.027 (–0.071 to 0.017)
1997 –0.009 (–0.033 to 0.014) –0.010 (–0.047 to 0.026) –0.008 (–0.045 to 0.030) –0.009 (–0.033 to 0.016) –0.009 (–0.045 to 0.026) –0.007 (–0.047 to 0.033)
1998 –0.02 (–0.046 to 0.005) –0.017 (–0.047 to 0.013) –0.024 (–0.063 to 0.015) –0.008 (–0.035 to 0.019) –0.005 (–0.040 to 0.029) –0.012 (–0.054 to 0.031)
1999 –0.006 (–0.033 to 0.021) –0.014 (–0.050 to 0.022) 0.005 (–0.031 to 0.040) 0.003 (–0.027 to 0.034) –0.006 (–0.045 to 0.032) 0.015 (–0.022 to 0.053)
2000 –0.044 (–0.078 to –0.011)a –0.051 (–0.100 to –0.001)a –0.037 (–0.075 to 0.001) –0.035 (–0.067 to –0.002)a –0.046 (–0.091 to –0.002)a –0.021 (–0.064 to 0.022)
2001 –0.017 (–0.041 to 0.007) –0.005 (–0.036 to 0.026) –0.028 (–0.066 to 0.011) –0.012 (–0.039 to 0.015) 0.001 (–0.031 to 0.034) –0.025 (–0.069 to 0.02)
2002 –0.018 (–0.048 to 0.013) –0.027 (–0.066 to 0.013) –0.012 (–0.049 to 0.024) –0.012 (–0.036 to 0.013) –0.027 (–0.066 to 0.013) 0.001 (–0.037 to 0.037)
2003 –0.010 (–0.038 to 0.018) –0.002 (–0.037 to 0.033) –0.017 (–0.053 to 0.019) 0.01 (–0.020 to 0.039) 0.017 (–0.014 to 0.048) 0.002 (–0.041 to 0.045)
2004 –0.026 (–0.052 to 0.001) –0.019 (–0.063 to 0.025) –0.033 (–0.071 to 0.004) –0.01 (–0.035 to 0.016) 0.010 (–0.026 to 0.047) –0.038 (–0.077 to 0.002)
2005 –0.039 (–0.069 to –0.008)a –0.047 (–0.087 to –0.007)a –0.031 (–0.071 to 0.009) –0.014 (–0.046 to 0.017) –0.023 (–0.065 to 0.019) –0.008 (–0.051 to 0.035)
2006 –0.034 (–0.063 to –0.005)a –0.018 (–0.062 to 0.027) –0.055 (–0.09 to –0.021)a –0.013 (–0.042 to 0.017) 0.018 (–0.023 to 0.058) –0.053 (–0.089 to –0.017)a
2007 –0.003 (–0.028 to 0.022) 0.003 (–0.037 to 0.043) –0.008 (–0.042 to 0.026) 0.001 (–0.024 to 0.023) –0.001 (–0.038 to 0.036) 0.002 (–0.038 to 0.042)
2008 –0.002 (–0.030 to 0.026) 0.005 (–0.032 to 0.042) –0.006 (–0.043 to 0.031) 0.020 (–0.001 to 0.041) 0.028 (–0.006 to 0.063) 0.013 (–0.024 to 0.049)
2009 –0.012 (–0.037 to 0.013) 0.011 (–0.024 to 0.047) –0.038 (–0.068 to –0.008)a –0.001 (–0.023 to 0.020) 0.014 (–0.019 to 0.047) –0.019 (–0.051 to 0.014)
2010 –0.036 (–0.072 to 0.001) –0.047 (–0.091 to –0.002)a –0.018 (–0.061 to 0.025) –0.003 (–0.041 to 0.035) –0.003 (–0.049 to 0.042) –0.002 (–0.044 to 0.040)
Trend (P-value) 0.0001 (0.902) 0.0002 (0.857) –0.0002 (0.748) 0.001 (0.04) 0.0015 (0.020) 0.0002 (0.850)

The inverse of the standard errors of the age-adjusted C were applied as weights in the trend analyses. CNS, central nervous system. aStatistically significant age-adjusted C at 95% confidence interval.

J Cancer Prev 2021;26:110~117 https://doi.org/10.15430/JCP.2021.26.2.110
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