Table 2.
Income-related inequalities in the incidence of bladder cancer in Canada (excluding Ontario), 1992–2010 (measured based on average household income)
| Incidence rate† in each income quartile | The C (95% CI) | ||||
|---|---|---|---|---|---|
| Lowest | 2nd | 3rd | Highest | ||
| Males | |||||
| 1992 | 3.570 | 2.859 | 3.116 | 2.071 | − 0.091 (− 0.140 to − 0.041) |
| 1993 | 3.695 | 3.158 | 3.180 | 2.186 | − 0.095 (− 0.143 to − 0.046) |
| 1994 | 3.207 | 3.663 | 2.996 | 1.963 | − 0.095 (− 0.124 to − 0.067) |
| 1995 | 3.321 | 3.342 | 2.910 | 2.183 | − 0.084 (− 0.113 to − 0.056) |
| 1996 | 3.596 | 3.548 | 2.736 | 2.012 | − 0.122 (− 0.152 to − 0.092) |
| 1997 | 3.413 | 3.434 | 3.279 | 2.649 | − 0.050 (− 0.079 to − 0.021) |
| 1998 | 3.367 | 3.663 | 3.214 | 2.649 | − 0.061 (− 0.089 to − 0.033) |
| 1999 | 3.972 | 3.660 | 3.281 | 2.474 | − 0.085 (− 0.112 to − 0.058) |
| 2000 | 3.950 | 3.660 | 3.148 | 2.474 | − 0.080 (− 0.110 to − 0.050) |
| 2001 | 3.819 | 3.872 | 3.303 | 2.303 | − 0.087 (− 0.115 to − 0.060) |
| 2002 | 3.994 | 4.064 | 3.457 | 2.616 | − 0.076 (− 0.102 to − 0.050) |
| 2003 | 4.038 | 4.180 | 3.303 | 2.673 | − 0.076 (− 0.104 to − 0.047) |
| 2004 | 4.011 | 4.006 | 3.277 | 2.917 | − 0.076 (− 0.103 to − 0.048) |
| 2005 | 4.288 | 3.753 | 3.416 | 2.917 | − 0.084 (− 0.112 to − 0.055) |
| 2006 | 4.672 | 4.154 | 3.468 | 3.231 | − 0.090 (− 0.114 to − 0.065) |
| 2007 | 4.288 | 4.154 | 3.554 | 2.917 | − 0.082 (− 0.107 to − 0.056) |
| 2008 | 4.779 | 4.491 | 3.780 | 3.145 | − 0.093 (− 0.119 to − 0.067) |
| 2009 | 4.851 | 4.214 | 3.555 | 2.707 | − 0.125 (− 0.149 to − 0.101) |
| 2010 | 4.871 | 4.507 | 3.645 | 2.898 | − 0.113 (− 0.139 to − 0.087) |
| Trend (p value) | − 0.001 (0.362) | ||||
| Females | |||||
| 1992 | 1.040 | 1.025 | 0.819 | 0.876 | − 0.034 (− 0.095 to 0.026) |
| 1993 | 1.144 | 1.173 | 1.015 | 0.847 | − 0.048 (− 0.103 to 0.006) |
| 1994 | 0.961 | 1.187 | 0.924 | 0.723 | − 0.063 (− 0.109 to − 0.016) |
| 1995 | 1.070 | 1.233 | 0.966 | 0.723 | − 0.081 (− 0.126 to − 0.036) |
| 1996 | 1.026 | 1.073 | 1.029 | 0.747 | − 0.060 (− 0.103 to −0.017) |
| 1997 | 1.136 | 1.165 | 1.050 | 1.012 | − 0.028 (− 0.064 to 0.009) |
| 1998 | 1.201 | 1.256 | 1.176 | 1.036 | − 0.041 (− 0.080 to − 0.002) |
| 1999 | 1.224 | 1.233 | 0.916 | 0.980 | − 0.044 (− 0.083 to − 0.004) |
| 2000 | 1.224 | 1.141 | 1.105 | 0.806 | − 0.066 (− 0.110 to − 0.022) |
| 2001 | 1.224 | 1.325 | 1.024 | 0.980 | − 0.056 (− 0.093 to − 0.019) |
| 2002 | 1.224 | 1.177 | 1.239 | 0.936 | − 0.042 (− 0.083 to − 0.002) |
| 2003 | 1.288 | 1.416 | 1.239 | 0.980 | − 0.049 (− 0.087 to − 0.011) |
| 2004 | 1.301 | 1.461 | 1.094 | 0.767 | − 0.090 (− 0.129 to − 0.051) |
| 2005 | 1.301 | 1.603 | 1.094 | 0.909 | − 0.093 (− 0.131 to − 0.054) |
| 2006 | 1.363 | 1.502 | 1.160 | 0.965 | − 0.081 (− 0.119 to − 0.043) |
| 2007 | 1.590 | 1.441 | 1.392 | 0.965 | − 0.092 (− 0.130 to − 0.053) |
| 2008 | 1.446 | 1.420 | 1.326 | 0.937 | − 0.070 (− 0.107 to −0.033) |
| 2009 | 1.548 | 1.567 | 1.280 | 1.035 | − 0.095 (− 0.128 to − 0.062) |
| 2010 | 1.509 | 1.378 | 1.194 | 0.891 | − 0.109 (− 0.145 to − 0.073) |
| Trend (p value) | − 0.003 (0.001) | ||||
Note: Ontario was not included in the analysis as it did not report in situ bladder cancer cases for the time period considered
†Per 10,000 population