Table 4 Age and ethnicity standardised breast cancer rates, rate ratios (SRR), and rate differences (SRD) by income, age 25+
From: Ethnic and socioeconomic trends in breast cancer incidence in New Zealand
Income | Cohort | SR | 95% CI | SRR | 95% CI | SRD | 95% CI |
|---|---|---|---|---|---|---|---|
High | 1981-86 | 122 | (111 - 134) | 1 | 0 | ||
1986-91 | 158 | (147 - 170) | 1 | 0 | |||
1991-96 | 141 | (133 - 150) | 1 | 0 | |||
1996-01 | 177 | (169 - 186) | 1 | 0 | |||
2001-04 | 188 | (179 - 197) | 1 | 0 | |||
% Change | 54% | ||||||
P (Trend) | 0.04 | ||||||
Pooled | 156 | (151 - 160) | |||||
Medium | 1981-86 | 122 | (112 - 132) | 0.99 | (0.88 - 1.13) | -0.7 | (-16 - 14) |
1986-91 | 149 | (141 - 158) | 0.94 | (0.86 - 1.03) | -8.8 | (-23 - 5.4) | |
1991-96 | 152 | (144 - 159) | 1.07 | (0.99 - 1.16) | 10 | (-1.3 - 22) | |
1996-01 | 165 | (157 - 172) | 0.93 | (0.87 - 0.99) | -13 | (-25 - -1.2) | |
2001-04 | 181 | (171 - 190) | 0.96 | (0.90 - 1.03) | -7.5 | (-20 - 5.4) | |
% Change | 48% | ||||||
P (Trend) | < .01 | 0.67 | 0.59 | ||||
Pooled | 152 | (148 - 156) | 0.98 | (0.94 - 1.01) | -3.7 | (-9.7 - 2.2) | |
Low | 1981-86 | 114 | (107 - 121) | 0.93 | (0.83 - 1.04) | -8.8 | (-22 - 4.6) |
1986-91 | 126 | (119 - 133) | 0.80 | (0.73 - 0.87) | -32 | (-46 - -19) | |
1991-96 | 139 | (132 - 147) | 0.99 | (0.91 - 1.07) | -1.9 | (-13 - 9.0) | |
1996-01 | 162 | (155 - 170) | 0.91 | (0.86 - 0.98) | -15 | (-27 - -3.6) | |
2001-04 | 167 | (159 - 174) | 0.89 | (0.83 - 0.95) | -22 | (-34 - -9.5) | |
% Change | 47% | ||||||
P (Trend) | < .01 | 0.94 | 0.83 | ||||
Pooled | 140 | (137 - 143) | 0.90 | (0.87 - 0.93) | -16 | (-21 - -10) |