Table 1 Factors associated with early versus advanced stage at diagnosis of breast cancer by ethnicity
NZ European | Māori | All cancers | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Characteristic | (N = 1459) | Earlya | (N = 311) | Earlya | (N = 1846) | Earlya | ||||
n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | OR | 95% CI | p | ||
Screening status | <0.001 | |||||||||
Screen detected | 915 (62.7) | 654 (71.5) | 153 (49.2) | 107 (69.9) | 1106 (59.9) | 786 (71.1) | Ref | |||
Interval | 192 (13.2) | 63 (32.8) | 20 (6.4) | 3 (15.0) | 218 (11.3) | 69 (31.7) | 5.30 | 4.15-6.74 | ||
Non-screen | 352 (24.1) | 118 (33.5) | 138 (44.4) | 36 (26.1) | 522 (28.3) | 162 (31.0) | 5.46 | 4.11-7.33 | ||
Age group (years) | ||||||||||
45-49 | 208 (14.3) | 110 (52.9) | 51 (16.4) | 23 (45.1) | 275 (14.9) b | 143 (52.0) | Ref | 0.005 | ||
50-54 | 375 (25.7) | 206 (54.9) | 77 (24.8) | 31 (40.3) | 469 (25.4) | 245 (52.2) | 0.99 | 0.74-1.33 | ||
55-59 | 323 (22.1) | 180 (55.7) | 74 (23.8) | 32 (43.2) | 416 (22.5) | 218 (52.4) | 0.98 | 0.73-1.33 | ||
60-64 | 337 (23.1) | 196 (58.2) | 73 (23.5) | 36 (49.3) | 425 (23.0) | 241 (56.7) | 0.83 | 0.61-1.12 | ||
65-69 | 216 (14.8) | 143 (66.2) | 36 (11.6) | 24 (66.7) | 261 (14.1) b | 170 (65.1) | 0.58 | 0.41-0.82 | ||
Deprivation | ||||||||||
Dep 1-2 | 184 (12.6) | 101 (54.9) | 9 (2.9) | 1 (11.1) | 203 (11.0) | 108 (53.2) | Ref | 0.094 | ||
Dep 3-4 | 157 (10.8) | 104 (66.2) | 23 (7.4) | 13 (56.5) | 186 (10.1) | 120 (64.5) | 0.63 | 0.42–0.94 | ||
Dep 5-6 | 339 (23.2) | 189 (55.8) | 62 (19.9) | 29 (46.8) | 411 (22.3) | 223 (54.3) | 0.96 | 0.68–1.34 | ||
Dep 7-8 | 492 (33.7) | 279 (56.7) | 95 (30.5) | 43 (45.3) | 614 (33.3) | 338 (55.0) | 0.93 | 0.68–1.28 | ||
Dep 9-10 | 287 (19.7) | 162 (56.4) | 122 (39.2) | 60 (49.2) | 432 (23.4) | 228 (52.8) | 1.02 | 0.73–1.42 | ||
Residence | ||||||||||
Urban | 783 (53.7) | 435 (55.6) | 150 (48.2) | 75 (50.0) | 990 (53.6) | 539 (54.4) | Ref | 0.794 | ||
Semi-urban | 370 (25.4) | 222 (60.0) | 107 (34.4) | 50 (46.7) | 492 (26.7) | 277 (56.3) | 0.93 | 0.75–1.15 | ||
Rural | 306 (21.0) | 178 (58.2) | 54 (17.4) | 21 (38.9) | 364 (19.7) | 201 (55.2) | 0.97 | 0.76–1.23 | ||
Year of diagnosis | ||||||||||
1999-2002 | 249 (17.1) | 128 (51.4) | 44 (14.1) | 20 (45.5) | 300 (16.3) | 153 (51.0) | Ref | 0.423 | ||
2003-2006 | 450 (30.8) | 270 (60.0) | 75 (24.1) | 33 (44.0) | 542 (29.4) | 308 (56.8) | 0.79 | 0.60-1.05 | ||
2007-2009 | 363 (24.9) | 203 (55.9) | 86 (27.7) | 45 (52.3) | 479 (25.9) | 263 (54.9) | 0.86 | 0.64-1.14 | ||
2010-2012 | 397 (27.2) | 234 (58.9) | 106 (34.1) | 48 (45.3) | 525 (28.4) | 293 (55.8) | 0.82 | 0.62-1.09 | ||