Impact of mammographic screening on ethnic and socioeconomic inequities in breast cancer stage at diagnosis and survival in New Zealand: a cohort study

Table 2 Factors associated with advanced stage at diagnosis of breast cancer in Māori compared with NZ European women

Characteristic	OR	95% CI	p
Model A (Unadjusted))	1.51	1.18–1.93	0.001
Model B (Age adjusted)	1.49	1.16-1.91	0.002
Model C (Model B + Year of diagnosis ^c)	1.49	1.15-1.91	0.002
Model D (Model C + Screening status)	1.25	0.96-1.64	0.101
Model E (Model D + Deprivation)	1.24	0.94-1.64	0.133
Model F (Model E + Urban/Rural residence)	1.24	0.95-1.65	0.125
Model H (Model E + interaction terms ^d)	1.28	0.74-2.23	0.373

(Odds ratios for stage at diagnosis (i.e., advanced ^bversus early ^a) in Māori compared with NZ European women with stepwise adjustment for age, year of diagnosis, screening status, socioeconomic deprivation and urban/rural residential status).
(^aearly stage = in-situ & stage I, ^badvanced stage = stages I to III, ^cyear categories as in Table 1, d – ethnicity x deprivation, ethnicity x screening and deprivation x screening).

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