Adjusted odds ratio (OR) or relative risk ratios (RRR) for interval cancer and subtypes compared with screen-detected cancers.

The last category in each row is the reference category.*Logistic regression between screen-detected (ref) and interval cancer. The ORs are adjusted for the other variables in the table and the year of last mammogram.**Multinomial regression between screen-detected (ref) and subtypes of interval cancer. The RRRs are adjusted for the other variables in the table and the year of last mammogram.+We excluded early recall, because there were no cases of early recall in occult tumors. All the estimates are also adjusted by mammogram year.Abbreviations: SDC: Screen-detected cancer, IC: Interval Cancer, TI: True interval, FN: False-negative, MS: Minimal-signs, OT: Occult tumours, SFM: Screen-film mammography, DM: Digital mammography and HRT: Hormone Replacement Therapy.Adjusted odds ratio (OR) or relative risk ratios (RRR) for interval cancer and subtypes compared with screen-detected cancers.