OBJECTIVES: To analyse and compare the prognostic factors of @entity0 in the target population of our community-screening programme as a function of the method of detection and to analyse the differences in the prognostic factors as a function of the @entity1 's age and the screening episode. SETTING: A Breast Cancer-Screening Programme (BCSP) in Northeast Spain. METHODS: Observational study of all primary malignant breast lesions diagnosed in a @entity1 between 50 and 69 years of age between 18 October 1995 and 31 December 2002. The 16 centres that @entity1 from the target population might have attended were contacted. RESULTS: A total of 225 (37.2%) of the lesions included were diagnosed through the BCSP, 59 (9.7%) interval @entity5 were detected, and 321 (53.1%) were detected through other circuits. Node involvement was significantly lower in the lesions detected at screening (32%) in @entity5 (41.8%) and those detected through other circuits (47.5%). A significantly larger percentage of the interval @entity5 (28.6%) and the lesions diagnosed outside the BCSP (22.1%) scored >5.4 on the Nottingham Prognostic Index (NPI) than those diagnosed within the programme (10.9%). The relation between the NPI and the detection method was only statistically significant in the 65-69-year-old age group. The NPI score of the @entity5 detected by the BCSP showed a statistically significant association with age. CONCLUSION: This analysis has shown notable differences in some prognostic factors for @entity0 according to the method of detection. Association between age and the a priori prognosis of the malignant lesions arises.

Relationship between the method of detection and prognostic factors for XXXX in a community with a screening programme.

@entity1 :: ('9606', 'Species') :: ['women', 'woman', 'patient'] @entity5 :: ('MESH:D009369', 'Disease') :: ['cancers', 'comparison to the interval cancers', 'tumours'] @entity0 :: ('MESH:D001943', 'Disease') :: ['breast cancer']
@entity0 :: (MESH:D001943,Disease) :: ['breast cancer']
