These disagreements were attributed to screening false positives and were probably based on the different assay designs [ 33].
Some of the declines in cervix cancer mortality, most marked in urban areas, may be attributed to screening programmes.
That is, 74% of non-participation in screening within national guidelines can be attributed to screening inequalities associated with the above risk factors.
47 However, similar reductions were observed in Norway and the Republic of Ireland, and the reductions in these countries cannot be attributed to screening.
This illustrates how important it is to properly separate breast cancers according to screening status at diagnosis, otherwise any effect of screening will be diluted and cannot be attributed to screening.
A cohort study from 2005 by Olsen et al compared Copenhagen, where screening was introduced in 1991, with non-screened areas in Denmark and reported a 25% reduction in breast cancer mortality that was attributed to screening.
Evidence that at least part of this decline can be attributed to screening comes from the expected increase in incidence of early stage and in situ breast cancers, followed by a decline in advanced cancer and subsequent mortality in the UK, northern Europe and Australia [ 70- 73].
By combining the breast cancer mortality rates in Norway in 2009, the estimated reduction in breast cancer mortality, and the CISNET Stanford simulation model, we calculated the absolute reduction in breast cancer mortality that could be attributed to screening within each age group.
To a large extent the improved cure was attributed to screen detected cancers being generally found at earlier clinical FIGO stages than symptomatic cancers.
The weak temperature dependence of the mobility may be attributed to screening of polar optical phonon scattering at high temperatures by the high free carrier concentration, which is at the order of 1014 cm−2.
