The longest series of high-quality incidence data in the UK, with incidence rates from 1960 onwards, is from the South Thames region (Parkin et al, 2005).
A major strength of the current study is high quality falls incidence data.
More high quality stroke incidence data from around the UK are needed before this can be confirmed.
The inclusion criteria used for this review were based on those developed by Sudlow and Warlow [ 4], which were designed to identify high quality comparable incidence studies.
The availability of high quality cancer incidence data with large nationwide coverage in the NPCR/SEER database enabled the examination of the occurrence of a very rare cancer using indirect standardization of rates.
Important strengths of this study include the population-based coverage and high quality of incidence data from the Queensland cancer registry [ 17] and inclusion of all routinely available covariates in the analysis.
More high quality stroke incidence data from around the UK are needed (particularly in Wales, Northern Ireland, Scotland and the central and northern areas of England) before this geographic variation can be confirmed.
The outcomes from the RCTs generally had high quality for cancer incidence (high for total, colorectal, lung and prostate cancers; and moderate for breast cancer).
With the widespread use of high quality screening mammography, the incidence of ductal carcinoma in situ (DCIS) has increased dramatically.
