Strong warnings about the inherent biasedness of studies involving prevalent exposures (5, 6) seem inconsistent with the practice and experience of epidemiology.
Analysis involved categorizing prevalent cancers by cancer site, sex, marital status at diagnosis (married, single, divorced/separated/widowed, unknown), age group at 31/12/2011 (<40, 40 49, 50 59, 60 69, 70 79, ≥80) and time since diagnosis (<1 year, 1 4.99 years, 5 9.99 years, ≥10 years).
However, while the FDS involved a prevalent, prospectively-studied, community-based cohort and all patients had access to subsidised SMBG [ 5], ROSSO was 'retrolective' newly-diagnosed patients aged ≥45 years were selected—and only those receiving insulin were reimbursed for SMBG [ 4].
That meant no bottled water, and the greatest difficulty the expedition came to face did not involve the prevalent lions, snakes or bugs, but nearly nonexistent potable water.
We evaluated the predictive power of the method by investigating case studies involving two prevalent environmental contaminants, BPA and PCB3, which are increasingly associated with developmental disorders and metabolic diseases.
However, these genes are apparently not involved in the prevalent types of migraine [12, 13].
Finally, one of the predicted disease/gene associations strongly suggests that our method could be of help in the identification of genes involved in highly prevalent clinical phenotypes.
Many intracellular enzymes, such as ribonucleases, (endo- and exonucleases), as well as other cofactors, are involved and exhibit prevalent activity in all organisms of life [ 7].
It is the most prevalent species involved in human nocardiosis in North America [ 11, 13] and its prevalence in France was estimated at 12% among human nocardial infections declared between 2000 and 2007 [ 14].
Quantitative systems analysis revealed the most prevalent species involved in growth of cardiac myocytes, prioritizing future experimental targets [35].
