Background: previous studies have indicated a prevalence of dementia in older admissions of ∼42% in a single London teaching hospital, and 21% in four Queensland hospitals.
Background: a high prevalence of co-morbid mental health problems is reported among older adults admitted to general hospitals.
The presence of a control group providing a background prevalence of latex sensitisation in this population and a random selection of participants which minimised the potential of participant bias that arises with a volunteer approach.
The non-exposed group (i.e., high socioeconomic background) had a prevalence rate of 10%% ECC, chosen based on the 11 % goal outlined in the US government's Healthy People 2010 agenda [ 33].
The presence of a control group provided a background prevalence of latex sensitisation in this population which allowed for a better estimation of associations attributable to work-related factors.
The cerebral palsies remain the most frequent cause of severe motor disability in childhood with a background prevalence of two per thousand live births [ 6].
The figures were 8.7% (95%CI: 5.2, 13.3) among participants whose residence was 50-100 m of a main road, 8.6% (95%CI: 5.1,13.5) among those within 100-150 m of a main road, 9.0% (95%CI: 6.4,12.1) among those within 150-300 m against a background prevalence of 9.0% (95%CI: 6.9,11.5) among participants whose residence was more than 300 m of a main road.
In this setting with a low background prevalence of latent TB, IGRA tests could be useful in the initial diagnostic process in patients with suspected TB [ 16].
Hitchon and colleagues [ 36] reported an association between immune responses to the oral pathogen P. gingivalis and the presence of ACPA in a population with a high background prevalence of RA-predisposing HLA-DRB1 alleles.
The strong association of MetS with Korean and Hispanic ethnicities partly reflects a higher background population prevalence of MetS.
