David S Brennan

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Multicentre MRI studies offer great potential to increase study power and flexibility, but it is not yet clear how reproducible the results from multiple centres may be. Here we present results from the multicentre study 'CaliBrain', examining the reproducibility of fMRI data within and between three sites. Fourteen subjects were scanned twice on three 1.5(More)
Middle-aged and older adults are retaining teeth and avoiding dentures, which should impact quality of life. The aims of our study were to investigate tooth loss and chewing ability and their association with oral- and general-health-related quality of life and life satisfaction. A random sample of 45- to 54-year-olds from Adelaide, South Australia, was(More)
Oral-health-related quality of life (OHRQoL) is expected to have multiple dimensions. It was the aim of this study to investigate the dimensional structure of OHRQoL measured by the Oral Health Impact Profile (German version) (OHIP-G) and to derive a summary score for the instrument. Subjects (N = 2050; age, 16-79 yrs) came from a national survey. We used(More)
Oral-specific measures are often preferred to examine outcomes of oral disorders. However, generic measures can add additional information, including health utility. The aim was to assess the Oral Health Impact Profile (OHIP), EuroQol (EQ-5D), and Assessment of Quality of Life (AQoL) instruments in relation to oral health in terms of their discriminative(More)
BACKGROUND Previous studies have shown variation in long-term dental visiting but little is known about the oral health outcomes of such variation. OBJECTIVE The objective of this study is to determine the association of different dental visiting trajectories with dental clinical and oral health-related quality of life (OHRQoL) indicators. METHODS This(More)
OBJECTIVES To investigate associations of dental behaviour with social inequality in oral health. METHODS A random sample of 45-54 year-olds from Adelaide, South Australia was surveyed by self-complete questionnaire in 2004-05 (n = 879, response rate 43.8%). Oral examinations were performed by calibrated dentists on 709 persons (80.7% of participants). (More)
OBJECTIVES Using generic measures to examine outcomes of oral disorders can add additional information relating to health utility. However, different algorithms are available to generate health states. The aim was to assess UK-, US- and Australian-based algorithms for the EuroQol (EQ-5D) in relation to their discriminative and convergent validity. Methods:(More)
To evaluate the health and nutritional status of 3 wild Australian psittacine species, plasma and hepatic mineral concentrations and plasma biochemical values were measured in wild-caught galahs (Eolophus roseicapilla), long-billed corellas (Cacatua tenuirostris), and sulphur-crested cockatoos (Cacatua galerita). No correlations were found between hepatic(More)
Burden-of-oral-disease studies have been hampered by lack of data on disability weights. It is likely that disability weights will vary between conditions such as gingivitis and periodontal pockets. The aims of this study were to assess health-related quality of life and disability weights for periodontal conditions. A random sample of 45- to 54-year-olds(More)
BACKGROUND The aim of this study was to examine consumption of fruit and vegetables in relation to tooth loss and income. METHODS Data were collected in 2004-06, using a three-stage, stratified clustered sample, involving a computer-assisted telephone interview (CATI), oral examination and mailed questionnaire followed by a food frequency questionnaire.(More)