[show abstract][hide abstract] ABSTRACT: Objective: This article examines the prevalence of positive testing for bipolar tendencies on the Mood Disorder Questionnaire (MDQ) in a primary care office setting. Method: Participants in this study were older than 18 years of age and had not been previously diagnosed with bipolar disorder at the time of study participation. 688 individuals submitted appropriately completed forms and were included in the study, which was conducted from October through November 2004. Results: 10.8% of screened individuals tested positive for bipolar tendencies using the criteria determined by the investigators. These findings exceed estimates in previous studies of the prevalence of bipolar disorder in the general population. Statistically significant predictors of MDQ results included age (< 35 or ≥?35 years), complaints of anxiety or depression, and psychotropic medication use (none, 1 or more). Study participants who were under 35 years of age and complained of anxiety or depression and took 1 or more psychotropic medications had a probability of testing positive on the MDQ of 0.45. Those under the age of 35 years who complained of anxiety or depression and had no history of psychotropic medication use had a probability of testing positive on the MDQ of 0.27. The sample group consisting of individuals aged 35 years or older who complained of anxiety or depression and took psychotropic medications yielded a probability of positivity of 0.30; the probability of positivity for the 35-and-over subgroup who complained of anxiety or depression but did not take psychotropic medications was 0.16. Conclusion: Participants who did not complain of anxiety or depression and did not have a history of psychotropic medication use exhibited a lower incidence of positive MDQ scores compared with those who did complain of anxiety and depression and did have a history of psychotropic medication use. No other correlations were found to be statistically significant. No separate validation of the MDQ results cited was independently performed during this study.
The Primary Care Companion to The Journal of Clinical Psychiatry 02/2006; 8(5):264-8.
[show abstract][hide abstract] ABSTRACT: The 2dF (Two-degree Field) facility at the prime focus of the Anglo-Australian Telescope provides multiple-object spectroscopy over a 2° field of view. Up to 400 target fibres can be independently positioned by a complex robot. Two spectrographs provide spectra with resolutions of between 500 and 2000, over wavelength ranges of 440 and 110 nm respectively. The 2dF facility began routine observations in 1997.2dF was designed primarily for galaxy redshift surveys and has a number of innovative features. The large corrector lens incorporates an atmospheric dispersion compensator, essential for wide wavelength coverage with small-diameter fibres. The instrument has two full sets of fibres on separate field plates, so that re-configuring can be done in parallel with observing. The robot positioner places one fibre every 6 s, to a precision of 0.3 arcsec (20 μm) over the full field. All components of 2dF, including the spectrographs, are mounted on a 5-m diameter telescope top end ring for ease of handling and to keep the optical fibres short in order to maximize UV throughput.There is a pipeline data reduction system which allows each data set to be fully analysed while the next field is being observed.2dF has achieved its initial astronomical goals. The redshift surveys obtain spectra at the rate of 2500 galaxies per night, yielding a total of about 200 000 objects in the first four years. Typically a B=19 galaxy gives a spectrum with a signal-to-noise ratio of better than 10 per pixel in less than an hour; redshifts are derived for about 95 per cent of all galaxies, with 99 per cent reliability or better. Total system throughput is about 5 per cent. The failure rate of the positioner and fibre system is about 1:10 000 moves or once every few nights, and recovery time is usually short.In this paper we provide the historical background to the 2dF facility, the design philosophy, a full technical description and a summary of the performance of the instrument. We also briefly review its scientific applications and possible future developments.
Monthly Notices of the Royal Astronomical Society 05/2002; 333(2):279 - 299. · 5.52 Impact Factor