More recently, three other randomized trials of colorectal cancer screening, using an endoscopic method called flexible sigmoidoscopy instead of FOBT, have also reported reductions in both colorectal cancer incidence and mortality using a single screen or two screens 3 to 5 years apart [ 6- 8].
To attempt to maintain reliability however, we did use a single screening clinician to perform all baseline screening examinations.
Since both volume and frequency of alcohol consumption affect health [ 2], we used a single screening question designed to capture frequency of risky high-volume drinking [ 31].
Sony's PSP uses a single screen, offers Internet access, allows users in close proximity to play against each other, and can play movies using the company's proprietary UMD disc format.
Early demo models of the headset used a single screen divided to produce two 640 by 800 pixel images - one for each eye - but it is likely that the version that gets released publicly will be in high-definition.
One of several such smorgasbords that have recently popped up, the spot has four counters — The Press (coffee), 3Bs (bacon, burgers and beer), Fornetti (Italian) and RedFarm Stand (Asian) — from which customers can build and pay for a meal using a single touch-screen kiosk.
After separation, gels were exposed to Cronex X-ray film, using a single intensifying screen.
We examined 199 samples from 150 patients with ovarian cancer first by using a single point screen, then by full Scatchard analysis, over a concentration range between 0.086-16.6 0.086-16.6
"Each confers a moderate risk," Dr. Xu said, adding that the effect of having just one of the variants — a 10 or 20percentt increase in a man's chance of having prostate cancer — was not enough to justify using a single variant for screening.
