منابع مشابه
Blindness in Randomized Controlled Trials
In combination with randomization, blinding or masking is an important factor in randomized controlled trials (RCTs), particularly in trials that assess therapeutic effects. Here an attempt is made to explain blindness and why it is important. In clinical trials, blinding is defined as the condition imposed on a study in which study participants, health care providers and assessors collecting o...
متن کاملEducating smokers about the risk of blindness – insights to improve tobacco product health warning labels
BACKGROUND Health warning labels (HWL) on tobacco products help educate smokers about the health effects from smoking; however, there is a need to improve HWL content including images and text to increase effectiveness. In Canada, a HWL was created that communicates smoking's causal association with "blindness" from age-related macular degeneration (AMD). This study surveyed Canadian optometris...
متن کاملPositive impact of Australian 'blindness' tobacco warning labels: findings from the ITC four country survey.
BACKGROUND Smokers with greater knowledge of the health effects of smoking are more likely to quit and remain abstinent. Australia has communicated the causal association of smoking and blindness since the late 1990s. In March 2007, Australia became the first country to include a pictorial warning label on cigarette packages with the message that smoking causes blindness. The current study test...
متن کاملText Advertising Blindness: The New Banner Blindness?
Copyright © 2010-2011, Usability Professionals’ Association and the authors. Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, or republish, to pos...
متن کاملFrom Change Blindness to Choice Blindness
The phenomenon of change blindness has received a great deal of attention during the last decade, but very few experiments have examined the effects of the subjective importance of the visual stimuli under study. We have addressed this question in a series of studies by introducing choice as a critical variable in change detection (see Johansson, Hall, Sikström, & Olsson, 2005, Johansson, Hall,...
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ژورنال
عنوان ژورنال: The American Journal of the Medical Sciences
سال: 1879
ISSN: 0002-9629
DOI: 10.1097/00000441-187907000-00090