Is Low CACs Really Different From Zero…

Is depression really different in older people?

Adult-onset asthma: is it really different?

Asthma that starts in adulthood differs from childhood-onset asthma in that it is often non-atopic, more severe and associated with a faster decline in lung function. Understanding of the underlying mechanism of adult-onset asthma and identification of specific phenotypes may further our understanding of pathophysiology and treatment response, leading to better targeting of both existing and ne...

Dividing by Zero - How Bad Is It, Really?

In computable analysis testing a real number for being zero is a fundamental example of a noncomputable task. This causes problems for division: We cannot ensure that the number we want to divide by is not zero. In many cases, any real number would be an acceptable outcome if the divisor is zero but even this cannot be done in a computable way. In this note we investigate the strength of the co...

Is a ventilator-associated pneumonia rate of zero really possible?

PURPOSE OF REVIEW The increasing number of hospitals reporting ventilator-associated pneumonia (VAP) rates at or close to zero begs the question of whether zero should become the national benchmark for VAP. This article explores the significance of very low VAP rates, reviews differences in surveillance and clinical rates, proposes reasons for their discrepancies, and suggests possible objectiv...

Is low-nicotine Marlboro snus really snus?

Swedish snus is a medium/high nicotine delivery, low-nitrosamine moist smokeless tobacco product that has been estimated to be at least 90% less harmful than smoked tobacco. More men use snus than smoke cigarettes in Sweden, and a quarter of male former smokers quit by switching to snus. Leading multinational cigarette manufacturers have begun test-marketing snus-like products in the United Sta...