What Is Simple Is Perhaps Not Always the Truth

P-value: What is and what is not

The misinterpretation and misuse of p-value have been increasing for decades. In March 2016, the American Statistical Association released a statement to warn about the use and interpretation of p-value. In this study, we provided a definition and discussion of p-value and emphasized the importance of its accurate interpretation.    

What is bright is not always gold.

To the Editor: The recent paper from Myerson et al1 on the “reliability” of formulae for calculation of echocardiographic left ventricular (LV) mass needs to be carefully considered. Quantitative echocardiography presents problems of reproducibility, but less than expected from initial studies performed without 2D guidance. There is evidence that the test-retest “error” of echocardiography is s...

health communication what it is and what is not

Antenatal Dexamethasone For Women at Risk af Preterm Birth and Intraventricular Haemorrhage: What is the Truth?

Administration of antenatal corticosteroids to pregnant women with imminent delivery of a newborn at 24 to 34 weeks of gestation represents one of the most important advances in perinatal medicine in the past 25 years1,2. A single course of antenatal steroid has been associated with a decrease in acute neonatal systemic morbidity and mortality after preterm birth reducing the risk of respirator...

Perhaps Unidimensional Is Not Unidimensional

Miller (1956) identified his famous limit of 7 ± 2 items based in part on absolute identification-the ability to identify stimuli that differ on a single physical dimension, such as lines of different length. An important aspect of this limit is its independence from perceptual effects and its application across all stimulus types. Recent research, however, has identified several exceptions. We...