Showing pages from Day SM

Portrait of John Hutchinson
Spirometry

According to Merriam-Webster’s medical dictionary, Spirometry is the measurement by means of a spirometer of the air entering and leaving the lungs.

Body mass index

We recently commented on obesity trends in the US. As we noted there, the CDC provides an online calculator that allows input of weight

Obesity trends in the United States

Obesity is generally defined as a body mass index greater than or equal to 30 kg/m2. As the units suggest, BMI is calculated by dividing weight in kilograms by the square of height in meters.

Parachute Efficacy

Few scientists question the usefulness of randomized controlled trials in assessing the efficacy of medical interventions. Those who argue for more evidence-based medicine frequently highlight the importance of randomized controlled trials,