The range rule tells us that the standard deviation of a sample is approximately equal to one fourth of the range of the data. In other words s = (Maximum â Minimum)/4. This is a very straightforward formula to use, and should only be used as a very rough estimate of the standard deviation.
4) Durable medical equipment: Wheel chair, commodes and raised toilet sheet, walker and power operated vehicles which improves the quality of living of the patients are known as durable medical equipment. It also includes iron lungs, oxygen tents, nebulizers, catheters and hospital beds.
Medical Devices. Personal protective equipment (PPE) refers to protective clothing, helmets, gloves, face shields, goggles, facemasks and/or respirators or other equipment designed to protect the wearer from injury or the spread of infection or illness. PPE is commonly used in health care settings such as hospitals, doctorâs offices or clinical labs.