A process that involves selecting a standard population and then applying the rates from the populations under comparison (the observed populations) to establish new rates that would be expected from the standard population is known as ____.

The most common reasons for the constant pressure that causes a decubitus ulcer is ________

a. lying in bed or sitting in a wheelchair too long without being repositioned b. wearing shoes that are too tight c. walking too long on hard surfaces such as cement sidewalks d. excessive handling of tennis rackets, baseball bats, snow shovels, and other objects that can irritate the hands

Depression is thought to be caused by

a. decreased levels of NE and/or serotonin. b. increased levels of NE and/or serotonin. c. decreased levels of dopamine. d. increased levels of dopamine.