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Researchers conducted a study using available state-level data for the US. They found a positive correlation between average state rates of cell-phone usage with average state rates of automobile fatalities. What kind of study is this?

Ecologic studies are good for generating hypotheses.

Who demonstrated the importance of hand washing to prevent the spread of disease?

Which of the following is not a benefit in conducting an ecologic study?

Implementing a physical activity and nutritional intervention in overweight people (i.e. people with central obesity) who are at risk for developing Type 2 diabetes is what kind of prevention? 

A patient in a hospital setting is struggling to sleep due to frequent nighttime awakenings. Which nursing intervention is most effective in promoting restful sleep?

A postoperative patient is on bed rest following abdominal surgery. The provider prescribes sequential compression devices (SCDs), early ambulation, and anticoagulant therapy to prevent deep vein thrombosis (DVT). Which intervention should the nurse implement first?

A nurse is discussing sleep requirements with a group of parents. Which statement by a parent indicates correct understanding of sleep needs across the lifespan?

A nurse is assessing a patient with insomnia. The patient reports difficulty falling asleep, waking up frequently, and feeling fatigued during the day. The nurse identifies which factor as most likely contributing to the sleep disturbance?

How will cheetahs use pheromones to increase their foraging success?