Epidemiologists decided to investigate the effect of sunscreens on sunburns.They ran an epidemiologic study to see the association of sunscreens and sunburns.Overall,460 people have enrolled in the study.Investigators randomly allocated 230 people to the treatment group (sunscreens) and 230 to the control group (placebo) .They exposed those 460 people to the high mountain trail on a sunny day.At the end of the study,30 people developed sunburns in the sunscreen group and 130 people developed sunburns in the placebo group.What type of study design is this?

A) Cross-sectional study
B) Prospective cohort study
C) Case-control study
D) Randomized trial
E) Case-control study.

Pulse oximetry can be used to help diagnose ________, in which breathing pauses during sleep.

This test is done at 36-37 weeks to look for bacteria that can cause pneumonia or serious infection in newborn

A) ​glucose challenge screening
B) ​glucose tolerance test
C) ​Group B streptococcus
D) ​maternal serum screen
E) ​nonstress test
F) ​ultrasound exam
G) ​urine test

Which of the following is a condition in which the heart pumps too weakly to supply the body with blood?

A) embolism
B) heart failure
C) cerebrovascular accident (CVA)
D) coronary artery disease

The appointment scheduling system that is based on the reality that some patients will arrive late and others will require more or less time than expected with the physician is ____.

A) time-specified scheduling
B) wave scheduling
C) double-booking
D) cluster scheduling
E) stream scheduling

The hepatic duct merges with the cystic duct from the gallbladder to form the ________ duct, which delivers bile to the duodenum.

When listing individuals as references, it is professional to ____..

A) ask their permission
B) assume that your preceptors are willing to provide a reference
C) ask a friend to be a reference
D) place the list at the bottom of the résumé
E) include no fewer than 10 references

A quality ________ program is a component of a quality assurance program. Its focus is to ensure accuracy in test results through careful monitoring of test procedures.

When is the best time for a man to perform a testicular self-exam?

A) Before getting out of bed in the morning
B) Immediately after having sexual intercourse
C) After taking a shower or bath
D) Just after going to bed at night
E) Immediately after strenuous exercise

The hormone ____ lowers blood calcium by activating osteoblasts, which use excess blood calcium to build new bone tissue.

A) cortisol
B) glucagon
C) calcitonin
D) oxytocin
E) melatonin