Unit 6 Stats L

Identify if the study is an experiment, retrospective study, or prospective study.

A study of women in Finland indicated that having sons shortened the lifespans of mothers by about 34 weeks per son, but that daughters helped to lengthen the mothers’ lives. The data came from church records from the period 1640 to 1870.

• Experiment

• Retrospective Study

• Prospective Study

Identify if the study is an experiment, retrospective study, or prospective study.

A researcher identifies 200 smokers and 200 non-smokers around the age of 20. The researchers then check in with them 30 years later to determine if they have developed heart disease.

• Experiment

• Retrospective Study

• Prospective Study

Identify if the study is an experiment, retrospective study, or prospective study.

Researchers recruited people with high cholesterol and split them into two groups. Group A was assigned to take a probiotic supplement while Group B was assigned to take a placebo. Group A, who took a probiotic supplement, saw their cholesterol drop by 9%.

• Experiment

• Retrospective Study

• Prospective Study

Identify the subjects:

Some people who race greyhounds give the dogs large doses of vitamin C in the belief that the dogs will run faster. Researchers assigned the greyhounds to three different dosages of vitamin C: 65 mg, 80 mg, and 95 mg. Researchers then examine the time it takes the greyhounds to complete the race.

• Vitamin C

• Greyhounds

• 65 mg, 80 mg, and 95 mg

• Race Time

Identify the treatments:

Some people who race greyhounds give the dogs large doses of vitamin C in the belief that the dogs will run faster. Researchers assigned the greyhounds to three different dosages of vitamin C: 65 mg, 80 mg, and 95 mg. Researchers then examine the time it takes the greyhounds to complete the race.

• Vitamin C

• Greyhounds

• 65 mg, 80 mg, and 95 mg

• Race Time

Identify the response:

Some people who race greyhounds give the dogs large doses of vitamin C in the belief that the dogs will run faster. Researchers assigned the greyhounds to three different dosages of vitamin C: 65 mg, 80 mg, and 95 mg. Researchers then examine the time it takes the greyhounds to complete the race.

• Vitamin C

• Greyhounds

• 65 mg, 80 mg, and 95 mg

• Race Time

Identify the subjects:

A new ointment has been created to treat shingles (a painful skin rash). 16 patients volunteer for the study. 8 are assigned to use the new ointment and 8 are assigned to use the old ointment. After 3 days, patients rate their pain levels post-medication.

• 16 patients

• New ointment and old ointment

• Pain-level rating

• Shingles

Identify the treatments:

A new ointment has been created to treat shingles (a painful skin rash). 16 patients volunteer for the study. 8 are assigned to use the new ointment and 8 are assigned to use the old ointment. After 3 days, patients rate their pain levels post-medication.

• 16 patients

• New ointment and old ointment

• Pain-level rating

• Shingles

Identify the response:

A new ointment has been created to treat shingles (a painful skin rash). 16 patients volunteer for the study. 8 are assigned to use the new ointment and 8 are assigned to use the old ointment. After 3 days, patients rate their pain levels post-medication.

• 16 patients

• New ointment and old ointment

• Pain-level rating

• Shingles

A “fake” treatment that looks just like the treatments being tested.

• Control Group

• Single-Blind

• Double-Blind

• Placebo