CASE STUDY 27.2 CRANBERRY JUICE AND BLADDER INFECTIONS

question 20

Multiple Choice

CASE STUDY 27.2
CRANBERRY JUICE AND BLADDER INFECTIONS
For Questions , use the following narrative
Narrative: Case study 27.2 summary
Researchers compared urinary bacteria levels of elderly women who drank 10 ounces of a juice drink containing cranberry juice each day to elderly women who consumed the same amount of a look-alike drink without cranberry juice (indistinguishable in taste, appearance, and vitamin C content from cranberry juice) .153 elderly women participated in this study.Each one was randomly assigned to the cranberry juice group or the placebo group and was followed over a 6-month period.The women had a mean age of 78.5 years and high levels of bacteria in their urine at the start of the study.The odds in the cranberry group of having bacteria levels exceeding a certain threshold were 42% of what they were in the control group.

-{Case study 27.2 narrative} Which negative effect was not being controlled for by using the placebo drink?

• A)The placebo effect.
• B)The interaction effect.
• C)The experimenter effect.
• D)All of the above were being controlled for with the placebo drink.

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