Answers to questions 12 and 13 Transcribed Image Text: a ch01 researchtoreality_worksheet Compatibility Mode- Design Layout References Mailings Review View O Tell me Nonye . v 11 v A A
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12. Drugs that can be used to treat high blood pressure are available by prescription.
When might it be necessary to prescribe a drug versus a “diet” for a person who has
high blood pressure?
13. do you think is the most important thing researchers learned from this study?
14. might be a complicating factor in designing and implementing a study of this
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Use the following graph to answer questions 4-14:
I Control diet
A Fruits-and-vegetables diet
• Combination diet
ful information about the graph:
132
Control diet = Diet typical of most
Americans.
Fruits-and-vegetables diet = More fruits
and vegetables, fewer snacks and treats,
but otherwise similar to the control diet.
Combination diet = Diet rich in fruits and
vegetables, but low in saturated fat, total
fat, and cholesterol.
The sodium content of all diets was similar.
Baseline = All subjects had been on the
control diet for three weeks at this point
and then were randomly assigned to an
intervention.
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Systolic blood pressure = The highest blood
pressure attained in arteries when the
heart is contracting; a normal systolic
pressure is about 110 mm Hg.
Diastolic blood pressure = The lowest blood
pressure attained in arteries when the
heart is relaxing; a normal diastolic
pressure is about 70 mm Hg.
This study involved adults with systolic
blood pressures of less than 160 mm Hg
and diastolic pressures of 80 to 95 mm
Hg.
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Base-
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Intervention week
Diastolic blood pressure (mmHg)
Systolic blood pressure (mmHg)
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