q biostat - medplus254

[ArchivalUser]

6. Two hundred hypertensive patients are randomized to either a diet program or an
exercise program. (102 patients to diet program, 98 patients to exercise program) Blood
pressure is measured on each patient both before the programs start and 3 months after
the start of each program. The correct statistical procedure to determine whether or not
the mean blood pressure change (after-before) was statistically significantly different for
the two programs is:
a.Paired t-test
b.2 sample unpaired t-test
c.Fisher’s exact test
d.None of the above

[ArchivalUser]

i think b

a is used when we measure mean bp changes before and after in the same group.

[ArchivalUser]

agree e B. 1 Nominal 2 groups (Diet 'Ex) 1 Interval"measurement" (BP)
thx medplus

[ArchivalUser]

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[ArchivalUser]

From the given the choices

B.

2 sample unpaired t-test.

Question points to change in BP.

[ArchivalUser]

B is correct