Provide a 95% CI for true mean SBP for this patient?

Hypertension

A patient who is taking antihypertensive medication is asked by her doctor to record her blood pressure at home to check that it is in the normotensive range. On each of 10 days, she took an average of two readings, with results as shown in Table 6.14.

Table 6.14: Home blood-pressure recordings for one patient

 

The doctor wants to assess whether the underlying mean SBP for this woman is <140 or ‰¥140 mm Hg.

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DBP (mm Hg) Day SBP (mm Hg) 1 121 87.5 109 81 3 117.5 91.5 125 94 5 125 87.5 129 90.5 123 90 85.5 118.5 123.5 87.5 89 10 127 Mean 121.85 88.40 sd 5.75 3.56 10 10