A&D TM-2430-13 instruction manual 95% confidence interval is expressed

Term/Abbreviation	Description
c.i., Confidence Interval	Interval surrounded by the confidence limit
	of 95%.
	95% confidence interval is expressed in
	numerical data with the cosinor analysis
	graph.
PR (Percent Rhythm)	Rhythm compatibility
	Squared multiple correlation coefficient (R)
	between the measured value and the
	cosine curve best fitted to the biological
	rhythm data.
	The closer to one a PR value is, the better
	a regression line fits.
	For example, when a PR value is greater
	than 0.5, the cosinor analysis is considered
	as valid.
Variation Index	Variation index of rhythm [%].
	Numerical value obtained as described
	below.
	Difference between the maximum value
	and minimum value of the cosine curve
	best fitted to the biological rhythm data
	divided by the maximum value.
	When the maximum value is the blood
	pressure obtained by day and the minimum
	value is the blood pressure obtained at
	night, the variation index can be useful to
	judge clinical dipper and non-dipper
	rhythms.
	For example, the fall rate of the mean blood
	pressure during sleep (at night) to the
	mean blood pressure while awake (by day)
	is indicated as below:
	0% to 10%: non-dipper
	10% to 20%: dipper
	20% or over: extreme-dipper

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