quartile

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quartile

Astrology denoting an aspect of two heavenly bodies when their longitudes differ by 90?

quartile

[′kwȯr‚tīl]
(statistics)
The value of any of the three random variables which separate the frequency of a distribution into four equal parts.
References in periodicals archive ?
5] (n = 361,560) Coefficient (95% CI) p-Value Systolic blood pressure 1st Quartile Reference -- 2nd Quartile -0.
Intensive lifestyle modification reduces absolute risk in all patients proportionate to risk quartile (from 5% reduction for the lowest quartile to 28% for the highest).
The weighted kappa (with squared [quadratic] weights) between round 2 and round 4 quartiles was only 0.
Index Name *** STOXX Europe 600 Optimised Market Quartile Indices ***
The remaining bidders who have positive ratings (in absolute value) are again split into quartiles.
The investigators then conducted a logistic regression analysis that compared the lowest quartile to the three higher quartiles.
Using random effects models (DerSimonian & Laird, 1986; Littell, Milliken, Stroup, & Wolfinger, 1996), we calculated pooled odds ratios of patient outcomes and relative changes in LOS corresponding to an increase of one RN full-time equivalent per patient day (Kravitz & Sauve, 2002) (RN FTE/patient day) in linear dose response models and among quartiles of RN FTE/ patient day distributions.
After the women were stratified into quartiles of CVD risk, those with the highest risk were more than three times as likely to develop OA as were women in the lowest-risk quartile.
0), and for being in the highest quartiles of body fat percentage (OR = 2.
Throughout this analysis, we divided our sample into quartiles by Zip Code median income obtained from the U.