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We divided the genes into four subgroups based on three quartile points of normalized read-counts as determined by the Illumina RNA-seq data.
The risk of having a positive GCT (≥7.8 mmol/l) was determined in association with subcutaneous and visceral adipose tissue depths above their respective upper-quartile values relative to their bottom three quartile values.
Women in the highest quartile category of proanthocyanidins with ⩾3 mers vs the first three quartile categories had an OR for endometrial cancer of 0.66 (95% CI=0.48 0.89).
In females, the association between hyper-keratosis and OGG1 expression showed some evidence of a dose-dependent increased risk in the first three quartile groups, although the trend was not statistically significant (p = 0.22).
Samples were then divided into three quartile groups for PFOS and PFOA combined: low-PFAA group (n = 29) with summed quartile score of 2 3, intermediate-PFAA group (n = 48) with score of 4 6, and high-PFAA group (n = 28) with score of 7 8.
Approximately one-half of the participants (the first [Q1] and second [Q2] quartile groups) had homocysteine levels in the normal range (<14 μmol/L), and three-quarters of the participants (the first three quartile groups, Q1 Q3) had cholesterol levels in the normal range (<200 mg/dL).
Similar(52)
Age dummies represent first three quartiles of sample firms ranked by age.
The real performance of these estimators will be evaluated for the three quartiles on the basis of data from two real populations using different sampling designs.
The first three quartiles had similar risks of BPH diagnosis.
The lowest quartile (age <37 years) was compared with the top three quartiles, and the highest quartile (age >52) was compared with the bottom three quartiles.
‡Each cytokine is dichotomized into top quartile and lower three quartiles, the reference for each cytokine is the lower three quartiles.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com