(1) Subjects in the highest quartile of the insulin distribution had 6.6 times the risk of developing type II diabetes as subjects in the remaining three quartiles combined (95% confidence interval [CI] = 3.14-13.7).
(2) The effects of low-chromium diets containing chromium in the lowest quartile of normal intake on glucose tolerance and related variables in 11 females and 6 male subjects were evaluated.
(3) When divided into quartiles based on the central adiposity ratio, only women in the fourth quartile (those with the highest central to peripheral body fat distribution) demonstrated an increased risk for breast cancer.
(4) Although calculation of the observed heart rate as a percent of that expected at the midpoint and end of each quartile of exercise used fewer observations, it provided similar results.
(5) Children consistently in the highest BP quartile had greater relative weight and higher heart rates in all three positions.
(6) Children in the upper two quartiles of fiber intake were estimated to have a 30 per cent lower risk of appendicitis than children in the lowest quartile.
(7) The lowest quartile of AMC was found most reliably by measuring plasma methionine, histidine, leucine and isoleucine concentrations.
(8) For a score based on consumption of only the 3 specified salad items the odds ratio over the extreme quartiles was 0.12 (0.05-0.32).
(9) Infants in the third quartile were fussy at the commencement of the period and became gradually more placid from the fifth week of life.
(10) Four hundred thirty-four patients (234 men, 200 women) greater than 40 years of age were stratified by gender and then divided into quartiles on the basis of a B-mode score that was derived by summing arterial wall thickness at nine sites in the left and nine sites in the right carotid arteries.
(11) The median (25,75 quartiles) rate of muscle protein synthesis after an overnight fast was 2.03 (2.00,2.23) % days-1 when the precursor enrichment was obtained by measurement of the plasma alpha-ketoisocaproate, taken to be representative of muscle free leucine.
(12) Mortality was as high as 81% in the bottom quartile (PHDL less than 13%), with a relative mortality risk of 1.71 for subjects in the bottom quartile compared to those in the top quartile (PHDL greater than or equal to 19%).
(13) The major finding was an inverse relationship between fruit intake and risk of oral and pharyngeal cancer; individuals in the highest quartile of intake had about half the risk of those in the lowest quartile.
(14) Those in the top and bottom quartiles on intrinsic motivation were classified as either relatively task intrinsically motivated or task extrinsically motivated and were assigned to behavior regulation conditions: self-regulated reinforcement, externally imposed reinforcement, or control.
(15) Three data reduction methods are discussed: the classification with respect to frequency bands, the search for prominent frequencies, and the computation of quartiles of the frequency spectra.
(16) Tumor latency decreased with increasing dose of MNU, but the quartiles for time to detection of all tumors within each carcinogen dose group were similar irrespective of anatomical region in which the tumors occurred.
(17) This was true not only for the relation between average latencies but also for the relation between corresponding quartiles of latency distributions.
(18) Epidemiologic analysis demonstrated a fivefold decrease in risk for severe ASCAD between the lowest and the highest quartile of total testosterone.
(19) The relative risk of developing proteinuria after 4 years for those with glycosylated hemoglobin levels in the highest quartile compared with those in the lowest quartile was 3.0 (95% confidence interval, 1.6 to 5.3).
(20) Median followup period was 6.5 years, quartiles 5.5 and 8.0 years.
Quartine
Definition:
(n.) A supposed fourth integument of an ovule, counting from the outside.