On the other hand, Azab and colleagues divided patients enrolled in their analysis in four quartiles; the highest NLR quartile (NLR > 3.3) had higher 1-year and 5-year mortality rates compared with those in the lowest quartile (NLR < 1.8) [ 18].
The analysis of C1INH activity in quartiles (Q) was conducted in terms of RCT of human purified C1INH (Bicizar, Russia).
Conditional logistic regression analysis using categorical methylation in quartiles is reported in Table 1 and shows a marked decrease of breast cancer risk with increasing mean β values.
For analysis, age was examined in quartiles rounded to the year: 0 to <4; 4 to <7; 7 to <12; and 12 to <17.
For the main analysis, exposure was modeled in quartiles of PFC concentration, with quartiles formed in the population overall and separately for the age/sex group used in the analysis.
However, this could not be confirmed in our analysis of quartiles of sodium intake in relation to overall mortality (RR = 0.98 in CVD free subjects with median sodium excretion of 190 mmol/24 h).
The relatively large sample size allowed analysis of mean homocysteine concentration in quartiles of blood Pb.
In the quartile analysis, the 2nd quartile is the "low" exposure quartile, assuming the 1st quartile is non-exposed.
This can also be seen from the quartile analysis in the present study, with fairly flat relationships across the wide maraviroc exposure ranges but a sharp increase in success from the placebo group to the first quartile.
(Test for non-linearity, men: p-value <0.01; women: p-value <0.01) The overall spline analyses were concordant with the results from quartile analysis in Tables 2 and 3.
