Although some constituents of GAGs have an inhibitory role, others could even promote CaOx crystallization [17,42,46]. and children with urolithiasis were divided into subgroups relating to age median criteria (indicated in weeks, mo.). Healthy children are consequently divided into 2 independent subgroups; a subgroup of younger children (YC) (= 13) and a subgroup of older children (OC) (= 12). Accordingly, children with urolithiasis also created 2 subgroups, YC (= 31) and OC (= 30), using the median for healthy children. The age median of children was identified for individual YC and OC subgroups. Differences between healthy children vs. children with urolithiasis of both YC and OC subgroups are analyzed. Ca and Ca/Cit are the only variables differentiating YC subgroups with significantly higher ideals for children with urolithiasis. OC Rabbit polyclonal to YSA1H CB30865 subgroups experienced significantly higher ideals in healthy children for the Cit, Ca/Cit, Ox/GAG, Ox/Cit, Ox/(Cit GAG) variables (Table 1 and Table 2). Table 1 Descriptive statistics and MannCWhitney U-test for YC with urolithiasis and matched control group of healthy children (M = male, F = female). = 25)= 61)Value= 13)= 31), M:F = 18:13= 25)= 61)Value= 12)= 30), M:F = 22:8= 0.008). These variations were further tested by post-hoc MannCWhitney U test with our childrens median ideals for gender (female 109 mo. and 127 mo. for male children). We found significant variations in the variables mentioned above concerning excretion of Ca (female YC vs. male OC and male YC vs. male OC). Significant variations were found also for Cit excretion (female YC vs. male OC, female YC vs. female OC and male YC vs. male OC (Number 1). Excretion of Ox was not statistically significant. Open in a separate window Number 1 Possible gender variations between subgroups were tested from the KruskalCWallis test and Bonferroni multiple comparisons. Differences between female YC vs. OC male organizations (= 0.008) were further test by post-hoc MannCWhitney U test in accordance with cut-off values to our gender median (female 109 mo. and male 127 mo.). Significant variations were found for Ca (female YC vs. male OC and male YC vs. male OC) in section (A) and Cit excretion (female YC vs. male OC, female YC vs. female OC, and male YC CB30865 vs. male OC) in section (B). Our group of CB30865 children was cautiously selected to fully communicate promoter/inhibitor ratios and GAGs in adherence with inclusion/exclusion criteria. Therefore, they represent a relatively homogenized group by excluding all potent and already known CB30865 promoters. The producing cohort of children has no prominent stone-forming predictors. The drawback of such criteria are relatively small organizations with limited probability to form strong conclusions. Consequently, the above-listed variables of children were analyzed using ROC analysis. Judging by their AUC and = 13) vs. YC with Urolithiasis (= 31)= 12) vs. OC with Urolithiasis (= 30) VariablesCut-off valueAUCSensitivitySpecificity= 12)Healthy children (= 9)Urolithiasis (= 3)Urolithiasis (= 30)Healthy children (= 1)Urolithiasis (= 29) Open in a separate windows DECISION NODE 1 IF Ox/(Cit GAG) percentage 0.22 THEN group = healthy children (precision 6.0/1.0) ELSE IF Ox(Cit GAG) percentage 0.22 THEN DECISION NODE 2 ? DECISION NODE 2 IF Ca/Cit percentage 0.612 THEN group = healthy children (precision 3.0/1.0) ELSE IF Ca/Cit percentage 0.612 THEN group = urolithiasis (precision 29.0/3.0) The quantity of correctly classified children is 38 of 42, i.e., 90.8%, with CB30865 Kappa statistics of 0.754 (Table.