Sentence examples for quartile concentration from inspiring English sources

For fibrinogen, values >4.0 g/L are a valid clinical cut-off and correspond to the highest quartile concentration in the adult population [ 52].

However, infliximab maintenance was longer for SpA patients with trough concentrations above the first quartile (concentration > 6.5 mg/L; logrank = 0.05) than for other patients.

To test for trend across quartiles, we fitted the median quartile concentration values as a continuous variable in the logistic regression model.

For current asthma, we fit logistic regression models by quartile concentration categories of the metabolites (lowest concentration category as reference) and a second model with phthalate metabolites as continuous variables (log10-transformed).

Overall, the top quartile concentrations (highly impacted) of all pollutants were about three times higher than the lowest quartile within 7.5 km from LAX and two times higher at 12 km distance.

Phenoxyacetic acid was the only metabolite with a statistically significant association with longer time to pregnancy [fecundability OR = 0.82; 95% CI: 0.63, 1.06 for the second and third quartile combined; fecundability OR = 0.70; 95% CI: 0.52, 0.95 for a fourth-quartile (≥ 1.38 mg/L) vs. first-quartile concentration (< 0.14 mg/L)].

Quartile-concentration thresholds for the whole group were used for comparison.

Only taking ATI-positive samples into account (n=342), after stratification per quartile, a concentration-dependent trend was observed on CRP concentration (p=0.07) (figure 3B).

Tests for trend were conducted by modeling quartile median concentrations and calculating the Wald statistic.

Importantly, the second quartile POPs concentrations in the current population were similar to those in the highest quartile in the NHANES subjects.

Table 1 shows that incident cases and age-standard incidence rates of female total lung cancer, AC, and SCC based on the quartiles of concentration of each pollutant.