Sentence examples for for fourth quartile from inspiring English sources

By structural groups, AORs were elevated about 50% for fourth quartile levels of metals and chlorinated solvents (Table 3), and the AOR was also elevated for the third quartile level of metals.

In contrast, there was no evidence of IQ having any effect on mortality in women (adjusted HR for fourth quartile v first quartile 1.09 (95% CI 0.68 to 1.79) v 1.00 (ref); table 4).

Results: Across all countries, adjusting for seasonality, PM2.5 was not associated with preterm birth, but was associated with low birth weight [odds ratio (OR) = 1.22; 95% CI: 1.07, 1.39 for fourth quartile of PM2.5 (> 20.2 μg/m) compared with the first quartile (< 6.3 μg/m)].

Similarly in a nested case control study of 592 lung cancer patients and 670 controls pre-diagnostic elevated C-reactive protein was found to be associated with increased risk of lung cancer development (odds ratio [OR], 1.98; 95% CI, 1.35 to 2.89; P-trend < .001 for fourth quartile [Q4, ≥5.6 mg/L] v Q1 [< 1.0 mg/L]) [ 14].

The median WBC count for first quartile was 0 cells/μL (IQR 0 – 1.0) while that for the remaining subjects was 2.0 cells (IQR 0 – 8.3 cells) (p = 0.009; t-test).

When father's and own educational attainment was adjusted for, the mortality risk was highest in the 25% of women with the highest cognitive ability (adjusted HR for first quartile v fourth quartile 1.00 (ref) v 0.80 (95% CI 0.48 to 1.34)).

In logistic regression models that included a single chemical group, the adjusted odds ratios (AORs) for the mechanistic groups were slightly elevated for the fourth quartile levels (1.3 for endocrine disruptors and 1.4 for developmental toxicants (Table 3).

However, children whose mothers had higher PFOS levels were more likely to start sitting without support at a later age; the adjusted HRs were 0.85 (95% CI, 0.72 0.99) for the third quartile and 0.86 (95% CI, 0.73 1.01) for the fourth quartile (p for trend = 0.041) compared with the first quartile.

Adjusting for these three groups simultaneously led to decreased risks for the solvents and increased risk for metals (AORs for metals: fourth quartile = 1.7; 95% CI, 1.0 3.0; third quartile = 1.95; 95% CI, 1.2 3.1).

Compared with the lowest quartile of blood Pb, the OR for hyperhomocysteinemia was 1.69 (95% CI, 1.00 to 2.85) for the fourth quartile when the model was adjusted for age, gender, folate and vitamin B12.

In the smoking-adjusted analysis, the third quartile of BCd exposure relative to the lowest level showed a larger estimated effect (SBP: β = 1.85 mmHg; 95% CI, 0.52 3.19; DBP: β = 2.01 mmHg; 95% CI, 0.86 3.15) than did the second quartile; however, for both SBP and DBP, the effect estimate for the fourth quartile was attenuated relative to that of the third (Tellez-Plaza et al. 2008).