A multivariate Cox regression analysis identified three independent factors predicting death: log-normalized CGA concentration (hazard ratio (HR), 7.25; 95% confidence interval (CI), 3.00 to 17.50), SAPS II (HR, 1.05; 95% CI, 1.03 to 1.07), and cardiogenic shock (HR, 3.92; 95% CI, 1.73 to 8.88).
Two-year DFS in patients with elevated preoperative S-100B concentrations was 34% versus 61% for patients without elevated preoperative S-100B concentrations (hazard ratio [HR] 2.6, P = .03).03
In our survival analysis, we found a significant association between time from jaundice to death and serum aflatoxin B1 lysine adduct concentration (adjusted hazard ratio = 1.3; 95% CI, 1.04 1.6; p = 0.02).
The vapor pressure is a main factor to determine the concentration and hazards of gaseous products during bitumen decomposition.
Lactation is a considerable source of exposure for infants, and reference concentrations for hazard assessments are needed.
In 2007, a synthetic turf recreational field in Newark, New Jersey, was closed because lead was found in synthetic turf fibers and in surface dust at concentrations exceeding hazard criteria.
A chronic inflammatory infiltrate remained an independent prognostic indicator on multivariate analysis when analysed with stage, age, sex, tumour grade, and serum CRP concentrations (P=0.013, hazard ratio 7.7 (1.5–38.0 95% CI); Cox's proportional hazards model).
This criteria contains an evaluation of the risk related to the concentration of the hazard (growth and high concentrations are required to produce the amount of enterotoxin causing disease) (FAO/WHO, 2002).
In both treatment groups, the risk of hypoglycaemia requiring medical assistance increased with each 1% unit increment in the average updated haemoglobin A1C concentration (standard arm: hazard ratio 1.76, 95% CI 1.50 to 2.06; intensive arm: hazard ratio 1.15, 95% CI 1.02 to 1.21).
Using the EC10 for the individual species the HC5 (Hazard Concentration at the 5% level) was estimated to be between 25 and 36 mg Cu kg− 1 soil, depending on the exposure duration.
Selection of concentration levels for hazard evaluation based on real-world exposure scenarios is desirable.
