Investigating dose response relations on occupational mortality studies.

Investigating dose response relations in occupational mortality studies: something to keep in mind.

Acadesine and myocardial protection. Studies of time of administration and dose-response relations in the rat.

BACKGROUND Although there are many factors that might contribute to tissue injury during ischemia and reperfusion, the loss of adenine nucleotides has long been considered to be of importance. This has led to the study of interventions designed to limit the loss of nucleotides or to enhance the rate of nucleotide resynthesis during reperfusion. Alternatively, the breakdown of adenosine triphosp...

Investigating Discourse Relations

Ill this paper, we present the theoretica.1 foun(la.tions which underlie our current research. We emphasize a methodologicaJ point: connections among proposed theories of discourse structure must be carefiflly explicated. By making these connections, we ca.n (letermilm whether theories ma.ke equiva.lent claims, consistent 1)ut unrelated cla.ims or differ iu substa.ntive issues. A synthesis of c...

mortality forecasting based on lee-carter model

over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...

Dose-response relations between occupational exposures to physical and psychosocial factors and the risk of low back pain.

AIMS To assess dose-response relations between occupational exposures to physical and psychosocial factors and the risk of low back pain. METHODS A cohort of 523 subjects, working in nursing homes and homes for the elderly, was followed prospectively for one year. Physical load for different occupations was assessed by quantitative observations at the workplace. Information on low back pain a...