We then tested for trends in mortality rates using Poisson regression models stratified by gender, age group, and educational level, with death count as the outcome variable, person-years as the exposure variable, and year as the covariate.
Caffeine is readily measured in human serum and, in epidemiological studies, is one of the most variable small molecules measured [ 20], and this reflects its variable (person-specific) consumption levels.
Trends in relative inequalities were tested using Poisson regression models with death count as the outcome variable, person-years as the exposure variable, and year, educational level, and the interaction term education by year as covariates.
They encode three variables: person, number and tense, and are not segmentable; one prefix cannot be separated into the three parts.
The course of the disorder is extremely variable from person to person; it may be mild or severe, acute or chronic.
The contribution of genetic factors to diabetes risk, onset, and progression is estimated to be as high as 40%, but that number is highly variable from person to person.
While the optical properties and geometries of our phantoms are well-defined, the background optical properties and layered structure of human skin can be highly variable from person to person and on different parts of the body.
The variables persons in household and children in household only correlate significantly in the abstract problem formulation.
Certain groups were excluded to decrease risk to vulnerable individuals (children, severely depressed people, people with suicidal ideation) and to eliminate potential confounding variables (persons with co-occurring rheumatic and pituitary disease, therapy with medications known to alter HPA axis function), thus result may not generalize to such individuals.
The original variable total person's income was recoded into an ordinal scale and was, also, converted to logarithm-based values.
For the variable accompanying person groups neither differed in age (p = 0.363) nor gestational week (p = 0.996) or diagnosis.
