The GEE model included the following covariates: race-sex group, exam year, study center, and time-dependent age, time-dependent height and height-squared, year 5 waist circumference and time-dependent change in waist circumference, time-dependent cumulative pack-years of cigarette exposure, and quartiles of fibrinogen or CRP.
Time-dependent smoking habits, time-dependent age more than 50 years, and allergic status were not included in the final model, and exclusion from the model had minimal impact on coefficients for the exposures of interest.
Therefore, for each cancer, we used multivariate Poisson regression to compute incidence rate ratios with 95% confidence intervals comparing incidence during each period, with adjustment for current age (time dependent, single years), sex, and the cumulative duration of transplant function (time dependent, years).
Analysis and tackling of time-dependent aging wearout effects are important design objectives in microprocessor designs.
This is the averaging method considered in theories, and has the advantage allowing estimation of the time-dependent aging of the system.
Purpose of the project is to make indoor arrangement to ensure that the building that is important for the city satisfies to today's needs, to offer solution suggestions to users for new services and to prevent the destruction of the building due to time-dependent aging process.
Many small laboratory fish such as the guppy, the zebrafish, and the medaka, and the annual killifish are characterized by a regular time-dependent aging similar to that of other vertebrates [2], [3], [4], [5].
Force of infection can be estimated as time-dependent, age-dependent, or both.
We did not introduce a time dependent covariate for age because all patients were enrolled at their 65th birthday, so that age was already accounted for in duration of follow-up.
We did all analyses for these endpoints both with and without time dependent coefficients for age.
