We also created time-dependent indicator variates for the presence of daily urinary output above 3 l and for the use of mannitol and hypertonic saline solutions, and created time-dependent continuous variates for glucose levels and hyperglycemia (two daily serum glucose values above 10 mmol/l).
We created time-dependent variables for cumulative lifetime exposure (from birth to death or end of eligibility for outcome at age 1 year) and for gestational exposure (for total pregnancy and each trimester) to each pollutant (TSP, PM10, PM2.5, and PM10 2.5).
The systematically applied loading protocols indicate that vertical component of motion may create time-dependent variations on pendulum's oscillation period; yet most dramatic impact on response is produced by the tilting (rocking) component.
was used to create time lapse movies.
LTCI data was used to create time-independent and time-dependent service utilization variables.
We created five time-dependent variables to quantify the direction, degree, and duration of change in a patient's risk score prior to each hospitalization day.
The years of starting and stopping smoking were used to create a time-dependent variable for smoking habits.
Next, the number of days for day care services and the number of hours for home help services were added to calculate the cumulative amount of each service utilized during the observation period; these amounts were respectively divided by the number of months of observation in order to create a time-dependent variable of "mean amount of use".
The temporal analyses showed how large events, such as Oktoberfest, create spatial clusters that are time dependent.
For the regression analyses, time dependent variables were created for some variables: for extra articular disease (EAD), the variable time-EAD indicates when EAD occurred and time t when a CVE or a censoring has occurred.
To test whether the association between length of stay and odds of death within 30 days after discharge was a time dependent interaction, we created a product interaction term.
