Cancer development is widely recognized to be a somatic cell evolutionary process with complex dynamics and highly variable time frames.
Those that progress to overt malignancy do so over variable time frames spanning approximately 1 to 50 years.
Variable time frames were considered: in-hospital infections [ 26], 90-day post-operative period [ 8], 12-month post-operative period [ 30], and 3-year post-operative period [ 32].
Information gathered separately from program records (results not shown), although imprecise due to different record-keeping procedures and variable time frames across programs, indicate that retention rates exceeded 80% over a 2-year period.
Therefore, to ensure that we were measuring differences in socioeconomic conditions and not the presence or absence of the ecotone habitat in CBGs, we also calculated adjusted odds ratios for each variable and time frame by using Mantel-Haenszel tests.
The conclusions are limited to the particular sample, variables, and time frame represented by the data-set [ 35].
Notwithstanding, and as we have more than 1-year pre-reform data, we can compare the trends in the outcome variable during the time frame prior to 2012 for both treatment group companies and their non-treated counterparts.
Violence, condom use and alcohol abuse variables lacked time frames.
To ensure consistent coding of transients regardless of localization within codec frames, the SBR frames have variable time boundaries, that is, the exact duration in time covered by one SBR frame may vary from frame to frame.
An F4-model instead of an F3-model was necessary for the pain variable to cover the same time frame as the physiological variables, since pain was measured every 10 min and not as an average of continuously measured 10-min intervals.
