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Proportional hazards assumptions will be tested using visual inspection, log (−log) plots, and interaction terms with time; if the necessary assumptions are violated, piecewise models will be fitted.
Tags should be affixed at access locations and should include a daily inspection log that is signed and dated each day.
Similar(58)
On-site processing of the cores included visual inspection, logging, and density determinations by personnel wearing Tyvek suits and powder-free Latex gloves.
Upon visual inspection, logging the values made a substantial improvement toward the approximation of a normal distribution.
Mr. Vance's announcement said his investigation had explored whether the practice of falsifying inspection logs had been directed or condoned by upper management and only found evidence sufficient to charge the 10 employees.
Crash cart inspection logs were explicitly examined, and the electronic archive records of the defibrillators were interrogated.
The assumption of proportional hazards was checked by inspection of log minus log plots.
Inspection of log-log plots suggested that these relationships were similar for different species and sample sources (Fig. 3), so we ignored species and source in our analyses.
The proportional-hazards assumption was verified by inspection of log-log plots.
We examined the proportional hazard assumption by visual inspection of log-log-survival plots.
Deviation from the proportional hazards assumption was evaluated by Schoenfeld residuals and by inspection of log-log plots.
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