These cutoff frequencies are 20 and 120 kHz, and can be selected by the telemetry command.
These cutoff values have a validated sensitivity of 100% for dementia [16].
These cutoff points correspond to a high school, college, and post-college (graduate study) education level, respectively.
In addition, these cutoff points can be decided a posteriori, that is, researchers can choose the most convenient value based on the results obtained.
With these cutoff values, a new multiple logistic regression model is built to study the effect of combined elevation (above cutoff) of CK and sMb.
The comparison of the results of studies with maximum ages of patients less than or above these cutoff ages showed no significant differences.
In the 1970s and 1980s it became possible to do experimental verification of the accuracy of these cosmic ray cutoff determinations and also to design experiments based on these cutoff rigidity calculations.
Figure 6b shows the response characteristics of the digital filters for 128, 64, and 32 Hz sampling frequencies, with cutoff frequencies at 55, 28, and 14 Hz, respectively; these cutoff frequencies are far below those of analog signals.
Using these cutoff values, overall survival rates (in-hospital mortality) were calculated with the Kaplan Meier method, and differences in survival rates between groups were compared by the log-rank test.
These cutoff values were chosen to generate subgroups roughly corresponding to the lowest and highest quartiles.
These cutoff levels, while eliminating obviously aberrant comparisons, also resulted in rejection (due to ds values >1.5) of most comparisons of cyanobacterial sequences, many of which are obviously only minimally divergent (Figures 2, 5 and 6).
