Fig. 5 Standard deviation of PQ events.
Fig. 6 Power spectral entropy Vs Standard deviation of PQ events.
To achieve this, within-trial variability was indexed by taking the square root of the standard deviation of the event-related waveform across time.
We recorded an average number of 144 contact events per person, per day, with a standard deviation of 141 contact events ((mathit{CV}^{2} =0.96)), thus very close to the characteristics of an exponential distribution ((mathit{CV}^{2} =1)).
In the precision context, the aim is to estimate a population parameter of interest such as the standard deviation of an outcome, or an event or prevalence rate.
† Mean and standard deviation of the number of events per cycle.
Event rates are presented as the mean (±standard deviation) of the (individual) number of events divided by the (individual) time under exposure (days) on ECMO/pECLA multiplied by 100 and were analyzed with the Mann–Whitney U test.
Coming at the start of the decolonisation period, the Federation of self-governing Southern Rhodesia with two directly ruled British protectorates was later described by the British historian Robert Blake as "an aberration of history a curious deviation from the inevitable course of events".
For each outcome, we abstracted the reported mean number of events, standard deviation, sample size, and observation time in months for treatment and control groups.
For this distribution (clearance mean of 29.8, standard deviation of 10.0), baseline (mean event rate of 0.51), effect size (log odds ratio of -0.22), sample size (n = 110) and alpha (0.01, two-tailed), the power is 1.00.
