Sentence examples for required group size from inspiring English sources
If the baseline exacerbation rate was 1.0 rather than 1.13 then the required group size per arm would be 260.
Assuming the alternative hypothesis to test for equality (0.27true ≠ 0.50reference), with α = 0.05 and 1 − β = 0.90, the required group size was 46 (Chow et al., 2012).
If the "k" parameter was 0.4 then the required group size per arm would have been 230, if 0.6 then it would have been 262.
For this analyses, participants will be grouped in two categories of quality of decision making, resulting in a total required group size at T0 of N = 460.
These parameters, with a confidence level of 95% and a power of 80% yield an estimated required group size per arm of 239, which allowing for a 15% drop out rate (greater than the 10% found in the Housing, Insulation and Health study for the over 65s due to the greater illness of this study population) suggested an initial sample size of 550 participants.
It is important to note that it is difficult to obtain quantitative data on airborne transmission in ferrets to compare efficiency of transmission between human and avian viruses, in part due to animal ethics considerations in relation to the required group size.
We also consulted recent QST studies and a review regarding DNIC to estimate the required group sizes.
Enter the required group information.
