We multiplied the cluster design effect (1.4) by the earlier calculated sample size of 101 farms to arrive at a total of 141 farms.
17 18 While determining the predictors of survival in older age groups, Wolfson et al 19 were unable to determine the estimated probability of survival in early-onset AD after adjustment for rapid progression (length bias) because of a small early-onset sample size.
As noted earlier, the small sample size may not have detected important group, time, and interaction differences.
Based on the equation noted earlier (1), the sample size requirements for different Ws for the treatment, diagnosis, and prognosis categories are shown in Table 1.
Although most evidence argues against Neandertals interbreeding with early humans, the sample size is still too low to be definitive, says molecular archaeologist Carney Matheson of Lakehead University in Ontario, Canada.
Compared with early studies, the sample size of the present study was moderate.
As early-stage tumor sample size is usually small, therefore it is only possible to obtain small amounts of material, for example, fine needle aspiration [13] [15].
First, this is an early-view study; sample size was limited because the medications assessed have only been recently approved.
Earlier, several guidelines on sample size in factor analysis have been proposed.
For other biases we described any other trial features that could have affected the trial's results (for example, whether a trial was stopped early or if no sample size calculation was included).
