Sentence examples for used a standard deviation from inspiring English sources
22 Calculations used a standard deviation of 1.4% and a correlation between measures of 0.8.
We used a standard deviation of 1.5 points, alpha was set at 0.05 and the power was set at 0.9.
We considered a minimal important difference of 10 points between the two groups at 12 months follow-up to be of clinical relevance [ 66– 69] and used a standard deviation of 16.7 and 16.1 postoperatively [ 24].
Since in the current study a 100 mm VAS pain scale will be used a standard deviation of 25 mm and a mean difference of 15 mm are consistent with the earlier study [ 22].
Sample size calculation for detecting change in systolic blood pressure as the primary outcome used a standard deviation of 15 mm Hg was used based on prior studies that have reported standard deviations ranging from 10 to 20 mm Hg. 15 mm Hg was also the standard deviation used to calculate sample size for a recent study [ 17].
26 38 For the sense of competence questionnaire, we defined a minimal clinically important difference as a 5 point change on a scale from 27 to 135 (higher score reflects a greater sense of competence) and used a standard deviation of 8 in the sample size calculation.
A set of 10,000 corresponding target variable values were then generated by adding random normal deviates to these auxiliary values using a standard deviation chosen by trial and error to give a particular level of correlation between the target and auxiliary variables.
Then, descriptors with constant, near-constant (using a standard deviation of 0.25 as a threshold), or at least one missing value were removed.
In order to identify a difference of 0.5 mm at the 0.05 level of significance with 80% power, using a standard deviation (SD) of 0.8, 41 patients were required in each group.
For both nucleotide states, the average of the set using a standard deviation of 15 gave the best match, indicating that the angular disorder is ∼15°.
Using a standard deviation (SD) for anandamide of approximately 4 pmoles/ml, the power was 0.9 to detect a difference of 2.2 pmoles/ml (standardized difference 0.53) and power of 0.8 to detect a difference of 1.8 pmoles/ml (standardized difference 0.45) at alpha = 0.05 with an expected total sample size of 150.
