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Moreover, the sample size (20 patients) has been judged to be adequate based on the suggestions of the entropy-based approach to sample size in translational clinical trials (Piantadosi, 2005).
Rather, reliability estimates were inferred to be adequate based on data from the parent-instrument (the SF-36, Barthel Index, MMSE, etc) and on the expected stability of the attributes being measured by the PBSI (assuming no change in HRQL).
A sample size of 360 was calculated to be adequate, based on a margin of error of 5%, a confidence level of 95% and a response distribution of 50%[ 17].
A target sample size of 210 was determined to be adequate based on a power analysis incorporating the effect size for change in HbA1c observed in an uncontrolled pilot trial of the Project Dulce intervention (14, 15) and targeting a power of at least 0.90 with up to 30% attrition and a type 1 error rate of 5%.
Thus, a total sample size of 100 retrieval cases was judged to be adequate based on this analysis and previous research involving taper corrosion in MOM retrievals [ 11], in which researchers detected significant differences in taper corrosion between study groups using a sample size of approximately 100 retrievals.
When an EAR is not able to be set an AI, which is the average daily nutrient intake level that is assumed to be adequate, based on observed or experimentally determined nutrient intake estimates by a group of apparently healthy people, is used instead [ 31].
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When the interest is using CAC measurements for prognostic studies our results for kappa and ICCC show that ranking of subjects is adequate based on one CT scan.
His firm's processes were adequate based on the known threats, but have now been tightened, he said.
They claim this is adequate based on simulations where a married couple household earning $87,000 begins saving at age 37 using a 401k-type private account and makes "moderate" contributions.
The response rate of 67% was adequate, based on our previous experiences with questionnaires.
Reliability coefficients were adequate based on the current data (α = 0.65-0.82) and test-retest reliability (intraclass correlation coefficient 0.76) [ 25].
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