Campbell MK, Thomson S, Ramsay CR, MacLennan GS, Grimshaw JM: Sample size calculator for cluster randomised trials. Computers in Biology and Medicine. 2004, 34: 113-125. 10.1016/S0010-4825(03)00039-8. Article PubMed Google Scholar Donner A, Birkett N, Buck C: Randomization by cluster:...
Using the Raosoft sample size online calculator (http://www.raosoft.com/samplesize.html), a minimum sample size of 187 is needed to achieve a 6% margin of error, 90% confidence level, Sunway University and Sunway College population size of 22,000, and a 50% response distribution. Ethical ...
Power calculations were conducted using the mRnd online calculator to identify the effect size (odds ratio, OR) in both directions that could be detected based on the variance explained by the instruments and the sample sizes available [44]. Due to the absence of effect allele frequencies for ...
Effect Size Calculator—Cohen’s d, Cohen’s h, Phi(φ), R Squared, Eta Squared. Available online: https://www.statskingdom.com/effect-size-calculator.html (accessed on 12 December 2023). Zieliński, G.; Matysik-Woźniak, A.; Baszczowski, M.; Rapa, M.; Ginszt, M.; Pająk, ...
First, one has to be aware that the sample size of the current study was small, and that due to the extraordinary situation, we had a high percentage of missing data. Although multiple imputation methods were used, these circumstances may still be sources of greater bias when imputing missing...
Required sample size of the initial survey was estimated with the freely available QualtricsXMSample Size Calculator (Provo, UT, USA) considering that, according to market research, 4.74% of the Spanish population between 15 and 64 years of age uses CLs, that is, about 1,500,000 wearers. ...
study was to analyze the determinants of food preferences in a Polish population-based sample of primary school adolescents as part of the Diet and Activity of Youth during COVID-19 (DAY-19) Study. The DAY-19 Study focused on a national sample of a population of primary school adolescents ...
Food-related GHG emissions were calculated by multiplying the total weight of each food category in kilograms by the associated GHG emissions factor for that category in the Cool Food Calculator. Composite GHG emissions factors were calculated for the grain, nut and seed, and oil categories by ...