market research process, including identification of a research question, data collection, analysis, and reporting of results. As they discuss data analysis, the authors introduce statistical techniques that are commonly used in market research and demonstrate how to perform each of these using Stata....
Statistical process control (SPC), an industrial sphere initiative, has recently been applied in health care and public health surveillance. SPC methods assume independent observations and process autocorrelation has been associated with increase in false alarm frequency. Methods Monthly mean raw mortality...
On the unit interval, 10 evenly spaced points suffice to sample with no more distance than 0.1 between them; however a unit square requires 100 points, and a unit cube requires 1000 points. Many multivariate statistical procedures suffer from the curse of dimensionality. Adding variables to an ...
drafting of the manuscript (Sebastian Herlitz Joel Ohm, and Per Svensson), critical revision of the manuscript for important intellectual content (Sebastian Herlitz, Joel Ohm, Henrike Häbel, Ulf Ekelund, Robin Hofmann, and Per Svensson), statistical expertise (Henrike Häbel), and acquisition ...
Data from the clinical protocol was codified into a password-protected MS Excel spreadsheet with a secured data entry interface. Statistical comparison used p-values generated by t-test for continuous variables and Chi2 testing for binary/categorical variables. Analysis used STATA/BE 18.0 tables. 3...
particularities should be considered in order to control for potential confounders, such as environmental regulations. Nevertheless, readers should note that we did not intend to be rigorous in the analysis of control variables; we only included them as necessary statistical controls (Hünermund & ...
In the model, participants will be the random effects with a fixed factor for group and time and the corresponding interaction (group × time), adjusted for baseline values. Statistical significance is considered to have been achieved at p < 0.05, and the Stata 17 (StataCorp, ...
Data analysis was implemented using Stata statistical software, version 15 (StataCorp LP, College Station, TX, USA). The pooled prevalence of disrespect and abuse of women during the process of childbirth at health facilities with 95%CI was calculated using the random effects model, due to the...
Following the statistical measuring, the two tests for over identification were conducted, along with the Arellano and Bond test for serial autocorrelation. Roodman et al. [73] emphasizes that when estimating dynamic models using panel data, it is preferable for the number of periods, T, to be...
3.2. Data analysis This study implements a two-phase data analysis using Stata/SE 15.0 to analyze the main determinants of the bioenergy innovation process and to identify the relevant behavioral patterns affecting the innovators' decision-making. First, similar to Akimoto et al. [44], this study...