Data entry was completed by a single research assistant who inspected data for errors once the data file was complete.
We also examined the absolute differences in BMI, heights and weights across measured BMI-categories for participants with and without clinical OA and compared the groups using independent sample t-tests after having inspected data for normality (examining histograms).
As a key feature, multiple graphs are generated for inspecting data integrity during the data acquisition process, helping instrument operators to identify problems early.
Another important feature of the tool is the vast community behind the platform, supported by the number of publications and the rich array of graphs available for inspecting data integrity.
In this view, according to Iedema et al (2005), one can distinguish between moralizing and disciplinary devices, the latter useful for inspecting data generation and analysis, performance monitoring and management, accreditation, guidelines and protocol production and implementation, and the close integration of clinical and financial data [ 31].
A preliminary analysis was first conducted to inspect the data for completeness and accuracy and to help determine which questionnaire items to use to construct the latent variables for the study.
A histogram of pairwise distances to inspect the data for the presence of somatic mutations was performed using the software GenoType v1.2 [ 35].
The training dataset (two-thirds of the samples) and the validation dataset (remaining one-third) were hierarchically clustered as a means to visually inspect the data for outliers, prior to developing and validating the gene signature model.
Because olive trees are propagated vegetatively, we plotted a histogram of pairwise distances to inspect the data for the presence of somatic mutations within clones and to take possible genotyping errors into account.
