To ensure the comparability of the training groups and the reference group, the geographical sites were categorized into 13 strata [ 24].
To help ensure comparability of the training and control groups, we stratified departments into 14 strata according to the following nested criteria: company, type of work task, size of department.
19 A training reference group of experienced academically based trainers in psychological therapy, who represented both the cognitive behavioural and person centred approaches, maximised the rigour, effectiveness, and comparability of the two training programmes.
Global application of model-based estimation using GLAS, while demanding significant consolidation of training data, would improve inter-comparability of international biomass estimates by imposing consistent methods and a globally coherent sample frame.
The administrative and clinical staff in Matlab and Dhaka received equivalent training to ensure comparability of care and DDSS data quality.
Moreover, there were many differences in the applied software, the frequency and duration of training and the choice of outcome measures, which reduce comparability between previous studies.
Overall, these results demonstrate high comparability of naevus counts between and within similarly trained examiners.
These tools would include artifacts or virtual tissue standards (known as "phantoms") that test and optimize hardware, software, and applications; provide training to users; and ensure comparability of measurements across instruments and institutions [ 24– 26].
Finally, comparability of the surgical treatment group and the pelvic floor training group might be affected by unknown confounders since for ethical reasons randomization was not possible.
A common international protocol was written to standardize data collection procedures, instruments, and training of staff and to enable comparability of measures across sites and to facilitate cross-country analyses.
