Evaluation of data quality involved the floor and ceiling effect (i.e. the percentage of patients scoring the highest or lowest possible score, where the lowest possible percentage is considered an acceptable criterion) and completeness of data (i.e. percentage of items and scales completed, where 90 95 % is considered an acceptable criterion).
As the high expectations for open data are translated into developing countries, where high standards in records management have not been the norm, it is important to realise that the veracity and completeness of data are often questionable.
This means that data will be collected from general practice registrations rather than population estimates, and this is likely to harm the quality, accuracy and completeness of data, according to a report published in the British Medical Journal.
Given the heterogeneous data in terms of patient numbers, inclusion requirements, headache diagnosis, statistical methods and completeness of data in published studies, the authors cannot unequivocally give a ranking of neurostimulation methods.
(4) centers will be notified of the inconsistencies or missing data as queries and asked to correct them; (5) the SCC will review detailed reports on screening, enrollment, follow-up, inconsistencies and completeness of data.
The accuracy and completeness of data collated from media and biographical sources cannot be quantified.
Participation of hospitals and completeness of data has been about 98% in recent years.
The high quality and completeness of data in this database have been documented.
Authors had full access to data and certify the accuracy and completeness of data analysis.
Studies using clinical data rely on the quality and completeness of data recorded by clinicians.
Participation of hospitals and completeness of data was about 98% in recent years [ 31].
