Consistency of data extraction was verified.
There is also a manual of procedures for data extraction and entry used at all sites.
All associate researchers use a manual of procedures for data extraction.
Data extraction and data synthesis The procedures for data extraction and assessment of risk of bias were always conducted by one person and checked by another.
Procedures for data extraction, storage and reporting of analyses were compliant with data protection legislation (P Dron, RVC Data protection officer; Personal communication).
16 The International Classification of Diseases (ICD) procedure codes for data extraction are listed in online supplementary appendix 1.
The company is not offering any sort of data-extraction tool, however.
Some of the procedures performed during data extraction (e.g. obtaining values from figures, converting SEM to SD, converting to SI units were considered not to cause bias, but they could potentially cause some inaccuracy in the data used for the analyses.
The block diagram of this data extraction procedure is shown in Figure 6. Figure 6 Data extraction procedure of the proposed acoustic data transmission system with multiple microphones.
