For discharged personnel and reservists we used telephone databases to trace home telephone numbers then phone the participants (578 subjects); computerised electoral registers to trace and/or verify addresses prior to mailing (771 subjects); and registered mail for delivery (304 subjects).
This computerised test requires the subject to sort a number of cards displaying either one, two, three or four; red, green, yellow or blue; triangles, stars, crosses or circles according to either number, colour, or shape of the symbols on the card.
"We fully expected back then we would have computerised doctors and computerised teachers," he added.
4 5 However, this study reconfirmed these associations in a large number of well-characterised subjects using automated computerised ultrasonography with an edge-tracking system, which enables identification of the true peak value of FMD.
The use of insurance data has a number of advantages, including: 1) coverage of nearly the entire population, due to publicly funded health insurance arrangements in these two countries; 2) these data are not subject to recall bias; and 3) computerised databases already exist.
The five participating practices were fully computerised and the completeness of their coding of consultations has been subject to regular quality reviews.
In addition, subjects' contrast sensitivity (CS) was tested with a computerised CS test, and the effect of memorisation was determined using a traditional chart.
Computerised weighting [ 8] of the whole sample of 1 609 subjects allowed for compensation of under-representation of the additional sample in the whole sample (adjustment to the proportion of all subjects living in the 22 departments involved in organised CRC screening programs).
Computerised randomisation will define the sequence of the study groups.
Subjects' health records from routine physical check-ups have been computerised since 2007 at Beijing Tongren and Xiaotangshan Hospitals.
