For microvascular outcomes, no time-to-event data were available, but presence or absence of each complication was assessed during the 1997 1999 follow-up visit examinations.
If volunteers suffered from acute infections such as a cold or influenza up to 3 days before the clinical visit, examinations were postponed or the respective blood sample was excluded from analyses.
At the baseline visit, examinations performed at screening were repeated except for refraction; ocular symptoms and adverse events were assessed; and iris/en face photographs were taken (2 sets for each eye; one retained at the study center and one sent to a central reading center).
During every visit examination, assessment of clinical events and 12-lead electrocardiography are performed.
This model considered only direct medical costs including those associated with drug acquisition, general practitioner (GP) visits and specialist visits, examinations, and hospitalizations.
Insurance policies cover hospitalisation costs and all out-patient care: drugs, visits, examinations, etc... Average patient co-payment in 2001 was 11.1% of total expenditure [ 31].
Figure 1 shows the study scheme including all visits, examinations and other procedures as well as the data that is taken from the pregnant women/mothers and their newborns.
Site visits, examinations using standardised patients, and case recall interviews have been found to be too expensive or impossible to implement with the huge number of doctors in the USA.
Within small working groups moderated by members of our department, plans for monitoring visits (examinations, referral frequency), relevant drugs (including dosage), and documentation forms were developed and brought to a consensus with all participants.
With respect to outcomes, the following events were recorded: lung or heart lung transplantation, atrial septostomy, PEA, hospitalisation, ambulatory/outpatient centre visits, examinations and procedures, and other health care services.
However, they had a higher rate of fillings in the past year than the comparison group but were not different on number of visits, examinations, scale and clean services, and extractions.
