This is primarily limited to Internet websites created by government departments and installers of photovoltaic panels and occasional printed postal information provided by utilities and retailers.
Traditionally, physicians used paper "report cards" provided by the Inspectorate of Healthcare as a postal notification form, but these are little used nowadays.
The quality of postal addresses provided by Bisnode Match It and ScandInfo was good, since less than 300 letters were returned (3% of the gross sample).
For the follow-up measurements in patients and relatives (T1 = 3 months; T2 = 6 months; T3 = 9 months; T4 = 12 months after discharge), postal questionnaires provided by the leading study centre will be used.
We telephoned non-responding nurseries to confirm that the nursery was still in operation, to verify the postal address provided by Ofsted, and to assess interest in completing the survey.
In three northern and central Swiss cantons (Zurich, Lucerne, and Zug), all GPs approved by the Swiss Medical Doctors Federation (Foederatio Medicorum Helveticorum, FMH) who were either running a medical office independently or employed in a medical office were invited to participate by information leaflet sent to postal addresses provided by the FMH.
Urbanization level of the participant's residential area, and mean real estate prices in the participant's residential area, were determined by linking the participants postal codes to the 1992 postal code information provided by Statistics Netherlands (Centraal Bureau voor de Statistiek 2001).
Socioeconomic status data were derived from postal code information provided by cohort patients at baseline.
To estimate the supply of available donor organs, each hospital performing transplants was assigned to one of the 11 U.S. regions created by the United Network for Organ Sharing (UNOS), based on the hospital's two-letter state postal code as provided by the NIS.
Status scores per four-digit postal code were provided by the Netherlands Institute for Social Research, www.scp.nl based on (1) mean income, (2) percentage of households with a low income, (3) percentage of households with, on average, a low education, and (4) unemployment rate in 2010.
