Data sources and availability
| Data item | Target dataset | Country | |||
|---|---|---|---|---|---|
| Norway | Sweden | Denmark | The Netherlands | ||
| Incidence of invasive meningococcal disease | Annual incidence in children <5 years of age | NIPH Quarterly incidence <5 years, 1977–2009 | National reference Laboratory for Pathogenic Neisseria Annual incidence all ages, 1975–2009 (<5 years from 1997) | Department of Epidemiology, Statens Serum Institut Annual incidence <5 years, 1975–2007 | The Netherlands Reference Laboratory for Bacterial Meningitis Annual incidence <5 years, 1980–2009 |
| Prevalence of smoking* | Annual percentage of population who are daily smokers (ideally age-specific and gender-specific) | Norwegian Directorate for Health Annual age-specific data, 1975–2009 | National Institute of Public Health Annual age-specific and gender-specific data, 1980–2007 | OECD and ISS Annual gender-specific data, 1975–2008 | OECD and STIVORO Annual gender-specific data, 1975–2009 |
| Rate of ILI | Weekly consultation rate among sentinel centres for ILI during influenza season (weeks 1–20 and 40–52) | NIPH Weekly rate, 1975–2009 | Department of Epidemiology, Swedish Institute for Communicable Disease Control† Weekly rate, 1994–2009 | Statens Serum Institut Weekly rate, 1994–2009 | NIVEL Weekly rate, 1975–2009 |
| Overcrowding | Annual percentage of population living in a crowded household | Statistics Norway Data every 2–4 years, 1980–2007 | Statistics Sweden Data every 2 years, 1980–2007 | Statbank Denmark, Statistics Denmark Annual data, 1981–2009 | Central Bureau of Statistics Data every 3–5 years, 1981–2009 |
*Based on survey data on self-reported status of smoking.
†Based on laboratory-confirmed cases of ILI rather than consultation rate due to greater availability of data.
ISS, International Smoking Statistics32; ILI, influenza-like illness; NIPH, Norwegian Institute of Public Health, Oslo, Norway; NIVEL, The Netherlands Institute for Health Services Research, Utrecht, The Netherlands (www.nivel.nl); OECD, Organisation for Economic Co-operation and Development (www.oecd.org); STIVORO, Stichting Volksgezondheid en Roken, Den Haag, The Netherlands (http://www.stivoro.nl).