Dutch Public Health Status and Forecast 2006

Table A8.1 gives the annual incidences and annual prevalences for the diseases selected for the PHSF. The data originate from GPs’ records and other care data registration schemes. Use has been made of data for 2003 or an average for several years. Where no recent data were available, older figures have been used (see notes). The figures have been standardized for the population as it was in 2003.

The incidence data for acute illnesses relate to numbers of cases; therefore a given individual may feature several times. The incidence data for sub-acute and chronic disorders relate to numbers of individuals. Prevalence and incidence figures in excess of 2,500 have been rounded off to the nearest hundred; figures smaller than 2,500 to the nearest ten. For more detailed information concerning the tabulated data, please refer to the National Compass on Public Health (www.nationaalkompas.nl).

The statistics in the table are not directly comparable with those presented in the PHSF 2002. In a number of cases, different sources have been used, or different decisions made regarding the variable to be reported. For the cancers, for example, the ten-year prevalences are reported, whereas in the PHSF 2002, the lifetime prevalences were reported. With regard to trends over time, the reader is referred to the information on the individual illnesses in the Compass, or to subsection 2.1, where the most important incidence, prevalence and mortality trends are summarized. In contrast to the PHSF 2002, we have not on this occasion presented a separate table of epidemiological study data. This is partly because no such data are available for most of the PHSF diseases , and partly because those epidemiological study data that are available for individual illness are mostly somewhat dated.

Table A8.1: Annual incidence, annual prevalence (both on the basis of care records), mortality and lost life-years, standardized for the population of the Netherlands in 2003 (absolute numbers); sources as specified in the table

Used data sources:

• Tuberculosis: KNCV National Tuberculosis Register
• Meningitis: AMC/RIVM Dutch Reference Laboratory for Bacterial Meningitis
• Septicaemia, abdominal aortic aneurysms and hip fractures: Prismant LMR
• Bacterial STDs (gonorrhoea, syphilis and infection with Chlamydia trachomatis): RIVM STD Monitoring Station
• Viral STDs (herpes genitalis, hepatitis B and condylomata acuminata): RIVM STD Monitoring Station, NIVEL National General Practice Information Network (LINH) for 2004, IGZ/RIVM Osiris
• AIDS: HIV Monitoring Foundation
• Neoplasms: incidence data from the Association of Comprehensive Cancer Centres (VIKC) Dutch Cancer Register (NKR) ten-year prevalence at January 2002 (Amsterdam Integrated Cancer Centre and Southern Integrated Cancer Centre)
• Dependency on alcohol or drugs: IVZ Foundation LADIS
• SCP, point prevalence (SCP analysis of data from article: Maas JMAG, Serail S, Janssen AJM. Frequency study of mental disability 1986. Tilburg: IVA, 1988)
• Influenza: NIVEL Dutch CMR Survey Stations
• Congenital abnormalities: Foundation for Perinatal Data Registration in the Netherlands LVR/LNR
• Premature births: Foundation for Perinatal Data Registration in the Netherlands
• Accidental injuries: number of medical treatment recipients from SCV OBiN; mortality: Statistics Netherlands unnatural death statistics
• Suicide, attempted suicide and self-mutilation, and violence: number of treatment cases in A&E departments, from SCV LIS
• Other disorders: GP records. Sources used were NIVEL National General Practice Information Network (LINH) for 2004, St. Radboud UMC Nijmegen CMR for 2000-2004, Transition Project Foundation project data for 2000-2004, the UM RNH for 2001-2004 and the LUMC RUNH-LEO for 2001-2004. Available data sources were investigated for each disease. Where use was made of two or more data sources, the average incidence or prevalence was calculated.
• For schizophrenia: prevalence as determined from GP records plus number of patients admitted to mental hospital. The latter figure was estimated by dividing the number of mental hospital care-days in 2003 where schizophrenia was the primary diagnosis by 365 (source ZORGIS).
• For diseases associated with prolonged nursing home care for a relatively large number of patients, the number of such patients was estimated and added to the number recorded in GP records. On the basis of 2003 data from the National Nursing Home Care Register (LZV) and from the Central Record Office for Exceptional Medical Expenses (CAK), an estimate was made of the number of days that people suffering dementia, Parkinson’s disease, multiple sclerosis (MS) or stroke spent in nursing homes. This was done by applying the age and gender-specific diagnosis distributions from the LZV to the CAK data, that did not include any diagnosis information. The number of people involved was estimated by dividing the total number of care-days in 2003 by 365.
• Mortality rates and lost life-years: Statistics Netherlands Mortality Statistics, analysed by the RIVM.

Notes:

1. Transient diseases and acute injuries for which no prevalence figure is given.
2. No (definite) data available.
3. No care record data available. On the basis of other sources, the six-month prevalence of a number of mental problems in children has been estimated. ADHD (young people aged thirteen to seventeen): 12,800; autistic disorders (children and young people up to the age of twenty): 5,000; behavioural disorders (young people aged thirteen to seventeen): 55,000 young people with antisocial behavioural disorder and 6,900 young people with oppositional-defiant behavioural disorder. For more information and sources, see the National Compass on Public Health (www. nationaalkompas.nl).
4. No definite data available; also included in other illness groups.
5. Mortality rate and number of lost life-years are very low or zero.
6. Not relevant.
7. Mortality rate unreliable.

1. Of the incident cases in 2003 4.3% were recidivist.
2. Incidence relates only to the bacterial form and has been corrected for underreporting.
3. Incidence reflects the number of hospital admissions where one of the specified diseases is the primary discharge diagnosis.
4. Annual prevalence in 2003 is the number of cases reported between the start of the AIDS epidemic and the end of 2003, minus the number of fatalities up to the end of 2002.
5. The viral STDs included are herpes genitalis, hepatitis B and condylomata acuminate; the bacterial STDs are infection with Chlamydia trachomatis, syphilis and gonorrhoea. Where bacterial STDs are concerned, cases recorded in the LINH have not been counted.
6. The prevalence estimated on the basis of the IKA and IKZ data is the ten-year prevalence and reflects the number of people alive on 1 January 2002, in whom the illness was diagnosed in the preceding ten years. In other words, people who have been cured and are no longer under medical supervision are included.
7. The prevalence relates to the number of clients in (outpatient) addiction care in 2003. The incidence is the number of new clients, i.e. people who were not previously registered as addicts. The data on drug dependency relate to opiates, cocaine, cannabis, amphetamine and Ecstasy. Mortality due to alcohol dependency relates to the ICD categories liver disease and -cirrhosis, heart disease, gastric inflammation and pancreatic inflammation, all resulting from excessive alcohol consumption, as well as mental disorders and behavioural disorders resulting from excessive alcohol consumption.
8. Including secondary Parkinsonism.
9. Prevalence relates to people receiving treatment for angina pectoris or (the consequences of) an acute myocardial infarction.
10. Prevalence is lifetime prevalence, i.e. the number of people that have ever suffered a stroke.
11. Incidence relates to the number of hospital admissions and thus primarily reflects the number of aneurysms requiring surgery. The actual number of newly diagnosed cases of aneurysm is not known.
12. Relates to the average annual incidence in the period of week 27 of 2002 to week 26 of 2004 (two seasons).
13. Relates to colitis ulcerosa and Crohn’s disease.
14. Relates to irritation eczema and contact-allergic eczema.
15. Relates only to arthrosis of the limbs (neck and back arthritis are included under neck and back problems).
16. Incidence relates to prevalence at birth in living neonates (of both sexes). The figures quoted relate to 2002 and have not been standardized for 2003.
17. Premature birth: birth in the period between the twenty-fourth and thirty-sixth week of pregnancy. The figures quoted relate to 2002 and have not been standardized for 2003.
18. Average annual incidence for the period 2000 to 2003.
19. Average annual incidence for the period 1999 to 2003.