This article discusses the possible links between urbanisation, demographic variables and psychiatric admission rates. Inpatient psychiatric admission rates were determined for the 647 Dutch municipalities. Then urbanisation was deter mined using 'area address density', a unit of measurement developed by the Dutch Central Statistical Office. Five degrees of urbanisation are distinguished. Twenty- nine demographic variables which might have a theoretical link with admission rates were collated for all municipalities.
The results show that standardised total admission rates increase with urbanisation. The mean admission rate for the least urbanised municipalities is 2.02 per 1000 resident population, the rate for the most urbanised municipalities is 3.72 per 1000. It was then found that the prevalence of demographic risk factors increased with urbanicity. At the same time, it was found that almost all demographic variables correlated with admission rates. A multiple regression model - which accounts for 22% of variance - shows that income distribution, address density and mortality all contribute significantly to the variance in admission rates for the 647 Dutch municipalities.
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