Survey among municipalities in the Netherlands in order to obtain information about driving back non-use of special income support (Bijzondere Bijstand) for chronic patients, handicapped - and elderly persons. Policy driving back non-use of special income support (Bijzondere Bijstand) / demarcation target group / removal of barriers via target group policy / removal of barriers via collective additional medical insurance / used instruments to optimize use of special income support (Bijzondere Bijstand) / scope of target group and accessibility / administrative variables In order to prevent that individual municipalties should become identifiable CEBEON removed the CBS code of municipality. Use of non-anominyzed data is possible upon special request as long as promises towards municipalities are kept.