[The sick leave notification II system. From the project Evaluation of follow-up of long-term sick leave patients].

In 1988 the National Insurance Administration in Norway introduced a compulsory sickness certificate to be issued by the doctor after eight weeks of incapacity of work (sickness certificate II). The form contains 25 specified items to be filled in by the doctor. We registered and analysed the sickness certificates received by the local National Insurance offices in five municipalities during the last three months of 1988 (n = 735). The patients included a slight majority of males. 1/3 of the patients were younger than 30 years old and 2/3 younger than 50. 1/4 of the items had not been filled in by the doctors. The most frequent diagnostic groups were musculo-skeletal/connective tissue diseases (46.4%), mental disorders (11.2%), and complications related to pregnancy and birth (9.6%). Sickness certificate II included a five-level prognosis scheme. 68.3% of the patients were allocated to prognosis A, i.e. full recovery as a result of medical treatment only. Few doctors noted that cooperation with other health and social welfare personnel was desirable. The level of unemployment was reported as being higher in patients who were certified sick for greater than or equal to 8 weeks than in the general population of the countries included in the study. The extra costs of introducing sickness certificate II are estimated to equal one day's sickness allowance for each of the 735 patients.