Objective. Physically demanding occupations have been associated with becom
ing a disability pensioner with rheumatoid arthritis (DPRA), but not with t
he disease of RA. The association with becoming DPRA probably reflects that
patients with RA have difficulties in maintaining employment in a physical
ly demanding occupation. However, the attitudes of the employers concerning
employment of persons with RA might vary. For example, the patient's age m
ay influence the strength of the association between a physically demanding
occupation and becoming DPRA. We assessed whether the association between
the predictors and becoming DPRA was stronger for the youngest or the oldes
t age group.
Methods. The study was prospective with data on persons in Norway 30-56 yea
rs old either in the census of 1970 or 1980. All new cases of DPRA during t
he ? followup periods 1971-80 and 1981-90 were identified and analyzed by l
ogistic regression.
Results. For women the predictors employment, low level of education, and p
eriod (1981-90 compared to 1971-80) were more strongly associated with beco
ming DPRA for the youngest compared to the oldest persons, while manual wor
k and parr time work were not predictors of becoming DPRA. For men, all the
predictors in the study were more strongly associated with becoming DPRA f
or the youngest compared to the oldest age group.
Conclusion. The higher risk of becoming DPRA was associated with must predi
ctors for persons aged 30-39 years than the group aged 50-56 years. Our res
ults appear to indicate that the consequences of having RA in the labor mar
ket are greater for the youngest age group.