Contextual factors are a central element of the ICF and important factors for therapy planning in psychosomatic rehabilitation. At the same time, little is known about the relationship between contextual factors and patient self-regulation, an important goal of rehabilitation.The aim of this study is therefore to investigate the relationship between contextual factors and illness belies. Illness beliefs are a core element of self-regulation in psychosomatic rehabilitation and part of the common sense model of self-regulation.

Between April 2019 and January 2020, a cross-sectional questionnaire study was conducted in a psychosomatic rehabilitation clinic, in which registered rehabilitation patients were questioned about their illness beliefs using the Illness Perception Questionnaire (IPQ-R). Contextual factors were divided into clinically modifiable and non-clinically modifiable and included gender, age, duration of illness, subjective social status, main diagnosis (dichotomised: F3/F4), occupational stress, depressive stress as well as activity and participation (operationalised by the Health-49). Multiple regressions were used for the analysis, in which the scales of the IPQ-R served as dependent variables.

N=264 rehabilitants took part in the survey, 50% of them were female. The average age was 50 years. With regard to the non-clinically modifiable contextual factors, it was shown that a younger age was associated with higher control assumptions, but that younger rehabilitation patients simultaneously perceived more symptoms due to their illness (identity). A longer duration of illness showed a connection with the chronic timeline assumptions. A lower social status showed correlations with lower control assumptions and more assumptions about the cyclical timeline. Regarding clinically modifiable contextual factors, an F3 diagnosis was associated with more expected consequence, but also with a higher perceived personal control than an F4 diagnosis. A higher occupational burden was associated with the assumption of a more chronic course of the disease. Reduced activity and participation were associated with more expected consequences and more perceived symptoms (identity). Depressive stress showed associations with six out of eight domains of illness beliefs.

The study supports the relevance of contextual factors, which in majority can be discussed as person-related factors, for patient self-regulation in psychosomatic rehabilitation. Interventions to increase self-regulation, e. g. by taking illness beliefs into account, have already achieved promising results, also in the context of rehabilitation. The patient-oriented approach of these interventions could be further strengthened by a stronger inclusion of contextual factors.