Associations between illness cognitions and health-related quality of life in the first year after diagnosis of amyotrophic lateral sclerosis

Abstract

Objective: To describe illness cognitions among patients with amyotrophic lateral sclerosis (ALS), to study crosssectional associations between illness cognitions and health-related quality of life (HRQoL) and to study the predictive value of illness cognitions measured shortly after the diagnosis for HRQoL at follow-up. Methods: Prospective longitudinal design. We administered Self-report questionnaires at study onset (n = 72) and follow-up (n = 48). Median follow-up period was 10.0 months. At baseline median ALS Functional Rating Scale-Revised was 43, median time since onset of symptoms was 13.6 months, 79% of patients presented with spinal onset. Illness cognitions Helplessness, Acceptance and Disease Benefits were measured with the Illness Cognitions Questionnaire (ICQ) and HRQoL with the ALS Assessment Questionnaire (ALSAQ-40). Correlational and regression analyses were used. Results: Patients experienced more Helplessness at follow-up. We found no significant changes in Acceptance or Disease Benefits at follow-up. In cross-sectional analyses, Helplessness was independently related to worse HRQoL at baseline (beta = 0.44; p =.001) and Acceptance and Disease Benefits were independently related to worse HRQoL at follow-up (beta = -0.17, p =.045) and (beta = -0.186, p =.03 respectively). Longitudinal analyses showed that, adjusted for disease severity at baseline, Helplessness at baseline was a predictor of worse HRQoL at follow-up (beta = 0.43; p =.006). None of the illness cognitions were a significant predictor of HRQoL with adjustment for baseline HRQoL. Conclusion: Helplessness was independently associated with HRQoL in the cross-sectional and longitudinal analyses. These results can help us identify patients shortly after diagnosis who might benefit from psychological interventions