Multimorbidity and loneliness. Longitudinal analysis based on the GSOEP.

Area of Science:

• Gerontology
• Public Health
• Epidemiology

Background:

• Multimorbidity and loneliness are significant public health concerns, particularly among aging populations.
• Understanding the longitudinal relationship between these conditions is crucial for developing targeted interventions.

Purpose of the Study:

• To investigate the longitudinal association between the onset and resolution of multimorbidity and loneliness.
• To examine these associations across different age groups in the German adult population.

Main Methods:

• Utilized longitudinal data from the German Socio-Economic Panel (2013-2017) with 44,385 observations.
• Employed asymmetric linear fixed effects regressions, stratifying analyses by age groups (18-44, 45-64, 65+).
• Quantified loneliness using the UCLA-3 scale and defined multimorbidity as two or more coexisting conditions from a list of 13 diseases.

Main Results:

• The onset of multimorbidity was significantly associated with increased loneliness in the total sample (β=0.07, p<0.001) and in individuals aged 65 and older (β=0.13, p<0.001).
• No significant association between the onset of multimorbidity and loneliness was observed in younger age groups (18-44 and 45-64).
• The resolution of multimorbidity showed no significant association with changes in loneliness across any age group.

Conclusions:

• The onset of multimorbidity is a significant predictor of increased loneliness, particularly in older adults.
• Interventions aimed at preventing or delaying the onset of multimorbidity may serve as a strategy to mitigate loneliness in later life.
• Further research is warranted to explore the mechanisms underlying this association and to develop effective prevention strategies.