Key finding
Older-adult cohort: negative relationship quality OR 1.20 over 5 years; criticism OR 1.44
Evidence & causal status
Limited
Association
Caveats & limitations
Reliability / bias notes: Small event count; self-report; reverse causation; limited generalisability
This describes a population-level association from published research. It is not a prediction about any one individual, and association is not the same as causation unless stated otherwise above.