Stability of clinically relevant depression symptoms in old-age across 11 cohorts: a multi-state study de la Torre-Luque A, de la Fuente J, Sanchez-Niubo A, et al. Stability of clinically relevant depression symptoms in old-age across 11 cohorts: a multi-state study.Aims: To study the temporal dynamics of depression symptom episodes in old-age and the related influence of risk factors. Methods: Data from 41 362 old adults (54.61% women; mean age = 75.30, SD = 6.20) from the Ageing Trajectories of Health -Longitudinal Opportunities and Synergies (ATHLOS) project were used. Depressive symptoms were followed over an 18-year period. A multi-state model, comprising three statuses (no depression, new clinically relevant episode of symptoms and episode persistence), was fitted. Multinomial regression was used to study the role of risk factors in status transition. Results: Almost 85% of participants showed no depression, but prevalence became lower over time (B = À0.25, P < 0.001). New episode point prevalence was over 5.30% with a significant probability of moving to persistence status (transition probability = 0.27). Episode persistence became evident in 9.86% of episode status transitions, with increasing rate over time (B = 0.54, P < 0.01). Loneliness was proven to be the strongest predictor of episode emergence (OR = 17.76) and persistence (OR = 5.93). Conclusions: The course of depression tends to become chronic and unremitting in old-age. This study may help to plan interventions to tackle symptom escalation and risk factor influence.
Significant outcomes• Most of older adults did not show any episode of clinically relevant symptoms of depression over time.• Almost one in four older individuals who showed a first episode of symptoms showed either episode persistence or episode recurrence later in life.• Loneliness was the most relevant factor in predicting symptom episode emergence and persistence.
Limitations• This is an epidemiological study focused on providing a coarse-grained picture of late-life depression symptom dynamics.• Despite our large sample from multiple countries across the globe, cultural issues were not controlled in this study.