Evaluating the Dyadic Benefits of Early-Phase Behavioral Interventions: An Exemplar Using Data From Couples Living With Parkinson's Disease.

BACKGROUND AND OBJECTIVES: There are a growing number of early-phase (i.e., Stage I, NIH Stage Model) interventions targeted at family care dyads navigating chronic health conditions in older adults. Currently, the benefits of these interventions are often evaluated for older adults and their family care partners separately, even when controlling for interdependence. Without understanding the benefits (and potential harms) for dyads as a whole, understanding of program impact is incomplete. Moreover, few health behavior interventions involving dyads include relational measures to ensure no unintended consequences for the dyad or account for within-dyad pretest risk level. RESEARCH DESIGN AND METHODS: We used secondary data from a quasi-experimental trial involving 39 couples in which 1 member of the dyad was living with Parkinson's disease as an exemplar demonstration of 3 proposed approaches: an above-zero approach, a pretest risk status approach, and an expanded pattern analysis matrix approach. RESULTS: Approaches provided evidence for dyadic benefits of the intervention compared to the wait-list comparison condition, but carried different assumptions that did not always categorize dyads similarly. DISCUSSION AND IMPLICATIONS: Implications of using each approach and selecting different benchmarks for defining success are discussed. The descriptive approaches proposed, provide a rationale for more intentional evaluation of small-sample, early-phase dyadic interventions.

The Effect of Tele-Savvy on Sleep Quality and Insomnia in Caregivers of Persons Living with Dementia.

Introduction: Sleep disturbance is prevalent in caregivers of persons living with dementia (PLwD). Tele-Savvy, a 7-week virtual psychoeducational intervention, enhances caregivers' competence and self-care, and reduces depression. While not explicitly designed to do so, Tele-Savvy can potentially improve caregivers' disturbed sleep. The present study aimed to examine the longitudinal effects of Tele-Savvy on caregivers' sleep quality and insomnia. Methods: This was a secondary data analysis of a 3-arm randomized control trial [Tele-Savvy (active treatment), Healthy Living (attention control), and usual care (waitlist control)]. Multilevel mixed modeling with intent-to-treat principles tested for group, time, and group-by-time effects. Effect sizes were estimated for all changes from baseline to the initial 6-month post-intervention point. Following completion of the 6-month post-randomization delay, we examined combined outcomes for Tele-Savvy. Results: Participants (n=137; mean age 64.7 years) were predominantly female (68.6%) and White (68.6%). We found no initial group-by-time effects for the Pittsburgh Sleep Quality Index (PSQI) and the Insomnia Severity Index (ISI). For the combined Tele-Savvy group, there was a statistically significant improvement in ISI scores across time (p=0.050). The combined Tele-Savvy effect size for PSQI was d=0.126 and ISI was d=0.310. Discussion: Tele-Savvy resulted in a significant long-term reduction in insomnia symptoms in this sample of caregivers of PLwD and demonstrated a positive trend for improvement in their sleep quality. Since sleep disturbance is so prevalent among caregivers of PLwD, the inclusion of sleep health education into psychoeducation caregiver interventions may yield even better outcomes for caregivers.

Clinical and Behavioral Research at the National Institute on Aging-50 Years of Innovation.

This Viewpoint discusses multicomplexity and dementia, 2 areas of clinical and behavioral research where the National Institute on Aging has made integral and distinctive contributions.