Nenette M. Jessup

Categorization and recognition performance of a memory-impaired group: Evidence for single-system models

Previous research has demonstrated dissociations between categorization and recognition performance in amnesic patients, supporting the idea that separate memory systems govern these tasks. However, previous research has also demonstrated that these dissociations are predicted by a single-system model that allows for reasonable parameter differences across groups. Generally, previous studies have employed categorization tasks that are less demanding than the recognition tasks. In this study, we distinguish between single-system and multiple-system accounts by testing memory-impaired individuals in a more demanding categorization task. These patients, just like previous amnesic participants, show a dissociation between categorization and recognition when tested in previously employed paradigms. However, they display a categorization deficit when tested in the more challenging categorization task. The results are interpreted as support for a single-system framework in which categorization and recognition depend on one representational system.

Task Difficulty and Life Changes Among Stroke Family Caregivers: Relationship to Depressive Symptoms

OBJECTIVES To investigate differences in stroke caregiver task difficulty and life changes based on level of caregiver depressive symptoms, and to estimate probabilities among task difficulty and life change items. DESIGN Descriptive analysis of baseline data from an ongoing stroke caregiver intervention trial. SETTING Hospitals and rehabilitation facilities. PARTICIPANTS Caregivers (N=242; 78.6% women; 47.7% spouses; 71.8% white; mean age, 54.2±12.1y) caring for stroke survivors within 8 weeks of discharge to home. INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES Baseline measures for task difficulty (Oberst Caregiving Burden Scale) and life changes (Bakas Caregiving Outcomes Scale) were compared based on level of depressive symptoms (Patient Health Questionnaire-9 [PHQ-9] scores <5 means no depressive symptoms; n=126; PHQ-9 scores ≥5 means mild to severe depressive symptoms, n=116). Mean scores were analyzed using general linear modeling, with item analyses using logistic regression and the Benjamini-Hochberg method to control type I error inflation. RESULTS Caregivers with mild to severe depressive symptoms have greater difficulty with tasks and worse life changes than those with no depressive symptoms (P<.001). Odds ratios were highest for the task of arranging care while away and for negative life changes (eg, addressing self-esteem, coping with stress, physical health). CONCLUSIONS Findings underscore the importance of depressive symptom screening for stroke caregivers during or shortly after discharge. Assisting caregivers with depressive symptoms to arrange for respite care and addressing negative physical and psychological changes may be priority areas for future interventions.

Are there Gender, Racial, or Relationship Differences in Caregiver Task Difficulty, Depressive Symptoms, and Life Changes among Stroke Family Caregivers?

Abstract Objective: To examine differences in caregiver perceptions of task difficulty, depressive symptoms and life changes based on caregiver characteristics of gender, race and type of relationship to the person with stroke. Methods: A sample of 243 stroke caregivers (females n = 191; males n = 52; non-African Americans n = 184; African Americans n = 59; non-spouses n = 127; spouses n = 116) were interviewed by telephone within 8 weeks of the survivor’s discharge to home. Measures included the Oberst Caregiving Burden Scale (OCBS) for task difficulty, Patient Health Questionnaire (PHQ-9) for depressive symptoms and Bakas Caregiving Outcomes Scale (BCOS) for life changes. Three general linear models computed differences in OCBS, PHQ9 and OCBS scores. Results: Significant differences were found on the OCBS for females (p < 0.001) and African American spouses (p < 0.048); on the PHQ9 for females (p < 0.001), non-African Americans (p = 0.047), spouses (p = 0.003) and African-American spouses (p = 0.010); and on the BCOS for females (p = 0.008) and non-African Americans (p = 0.033). Conclusions: Findings suggest that female and non-African American stroke caregivers are relatively more likely to experience task difficulty, depressive symptoms and negative life changes as a result of providing care. African American spouses were also at risk. Tailoring interventions based on caregivers’ characteristics may improve outcomes. Trial registration: ClinicalTrials.gov identifier: NCT01275495.

Telephone Assessment and Skill-Building Kit for Stroke Caregivers: A Randomized Controlled Clinical Trial

Background and Purpose— There are few evidence-based programs for stroke family caregivers postdischarge. The purpose of this study was to evaluate efficacy of the Telephone Assessment and Skill-Building Kit (TASK II), a nurse-led intervention enabling caregivers to build skills based on assessment of their own needs. Methods— A total of 254 stroke caregivers (primarily female TASK II/information, support, and referral 78.0%/78.6%; white 70.7%/72.1%; about half spouses 48.4%/46.6%) were randomized to the TASK II intervention (n=123) or to an information, support, and referral group (n=131). Both groups received 8 weekly telephone sessions, with a booster at 12 weeks. General linear models with repeated measures tested efficacy, controlling for patient hospital days and call minutes. Prespecified 8-week primary outcomes were depressive symptoms (with Patient Health Questionnaire Depressive Symptom Scale PHQ-9 ≥5), life changes, and unhealthy days. Results— Among caregivers with baseline PHQ-9 ≥5, those randomized to the TASK II intervention had a greater reduction in depressive symptoms from baseline to 8, 24, and 52 weeks and greater improvement in life changes from baseline to 12 weeks compared with the information, support, and referral group (P<0.05); but not found for the total sample. Although not sustained at 12, 24, or 52 weeks, caregivers randomized to the TASK II intervention had a relatively greater reduction in unhealthy days from baseline to 8 weeks (P<0.05). Conclusions— The TASK II intervention reduced depressive symptoms and improved life changes for caregivers with mild to severe depressive symptoms. The TASK II intervention reduced unhealthy days for the total sample, although not sustained over the long term. Clinical Trial Registration— URL: https://www.clinicaltrials.gov. Unique identifier: NCT01275495.

Tracking patterns of needs during a telephone follow-up programme for family caregivers of persons with stroke

Abstract Purpose: Programmes that address stroke family caregiver needs and skill-building are recommended based on the literature and patient care guidelines for stroke rehabilitation. The purpose of this study was to explore patterns of perceived needs and skill-building during a stroke caregiver intervention programme. Method: Descriptive statistics were used to analyse data from 123 stroke caregivers enrolled in the intervention group of a randomised controlled clinical trial. Caregivers received eight weekly telephone sessions, with a booster session a month later. At each session, the Caregiver Needs and Concerns Checklist (CNCC) was used to identify and prioritise current needs that were then addressed through skill-building strategies. Results: Perceived needs changed over time. Information about stroke was the highest priority need during Session 1. Managing survivor emotions and behaviours was the highest priority for Sessions 2 through 4. Caregivers generally waited until Sessions 5 through 9 to address their own emotional and physical health needs. Physical and instrumental care needs were relatively low but stable across all nine sessions. Skill-building was consistently high, though it peaked during Sessions 2 and 3. Conclusions: Tracking patterns of needs and skill-building suggest appropriate timing for targeting different types of family caregiver support during stroke rehabilitation. Implications for Rehabilitation Family caregivers of stroke survivors play an essential role in the rehabilitation process of the stroke survivor. Identifying and addressing the priority needs and concerns of stroke caregivers during the early discharge period enables caregivers to provide sustained support for the stroke survivor. Rehabilitation professionals are in a key position to address evolving caregiver needs and concerns as they transition to home settings with follow-up care.