Research design and setting
Harmony in the Bush is a quasi-experimental study conducted in five rural nursing homes of Australia [South Australia (n = 2) and Queensland (n = 3)]. The nursing homes were purposely selected, and their managers were approached by the investigators and the former expressed interest to participate. To reflect on the diversity of the participating nursing homes, two were privately owned; one was a public funded (state-run center); and one was a not-for-profit facility. The fifth facility was a not-for- profit, partly funded by the government, Aboriginal Residential and Community Aged Care home.
The total number of residents living with dementia across the five participating aged care facilities in this this study is approximately 170-180. Allowing for 10% attrition, the investigators have estimated that 70-80 residents from this cohort can ensure a statistical power of 0.80. This estimation is based on a recent meta-analysis on effect of music interventions on agitation, which reports an overall effect size (Cohen’s d) of 0.61 calculated from 12 studies [24], and by adopting an alpha level of 0.05 and employing the algorithm [25]. This study adheres to the CONSORT guidelines.
Participants
Participants included eligible residents with dementia and staff from the participating nursing homes. Resident participants were recruited following receipt of informed consents to participate in the study by their legal guardians/power of attorney appointees. In each of the four nursing homes, 15-20 residents were selected as potential participants; but in one aged care home, which has a total of 15 residents, all residents with dementia were approached to participate. As a result, a total of 77 residents with dementia were recruited as participants. Inclusion criteria for the residents were: (a) diagnosis of dementia within the Diagnostic and Statistical Manual of Mental Health Disorders 5 (DSM-5) [26]; (b) a Standardized Mini Mental Status Examination (SMMSE) score of less than 24 [10]; (c) being ambulant; and (d) displaying dysfunctional behaviors. The residents who could not meet the inclusion criteria or had a medical condition that affects normative behavioral patterns, for example history of schizophrenia were excluded. Nursing home staff, registered nurses, enrolled nurses, and care staff, were approached through the facility managers to participate in this research, resulting in 87 staff participants after voluntary consent. The staff participated in the PLST based educational program, observed and recorded behaviours of the dementia participants and completed the Caregiver Stress Inventory (CSI).
Data collection procedure and intervention
The study intervention included:
Baseline assessments (One week)
Demographic information and baseline clinical data were collected for each of the residents. The demographic profile of the residents included age, gender, education level and occupation. During this week, each participant was assessed using the SMMSE or Kimberley Indigenous Cognitive Assessment (KICA-Cog); Pain Assessment in Advanced Dementia (PAINAD) scale; Cornell Scale for Depression in Dementia (CSDD) or Kimberley Indigenous Cognitive Assessment-Depression (KICA-Dep); Barthel Index of Activities of Daily Living (ADL); Apathy Evaluation Scale (AES); and Cohen-Mansfield Agitation Inventory (CMAI).
Education and development of person-centered care plan (Three weeks)
An experienced nursing educator/investigator(s) conducted the staff training workshops focusing on symptoms associated with Alzheimer’s disease and related disorders, the theory and delivery of the PLST, person-centered dementia care and the use of the measurement instruments listed in stage 1 – Baseline assessment. The Harmony in the Bush intervention entailed the introduction of person-centered care plan based on the following principles of the PLST theory:
- Introduce consistent individualized routines to compensate for cognitive decline;
- Organize small group activities to eliminate overwhelming stimuli;
- Allow residents to set their own sleep/wake cycle to prevent fatigue;
- Plan activities based on past experiences and practices considering present cognitive and functional abilities; and
- Eliminate misleading stimuli that trigger
The expected learning outcome after completion of the training was that staff who attended training should be able to identify:
- Understanding of person-centered approach to dementia care and PLST principles
- One each of the cognitive, affective and conative losses associated with Alzheimer’s disease and related disorders
- Five non-cognitive symptoms associated with Alzheimer’s disease and related disorders; and
- Four stressors that may potentiate non-cognitive
- Implement person-centered activities and music appropriate to each resident
All staff on duty were responsible for observing and recording the residents’ behavior on each shift. At least two staff in each facility were appointed as change champions by senior managers and trained in the process to ensure sustainability of the research outcomes after the project completion.
Person-centered music:
Individualized music forms the basis for the music intervention. A key aspect to the success of individualized music was to identify specific music preferences including exact song/composition titles and performers. We used The Assessment of Personal Music Preference Protocol in the Evidence-Based Guideline of Individualized Music for Persons with Dementia [19] to assist in the process of music selection for each of the participating residents. The individualized music songs were determined after discussion with the resident, the resident’s family member or next of kin/legal guardian, and the staff, and produced onto a multimedia MP3 player for listening, for not more than 30 minutes during rest periods and at an appropriate time requested by the residents. Applicable music activities were personalized and dependent on the participants’ preferences, and their appropriateness to the participants’ capability, participation, and response. Staff continuously gauged activity and stimulation levels and adjusted music
Intervention and post evaluation phase (Four weeks)
A person-centered care plan and personalized preferred music playlists were provided to participants based on the PLST principles [15] (Table 1; Figure 1).
Outcome measures
Baseline measures
- Standardized Mini Mental State Examination (SMMSE) [10], was used to assess orientation, memory, attention and calculation, language and visual construction in residents. Kimberley Indigenous Cognitive Assessment (KICA-Cog) developed by LoGiudice et al. [27], was administered for the Indigenous The cut-off levels were no cognitive impairment 24-30, mild cognitive impairment 19-23, moderate cognitive impairment 10-18 and severe cognitive impairment <10.
- The 10-item version of The Barthel Index of Activities of Daily Living (ADL) [28], was administered to assess ADL of the The total score ranges from 0-100.
- Pain Assessment in Advanced Dementia (PAINAD) scale, a frequently used simple five-item observational tool with a range of 0 to 10 [29], was administered to assess pain. The five indicators were breathing, vocalization, facial expression, body language and The total score ranges from 0-10 points. The scores are categories as mild pain 1-3; moderate pain 4-6; severe pain 7-10.
- Cornell Scale for Depression in Dementia (CSDD) [30], a tool used to specifically assess signs and symptoms of a major depression in people with a dementia, which includes items concerning physical well-being, sleep, appetite and other vegetative symptoms. The Kimberley Indigenous Cognitive Assessment – Depression (KICA-Dep) [31], a culturally acceptable screening tool for depression among older Indigenous Australians living in remote areas, was alternatively administered for the Indigenous
Baseline and post-intervention measures
- Cohen-Mansfield Agitation Inventory (CMAI)[32], is a validated tool that is being used in this study to assess level of agitation in residents with dementia. CMAI is found to be a valid and reliable tool for assessing agitation in individuals living in residential aged care facilities. CMAI was considered a useful tool that was easy to complete by the nursing staff and direct care workers [33]. Cohen-Mansfield, Marx, and Rosenthal (1989) classified the manifestations of agitation into the following three syndromes: (a) aggressive behavior (e.g., hitting, kicking, cursing); (b) physical nonaggressive behavior (i.e., restlessness, pacing); and (c) verbally agitated behaviors (e.g., complaining, negativism, repetitious sentences). CMAI was administered consecutively for five days pre and post intervention. A maximum of three assessments per day consistent with staff shifts (7.00-15.00, 15.15- 23.15, 23.30 – 7.15). An aggregate score that reflects the number of incidents per shift was calculated.
- Caregiver Stress Inventory (CSI) [34], which is a 43-item, self-reporting tool developed to determine individual staff caregiver stress to incidents (behaviors) that occur in residents with dementia, is used for assessing staff stress levels. Staff stress is measured as the response of individual staff members’ experience to incidents that occur in day-to-day care of persons with dementia. Reponses are self-rated on a seven-point Likert-type scale (1=not stressful, 7=extremely stressful) based on current perceptions of stress. The tool consists of four subscales representing staff stress from aggressive behavior, inappropriate behavior, resident safety, and resource deficiency. The tool is valid for use with paid carers and informal carers and has been recently used in Australian residential care facilities [35].
The paper reports the outcomes related to resident behavior and caregiver stress, while other elements of the Harmony in the Bush study such as sleep and psychotropic medication use will be reported separately. We recently reported on the determinants of person-centered care in rural nursing homes using follow-up qualitative data from the Harmony in the Bush study [36].
Data analyses
All analysis of pre- and post-test data was analyzed using SPSS IBM Version 23. Statistical tests were considered significant at p<0.05. Descriptive data was checked for outliers and assumptions for parametric analyses. Paired-t test was used to analyze the difference between baseline and 4 weeks follow-up of CMAI and CSI scores. Cross tabulation and chi-square tests were used to analyze the factors associated with caregiver stress. Repeated measures ANOVA were used to understand difference in baseline and follow-up assessments to understand the changes in behavioral and psychological symptoms in residents after adjustments for age and gender. Similarly, repeated measures ANOVA were used to analyze changes in staff stress in caregiving measured using CSI adjusted for age and gender.