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Evaluating the Efficacy of a Web-Based Program (Diapason) for Informal Caregivers of Patients With Alzheimer’s Disease: Protocol for a Randomized Clinical Trial
Victoria Cristancho-Lacroix1,2, MApsych, MSc; Hélène Kerhervé1, PhD (Psych); Jocelyne de Rotrou1, PhD (Psych); Alexandra Rouquette3, MD; Grégory Legouverneur1,4, MApsych; Anne-Sophie Rigaud1,4, MD, PhD
1Broca Hospital-APHP, Department of Gerontology, Paris, France
2Research team EA 4468, Institut de Psychologie, Université Paris Descartes, Paris, France
3Biostatistic and Epidemiology Department, Hotel-Dieu Hospital, Paris-Descartes University, Paris, France
4Research team EA 4468, University Paris Descartes, Paris, France
Department of Gerontology
54-56 rue Pascal
Phone: 33 33144083351
Fax: 33 33144083510
Background: Informal caregivers (CGs) of patients with Alzheimer’s disease are at risk of suffering from psychological and physical weakening. Several psychoeducational interventions have been designed to prevent stress and burden of caregivers. In France, despite health authorities’ recommendations, to our knowledge there is no rigorously assessed Web-based psychoeducational program to date.
Objective: The objective of our study was to assess the efficacy of a French Web-based psychoeducational program (called Diapason) with an unblinded randomized clinical trial.
Methods: In this protocol, 80 informal caregivers of patients followed at Broca Hospital are recruited offline and randomized in the experimental condition (EC) or the control condition (CC). The volunteers in EC have to visit a closed online user group at least once a week and validate one new session of this fully automated Web program, during 12 weeks. Each week a new thematic is added to the website. The participants in the CC receive usual care, and have access to the Diapason program after their participation (6 months). Face-to-face evaluations for both groups are planned every 3 months (M0–M3 and M6). The main objective of this program is to provide CGs with information on the disease process, how to prevent psychological strain (using anticipation and relaxation techniques), and offering a virtual space (forum) to discuss with other caregivers. The primary outcome of this study is the self-perceived stress, while self-efficacy, burden, depression, and self-perceived health status are defined as secondary outcomes. Other variables that might have an impact on the program efficacy are collected.
Results: This protocol was accepted for funding. The enrollment began in October 2011, and participants currently recruited will finish their evaluations in January 2014. The results are expected for June 2014.
Conclusions: Findings might provide empirical evidence on: (1) the feasibility of an Internet-based program in the French context, (2) the effectiveness of a Web-based program for informal caregivers, and (3) the identification of caregivers who will benefit from this type of intervention.
Trial Registration: Clinicaltrials.gov NCT01430286; http://clinicaltrials.gov/ct2/show/NCT01430286 (Archived by WebCite at http://www.webcitation/6KxHaRspL).
(JMIR Res Protoc 2013;2(2):e55)
family caregivers; Alzheimer's disease; Internet; program effectiveness; psychoeducational program; psychological stress; randomized clinical trials
Informal caregivers (CGs) of patients with dementia have an important role in the prevention of patients’ institutionalization. Unfortunately, CGs are prone to high levels of stress and are at higher risk of weakening mental and physical health, lower life expectancy, and lesser economic security than people who are not confronted with such stressful situations . In order to prevent these consequences various programs have been developed for them, which have shown a positive effect on caregivers’ burden, depression, or stress [2-4]. Furthermore, several studies have demonstrated the protective role of resilience and coping factors for this population .
The new recommendations following French Alzheimer's Plan 2013  underlined the use of Web-based interventions in order to inform and support family caregivers.
There are many reasons for caregivers to use or to prefer a distance intervention instead of a face-to-face one. In fact, CGs spend a lot of their time in care activities, supporting directly (eg, cooking, housekeeping, supervising their loved ones) or indirectly (eg, doing administrative, financial, or logistic management) their relatives. Furthermore, the time requested for caring increases with the disease progression, and finding time for their own respite can be quite difficult. In fact, several CGs fulfill many roles, such as being parent, grandparent, worker, and friend. Finally, some of them live in remote regions and other CGs do not feel at ease with face-to-face interventions or prefer a flexible time/content intervention .
Distance interventions, based on information and communications technology (ICT), appeared in the earlier part of the 21st century in order to propose an alternative intervention to caregivers unable to access health centers delivering face-to-face programs. Distant programs have shown a positive effect on self-perceived stress, burden, depression symptoms, and social support of caregivers [7-14].
In the case of caregivers of patients with dementia, several websites exist in France, but these programs have not been, to our knowledge, subjected to a randomized clinical trial.
It is therefore relevant to evaluate the impact of ICT-based or distance-based interventions on the mental and physical health status of caregivers in a controlled experimental study with a French population. It could represent a base for the health care policies and facilitate financial support for these initiatives.
Diapason  is a fully automated Web-based version of a psychoeducational program, inspired by the group intervention sessions from the geriatric service of Broca Hospital called Aide dans la Maladie d’Alzheimer (AIDMA) program, or in English: Help in Alzheimer’s disease. AIDMA was assessed in a previous study including 167 dyads “patient-caregiver” and showed a significant improvement in disease understanding and in the ability to cope with care-recipients’ disease [16,17]. The difficulty to schedule and attend all sessions (once per week during 12 weeks) for some of the caregivers was the main reason to adapt the program into an Internet-delivered version. Thus, we have adapted and designed a Web-based program in order to improve the accessibility for caregivers.
The purpose of this article is to present the study protocol of a randomized clinical trial designed to evaluate the efficacy of Diapason, a Web-based psychoeducational program for caregivers of patients with Alzheimer’s disease (AD). Our hypothesis is that the Diapason program reduces the caregiver’s perceived stress and burden and enhances his/her self-efficacy and self-perceived health. This study protocol has received approval from the French competent authorities (ie, Agence Française de Sécurité Sanitaire des Produits de Santé, Centre de Protection de Personnes–CPP, Commission nationale de l'informatique et des libertés).
This is a pragmatic and unblinded randomized controlled trial (NCT01430286) of a Web-based psychoeducational program for the CGs of patients diagnosed with AD. Two parallel groups are compared. The experimental group receives immediate access to a Web-based program, and the comparison group is given the information usually delivered to the patient by the geriatrician during follow-up consultations. In addition to the baseline visit, two follow-up visits at the hospital are planned at 3 and 6 months.
Eligible participants are informal French-speaking caregivers (family or not, providing care to the patient at least 4 hours per week) of an AD patient diagnosed at the Memory Center of the Broca Hospital, Paris, France, and who meets the criteria in the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition  or National Institute of Neurological and Communicative Disorders and Stroke and the Alzheimer’s disease and Related Disorders Association criteria . To be included in the trial, caregivers have to be 18 years or older or to be able to provide an informed consent, to score 12 or over on the Perceived Stress Scale of 14 items (PSS-14)  during screening, and to have a computer with an Internet access at home with an email address regularly used. If participants (CGs) are on psychopharmacological treatment or therapy, they are required to keep the same treatment at least two months before inclusion in the protocol.
Exclusion criteria include being a professional or paid caregiver, a volunteer suffering from a physical or mental health status incompatible with patient's care, or following another psychoeducational program.
Strategies to communicate about the program include flyers and posters in medical waiting rooms of the Memory Center as well as in other places in the Broca Hospital. An information meeting for the hospital staff has been organized before starting the inclusions in order to explain the study protocol. Then, the contact forms are available in every counseling room and in the waiting room.
The participants are recruited either during the follow-up consultation of a patient: (1) the geriatrician/neurologist delivers the general information about the protocol and gives a contact form to fill in and drop off at the Memory Center’s reception desk, or (2) the CGs fill in the contact form available in the waiting room and drop it off at the Memory Center’s reception desk.
One of the two research psychologists previously trained in the protocol contacts the caregiver, checks his/her eligibility criteria and explains the benefits, constraints, and schedule of the protocol. The psychologist gives an information notice to the caregiver and proposes to contact him/her a few days later. If the caregiver agrees with the protocol and meets the criteria for inclusion, the screening session (M0) is scheduled with the caregiver.
A computer-generated randomization list is used to assign the participants in the experimental condition (EC) group or in the control condition (CC) group after assessment with PSS-14 and all the inclusion and noninclusion criteria are checked. Blocking and stratification by gender and relationship (spouses versus nonspouses) were used to generate the randomization list.
The Diapason program is an adapted fully automated computerized version of a psychoeducational program (AIDMA) created by the Geriatric Service of Broca Hospital. Usability of Diapason program was evaluated in a previous experimental study (pre/post). The study involved the assessment of 30 volunteer participants 60 years or older, with various levels of expertise in Internet use, during a guided visit. After modifications and adaptation of the website, the performances of beginners and experts were similar .
Diapason is a free password-protected website. Figure 1 shows the home page. The program is run in twelve thematic weekly sessions organized in the following order: (1) caregiver stress, (2) understanding the disease, (3) maintaining the loved ones’ autonomy, (4) understanding their reactions–how to recognize behavioral and emotional troubles, (5) coping with behavioral and emotional troubles, (6) communicating with loved ones, (7) improving their daily lives, (8) avoiding fall risks, (9) pharmacological and nonpharmacological interventions, (10) social and financial support, (11) about the future, (12) in a nutshell–a summary of Diapason program.
Globally, these twelve sessions cover the following areas: (1) information about AD diagnosis, symptoms, treatment, and progression, (2) how to cope with stressful situations, and (3) information about socioeconomic support and preventive gestures. A new session is available each week, after the validation of the previous session. Furthermore, the website also contains: (1) relaxation guidelines and training videos (based on Schultz’s Autogenic Training and Jacobson’s method) [22,23], (2) stories based on testimonials of caregivers, used to show critical situations and possible solutions to manage them (eg, apathy of patient, caregivers’ isolation), (3) a glossary for the technical words (eg, neuropsychological assessment, aphasia), (4) stimulation guidelines and entertainment activities to do with the patients, and (5) a forum allowing users to establish contact with other caregivers anonymously, express their concerns, discuss solutions to daily problems, and share their feelings and experiences. The participants use nicknames to protect their privacy. A clinical psychologist takes part in discussions if necessary (ie, aggressive or inappropriate comments).
Participants involved in experimental group have to validate one session per week during 12 weeks (about 10 minutes per session), and complete a satisfaction survey corresponding to each session. During the first evaluation (M0) the participant is trained by a psychologist in how to use the website. At the second visit (M3) the participant is requested to provide the satisfaction paper-based survey filled out.
[view this figure]
|Figure 1. Home page.|
Participants randomized in the CC group receive usual care. It consists of a geriatric semiannual follow-up appointment during which the caregiver obtains illness information from the geriatrician. The volunteers receive the access code to the Diapason website at the end of their participation in the research protocol. Every participant of the CC group is advised to look for more specific help (ie, that of a psychologist or a physician) when he/she feels it necessary and then to report it to the main investigator.
Measures and Procedures
The physicians of the Memory Center have been informed on the study protocol and have received training in inclusion criteria screening. They provide the caregiver with some information about this study at the end of the consultation with the patient. Then the physician gives a contact form to the volunteers interested in participating in the study. The research psychologist contacts the person, presents the protocol study, and provides the caregiver with the information sheet. When the participant delivers a positive answer, the first visit (M0) at the hospital is scheduled together with the psychologist.
The duration of each visit (M0-M3 and M6) is estimated to 90 minutes. The baseline visit is usually conducted as follows:
- The research psychologist answers the questions on the information notice and the participant signs the informed consent if he/she agrees.
- Evaluation with PSS-14 (primary outcome).
- Randomization if PPS-14 total score is 12 or over.
- Demographical interview and control questions of caregiver and patient’s variables.
- Assessment of secondary variables (researcher-administered, and then self-administered surveys).
- The participants randomized in the EC receive the material (weekly paper-based survey, a journey book, and a user’s manual of the website) and a personal access code to the website. Then, they are trained on how to use the Web-based program.
- The CC participants are notified that they will receive a website access at the end of their participation to this protocol (6 months after M0).
- Planning follow-up visits (M3-M6).
For the CC and EC groups, the assessments at M3 and M6 visits are similar, and go as follows: (1) evaluation of caregiver variables (time spent on caregiving, use of respite resources, stressful events, etc) and patient status (hospitalization or other unexpected event occurred in the last three months), (2) measurements with self-administered scales or administered by an interviewer. The measures used in this RCT are summarized in Table 1.
[view this table]
|Table 1. Overview of measures in the baseline and follow-up visits.|
Primary Outcome Measure: PSS-14
Stress perceived by the caregiver is measured by the French version of the Perceived Stress Scale, the version of 14 items from Cohen et al , translated into French by Bruchon-Schweitzer in 2002 . The PSS-14 is a widely used self-reported scale evaluating the general appraisal of stress in the last month. It consists of 14 items, with scores ranging from 0 (never) to 4 (very often). This scale has demonstrated a high reliability and validity in several studies . The total score range for this scale is 0-56. Due to numerous roles of caregivers (as mentioned above) and in order to target stress specifically related to a caregiving role, we adapted the instruction of the PSS-14 by proceeding with hetero evaluation and adding the following text in bold: "this scale ask[s] you about your feelings and thoughts about your experience with your relative during the last four weeks." The rest of the instruction is similar to that proposed by Cohen in 1983.
Secondary Outcomes Measures Administered by an Interviewer
The Revised Scale for Caregiving Self-Efficacy was validated in 2002 by Steffen et al  and translated into French by Marziali and Garcia in 2011 . This scale offers a simple and effective way to evaluate caregivers’ self-efficacy on: (1) obtaining respite, (2) controlling upsetting thoughts, and (3) responding to disruptive patient behaviors. Each section has five items arranged from easiest to most difficult (based on research results) . For each item the participants choose a score between 0 and 100, based on their degree of confidence for each situation. This scale should be administered by an interviewer .
Perceived Behavioral and Cognitive Problems
The Revised Memory and Behavior Problem Checklist  is a widely used scale that rates the caregiver’s perceived frequency of occurrence of behavioral and cognitive problems and the caregiver’s perceived distress facing these problems. It explores 24 situations in which the caregiver estimates: (1) the frequency of situations/problems during the last week, and (2) the caregiver’s response to each situation/problem. Satisfactory internal consistency coefficients of reliability have been reported (for frequency of behaviors .93 and for reaction .90) .
Secondary Outcomes Measures Self-Administered
Zarit Burden Interview
The Zarit Burden Interview (ZBI) is a subjective measure of burden that includes 22 items exploring the caregiver’s perception and feelings about care situations. There are three factors that could explain 56.3% of global score variance: (1) caregiver’s social and personal life, (2) psychological burden, and (3) caregiver’s guilt . The score range is 0-88, a higher score indicating a higher burden level.
Bucquet et al  validated the Nottingham Health Profile in France. We use this scale to evaluate the self-reported morbidity of caregivers. There are 38 items that are grouped in 6 dimensions: (1) physical mobility, (2) social isolation, (3) emotional reactions, (4) pain, (5) sleep, and (6) energy. In the French validation study, weights were calculated using Thurstone's Paired Comparisons . The addition of this item totals a hundred per dimension and corresponds to the percentage of the illness impact perceived by each individual.
The sociodemographic variables and general information on caregiver situation collected are age, sex, educational level, relationship with the patient (spouse versus nonspouse), current psychopharmacological treatment, current psychosocial services and respite care (daycare centers for the patient, in-home care services, etc), time spent per week with the patient, and their “free time”. Moreover, the quality of the relationship with the patient, the caregiver’s confidence in his/her ability to cope with the consequences of the disease, and the caregiver’s level of knowledge about AD are evaluated with the Visual Analogical Scales.
Participants in the EC complete a satisfaction survey each week, after watching the weekly program. Therefore, qualitative information about perceived utility of this program is obtained during the face-to-face interviews in the visits M3 and M6. Moreover, the frequency and duration of the Web-based program use for each participant is stored and anonymously analyzed at the end of the study.
The global cognitive status of patients is evaluated with the Mini-Mental State Examination (MMSE)  and obtained from the patients’ medical file, if the patient accepts it (during follow-up at the Memory Center the patients with AD are evaluated with neuropsychological batteries, including the MMSE evaluation). The degree of dependency from the patient is evaluated by the French version of the Instrumental Activities of Daily Living  reported by the caregiver at M0, and the duration of symptoms is also based on the caregivers’ report.
Data Management and Statistical Analysis
Data are collected via an electronic case-report form, then centralized, and stored on a secured server using the “CleanWEB” system . A monitoring of records is planned every two months and done by an external agent to control the respect of protocol and procedures according to Clinical Best Practices guidelines .
This study protocol was submitted to the French ethical CPP and received approval on July 2011. Before they enter the study, all participants receive an information sheet and sign a written consent form.
The study provides equal opportunity to access the program. Caregivers who do not meet the inclusion criteria can access the website and program as external participants. Also, every participant is asked to search another form of help (ie, that of a psychologist or a physician) if he/she feels the need to, and to report it to the main investigator.
The sample size has been calculated by the Biostatistics and Epidemiology Department of the Hôtel-Dieu Hospital (Paris). Based on the literature , a 6-point difference on PSS-14 scale is expected between EC and CC at the posttest evaluation (M3). With an assumed standard deviation of 9, 40 participants per group should be included to be able to detect such a difference with an 80.0% power (Cronbach alpha=.05; two-tailed).
The Biostatistics and Epidemiology Department of the Hôtel-Dieu Hospital will perform statistical analysis. All the analyses will be conducted according to the intention to treat principle and to handle with missing data; multiple imputations will be used if the missing at random or missing completely at random hypothesis holds. Otherwise sensitivity analysis will be done. No interim analysis will be performed.
A description of the characteristics of the two groups will be performed using percentages for categorical variables and means with standard deviation for quantitative variables. For primary and secondary outcomes, student t tests or a Wilcoxon test if required, as well as covariance analysis to take the regression to the mean into account, will be used to compare means between experimental and control groups. Percentages will be compared using chi-square test or Fisher’s exact test if required. Calculations will be performed using SAS software.
Qualitative data obtained during visits M3 and M6 from EG participants’ perception on the program’s utility and satisfaction will be analyzed by Broca’s research team, using thematic analysis .
Statistical analysis will exclude data from: (1) caregivers performing less than two thirds of the online program (participant validates fewer than 8 out of 12 sessions), (2) dropouts due to mental or physical state of the caregiver becoming incompatible with this research protocol.
This study protocol is quite innovative. To our knowledge, it is the first French Web-based program evaluated with a randomized clinical trial. The Diapason program has been conceived to offer a primary access to basic information about the illness progression and practical advice to reduce stress and manage the daily life for Alzheimer’s CGs. In coherence with other studies, we are convinced that the Internet for health is an interesting tool to inform and support the isolated CGs , at a reduced cost, but with increasing convenience for users .
We are interested in evaluating the program effectiveness on self-perceived stress. Although the ZBI is often used to measure the CG stress in the context of dementia , the burden construct is relatively complex and not specific enough. In fact, two factor analyses of the ZBI identified three dimensions: (1) personal strain, (2) role strain, and (3) guilt , or (1) social impact, (2) psychological burden, and (3) guilt . Based on these results we decided to use a PSS 14-item version and to adapt the main instruction of PSS to caregivers’ strain. However, in this protocol we use the ZBI as a secondary outcome, and it would be interesting to compare the results obtained with each of these measurement instruments.
Strengths of the Study
In our opinion, four main strengths are identifiable in this protocol.
First, since most elderly caregivers (spouses) do not have sufficient experience with the Internet, 30 elderly volunteers participated in the usability tests, which allowed us to modify and adapt the website prior to the present study. The usability tests increase the likelihood of inexperienced Internet users to use Web-based programs and offers access to a widespread population who has never navigated on the Internet because it was considered as too complex or difficult to use.
Second, our Web-based program (Diapason) keeps a structure that is similar to an on-site psychoeducational program, such that it proposes a thematic session weekly. In this way, we control the information viewed by the caregiver according to a specific schedule. In fact, the EC is not completely controlled if the access to the information is determined by the choice of the patient. In our opinion, controlling the order and access to main thematic areas should improve the reliability of results because all the participants receive the same information.
Third, we are aware of the positive impact of social networking and communication between peers for CGs. We did not have enough human resources to offer a virtual presence or face-to-face participation, nevertheless we integrated a forum in the website which enables the CGs to ask and share experiences, feelings, and advice with their peers, with the participation of a psychologist as moderator This initiative represents a first step towards more comprehensive and interactive Web-based initiatives that our team has scheduled to build, optimizing social networking perspectives, as advised by recent works [44,45].
Fourth, we will analyze the data of Web server utilization from each user and compare it with their satisfaction and appraisal of the effectiveness of the program. This objective information will help us to know the system use, and its acceptability. Our purpose with these results is also to identify the "user profiles" with a highest adherence to or benefit from the program. For instance, do spouses or nonspouses benefit more from the program? Is the time spent on the program website associated with the level of stress after the 12 sessions? Or is there minimum time duration of navigation to observe some benefit from the program?
In conclusion, the results of this study will allow a better targeting of beneficiaries, for whom the intervention will be more efficient. The results will provide strong support to influence health care policies and facilitate the financial support of these initiatives.
This study was partially funded by French Health Minister (Projet de Recherche en Qualité Hospitalière 2009–PREQHOS 2009) and by ”Fondation Méderic Alzheimer” project grants 2012-2014. The Clinical Research Unit of Cochin Hospital (Unité de Recherche Clinique/Centre d’Investigation Clinique Necker Cochin–under the direction of Jean-Marc Tréluyer) monitors the study. The authors thank all professionals of the Gerontology Department who contributed to the Diapason program, as well as Bénédicte Batrancourt and Marwan El Haj for the creation of the Diapason website, Jérémy Wrobel for his participation in this study, and Etienne Audureau for his statistical advices.
VCL is the trial manager of the study, contributed to the study design, conception, and preparation of the manuscript. HK contributed to the study design and edited the paper. JDR provided methodological advice, oversaw the adaptation of psychoeducational program, and contributed in the edition of the paper. AR provided statistical and methodological advice, undertook the randomization process, and revised the paper. GL participated in the project group. ASR is the main investigator, contributed to the study concept, to the supervision of the study, oversaw the implementation of the project, and revised the paper. All authors read and approved the final manuscript.
Conflicts of Interest
Multimedia Appendix 1
CONSORT-EHEALTH checklist V1.6.2 .[PDF File (Adobe PDF File), 996KB]
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|AD: Alzheimer’s disease|
|AIDMA: Aide dans la Maladie d’Alzheimer program|
|CC: control condition|
|CGs: Informal caregivers|
|CPP: Centre de Protection de Personnes|
|EC: experimental condition|
|ICT: information and communications technology|
|MO: month 0|
|M3: month 3|
|M6: month 6|
|MMSE: Mini-Mental State Examination|
|PSS-14: Perceived Stress Scale of 14 items|
|ZBI: Zarit Burden Interview|
|Edited by G Eysenbach; submitted 26.09.13; peer-reviewed by K Rockwood; accepted 26.10.13; published 06.12.13|
Please cite as:
Cristancho-Lacroix V, Kerhervé H, de Rotrou J, Rouquette A, Legouverneur G, Rigaud AS
Evaluating the Efficacy of a Web-Based Program (Diapason) for Informal Caregivers of Patients With Alzheimer’s Disease: Protocol for a Randomized Clinical Trial
JMIR Res Protoc 2013;2(2):e55
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Copyright©Victoria Cristancho-Lacroix, Hélène Kerhervé, Jocelyne de Rotrou, Alexandra Rouquette, Grégory Legouverneur, Anne-Sophie Rigaud. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 06.12.2013.
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