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Do empowered stroke patients perform better at self-management and functional recovery after a stroke? A randomized controlled trial

Authors Sit JW, Chair SY, Choi KC, Chan CW, Lee DT, Chan AW, Cheung JL, Tang SW, Chan PS, Taylor-Piliae RE

Received 30 March 2016

Accepted for publication 23 May 2016

Published 13 October 2016 Volume 2016:11 Pages 1441—1450

DOI https://doi.org/10.2147/CIA.S109560

Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Prof. Dr. Zhi-Ying Wu


Janet WH Sit,1 Sek Ying Chair,1 Kai Chow Choi,1 Carmen WH Chan,1 Diana TF Lee,1 Aileen WK Chan,1 Jo LK Cheung,1 Siu Wai Tang,2 Po Shan Chan,2 Ruth E Taylor-Piliae3

1The Nethersole School of Nursing, The Chinese University of Hong Kong, Shatin, New Territories, 2Department of Medicine and Rehabilitation, Tung Wah Eastern Hospital, Hong Kong Hospital Authority, Causeway Bay, Hong Kong, People’s Republic of China; 3College of Nursing, The University of Arizona, Tucson, AZ, USA

Background: Self-management after a stroke is a challenge because of multifaceted care needs and complex disabling consequences that cause further hindrance to patient participation. A 13-week stroke patient empowerment intervention (Health Empowerment Intervention for Stroke Self-management [HEISS]) was developed to enhance patients’ ability to participate in self-management.
Purpose: To examine the effects of the empowerment intervention on stroke patients’ self-efficacy, self-management behavior, and functional recovery.
Methods: This is a single-blind randomized controlled trial with stroke survivors assigned to either a control group (CG) receiving usual ambulatory rehabilitation care or the HEISS in addition to usual care (intervention group [IG]). Outcome data were collected at baseline (T0), 1 week (T1), 3 months (T2), and 6 months (T3) postintervention. Data were analyzed on the intention-to-treat principle. The generalized estimating equation model was used to assess the differential change of self-efficacy in illness management, self-management behaviors (cognitive symptom management, communication with physician, medication adherence, and self-blood pressure monitoring), and functional recovery (Barthel and Lawton indices) across time points (baseline = T0, 1 week = T1, 3 months = T2, and 6 months = T3 postintervention) between the two groups.
Results: A total of 210 (CG =105, IG =105) Hong Kong Chinese stroke survivors (mean age =69 years, 49% women, 72% ischemic stroke, 89% hemiparesis, and 63% tactile sensory deficit) were enrolled in the study. Those in IG reported better self-efficacy in illness management 3-month (P=0.011) and 6-month (P=0.012) postintervention, along with better self-management behaviors at all follow-up time points (all P<0.05), apart from medication adherence (P>0.05). Those in IG had significantly better functional recovery (Barthel, all P<0.05; Lawton, all P<0.001), compared to CG. The overall dropout rate was 16.7%.
Conclusion: Patient empowerment intervention (HEISS) may influence self-efficacy in illness management and improve self-management behavior and functional recovery of stroke survivors. Furthermore, the HEISS can be conducted in parallel with existing ambulatory stroke rehabilitation services and provide added value in sustaining stroke self-management and functional improvement in the long term.

Keywords: self-management, patient empowerment, stroke, rehabilitation, functional recovery, activities of daily living
 

Introduction

Neurological and neuropsychiatric conditions, such as traumatic brain injury, Parkinson’s disease, dementia, and stroke, are often characterized by considerable deficits that significantly reduce patients’ functional abilities and their overall quality of life. Particularly, stroke is a major cause of long-term disability worldwide, representing a substantial health care burden.1 In Hong Kong, there are ~16,000 new stroke cases, with >3,000 deaths each year.2 People living with stroke face enormous challenges in physical, psychological, and social aspects of their lives throughout the poststroke recovery period. Stroke survivors often experience depression, functional deterioration, reduction in mobility and life roles, and a lack of professional and social support.3,4 However, current rehabilitation care mainly focuses on improving physical functioning, while the difficulties encountered in daily life, the psychosocial consequences poststroke, receive less attention.3,5 Clearly, relying solely on hospital or institutional rehabilitation services is costly and unsustainable. To respond to these challenges, priority must be given to rehabilitation strategies that support stroke survivors to maximize their full potentials to manage their health and lives after hospital discharge so as to live a complete and independent life as much as possible. Empowering stroke survivors in self-management poststroke could be a more cost-effective approach.

Self-management was defined by Barlow et al6 as “an individual’s ability to manage the symptoms, treatment, physical and psychosocial consequences, and lifestyle changes inherent with living with a chronic disease”. Health professionals communicate with patients on their self-management options and support them in dealing with ongoing challenges while living with the chronic disabling condition.3 Considerable evidence supports the effectiveness of self-management interventions for chronic diseases (eg, cardiovascular disease, arthritis, diabetes) in producing favorable behavioral and health outcomes.3,79 Promoting the engagement of stroke survivors in self-management has become an emerging priority because of the increased recognition of the chronic nature of stroke and its related disabling consequences and poststroke sequela. The potential application of self-management interventions for stroke survivors has attracted research interest in recent years. However, to date, the evidence base for self-management in poststroke care is still very limited. A systematic review by Lennon et al10 on poststroke self-management interventions found significant findings in six of nine fair-quality randomized controlled studies with favorable outcomes on disability measures, confidence in recovery, quality of life, and physical functioning in the intervention group (IG). The authors suggested that more high-quality randomized controlled trials were warranted to identify an effective intervention to foster self-management poststroke.

Empowerment is a process that facilitates participation in health and health care decisions and is manifested in awareness of choices to participate in change and self-management behavior, ultimately promoting the well-being of the individual.11 The theory of health empowerment proposed by Shearer11 views empowerment as a relational process emerging from recognition of personal and social contextual resources for individuals who have limited awareness of and access to these resources. The theory was primarily developed for homebound older adults, and pilot findings supported its efficacy.12 According to Shearer,11 personal resources include the unique characteristics of individuals, while social–contextual resources are obtained from social networks and social services. Among stroke survivors, self-efficacy is the most extensively studied personal resource and was found to be associated with various outcomes poststroke, including quality of life, depression, activities of daily living, and physical functioning.13,14 Self-efficacy was defined by Bandura15 as the confidence in an individual’s ability to perform a particular behavior. It is a behavior-specific psychological construct. As for social–contextual resources, stroke survivors and their caregivers expressed a high unmet need for professional support of self-management after discharge from hospital.1618 Nurses act as an important source of professional support during the transition from hospital to home, as they work alongside patients and have closer contact with them and their families during poststroke rehabilitation.16

Based on Shearer’s theory of health empowerment, we developed a nurse-led 13-week Health Empowerment Intervention for Stroke Self-management (HEISS) to foster patients’ inner resources (self-efficacy) and social–contextual resources (supportive relationships) to enhance self-management poststroke. The aim of the study was to examine the effect of the HEISS on self-efficacy, self-management behavior, and functional outcomes compared with a control group (CG) receiving usual care.

Methods

Study design

This is a two-arm single-blind randomized controlled trial (Clinical trials registration: ISRCTN08913646). Stroke survivors were randomized into equally sized control and intervention conditions, using a computer-generated block randomization of 6. Allocation sequence was generated using sequentially numbered and opaque sealed envelopes. Group assignment was done by independent research personnel who did not involve in the generation of the randomization schedule, the recruitment of patients, and data collection. Patients in CG received the usual care customarily provided by the ambulatory stroke rehabilitation program, predominantly including physiotherapy, occupational therapy, and patient education. Patients in IG received the HEISS in addition to usual care.

Participants

Stroke survivors attending the Ambulatory Rehabilitation Centre of a subacute hospital were recruited. A total of 419 patients were screened for eligibility, including adults who had experienced a first stroke either hemorrhagic or ischemic, were scheduled for the ambulatory stroke rehabilitation, and experienced poststroke functional difficulties that limited self-care. Stroke survivors with aphasia, cognitive impairment (mini-mental state examination score <18), coexisting severe/life-limiting diseases, premorbid activities of daily living (ADL) dependence, diagnosed with depression, or on antidepressive treatments were excluded. The study was approved by the Hong Kong East Cluster Human Ethics Committee. Written informed consent was obtained from each participant before the study started.

Sample size calculations were based on published Cohen’s effect sizes (d) of similar interventions on the outcome variables of interest including self-efficacy, self-management behavior, and self-care, ranging from 0.4 to 0.5,19 0.7,20 and 0.5 to 0.6,19 respectively. For conservative sample size estimation, the smallest effect size was adopted. It is estimated that 105 subjects per study arm would produce 80% power at 5% level of significance to detect a mean difference of 0.4 standard deviation in self-efficacy score between the IG and CG at posttest (T1), assuming no between-group difference exists in this outcome measure at baseline after randomization and allowing for a 20% dropout rate.

Intervention

Participants in IG received the HEISS in addition to usual care. The intervention aimed to empower stroke survivors with “how to” knowledge and skills to enhance self-management in conjunction with their poststroke rehabilitation journey. The HEISS consisted of two parts: part 1 had 6-weekly small group sessions from week 3 to week 8 in parallel with the ambulatory rehabilitation schedule (usual care); groups of four to six participants were given an opportunity to establish a partnership with the nurse facilitator for stroke self-management to begin personal goal setting and action planning. Self-efficacy activities to develop self-management skills and articulating participants’ health needs with their personal resources for goal attainment were provided through mastery, verbal persuasion, vicarious experience, and physiological feedback.13 A mutually agreed-upon personal rehabilitation goal setting and action plan was devised on completion of the 6-weekly group sessions, and participants were given a personal stroke self-management workbook to guide their implementation at home.

Part 2 included the home-based implementation during weeks 9–13 with biweekly telephone follow-up calls to the participants during this period. The purpose of the telephone follow-up was to encourage and commend participants on their actions for positive changes and to provide problem-solving skills to overcome any perceived barriers that participants encountered. The protocol for the telephone follow-up calls was adapted from Eakin et al.21 The nurse facilitator provided feedback with a series of self-management steps and problem-solving strategies to strengthen confidence and motivation. Adherence to or deviations from the agreed action plan in current behavior were addressed to identify the facilitating factors or barriers for change. Table 1 summarizes key components of the HEISS.

Table 1 HEISS empowerment sessions for stroke self-management
Note: aThe HEISS commenced in week 3 because all stroke patients (both CG and IG) had to attend two health talk sessions in week 1 and week 2 (usual care in the ambulatory rehabilitation schedule).
Abbreviations: BP, blood pressure; CG, control group; HEISS, Health Empowerment Intervention for Stroke Self-management; IG, intervention group.

Outcome measures

Self-efficacy and self-management behavior

Self-efficacy and self-management behavior were assessed using the Chinese Self-Management Behavior Questionnaire originally developed by Lorig and translated and validated by Siu et al22 in Hong Kong. It includes 1) self-efficacy in illness management (six items), 2) cognitive symptom management (six items), and 3) communication with physicians (three items). Each of the subscale components on self-efficacy was measured on a Likert scale to examine the frequency of a specific form of self-management behavior. The questionnaire shows internal consistency with a Cronbach’s alpha ranging from 0.72 to 0.91 and retest reliability r=0.62–0.80.22 A further two components applicable to indicators of stroke self-management were added: medication adherence (four items)23 and self-blood pressure (BP) monitoring (two items).

Functional outcomes

For functional ability outcomes, two instruments were used: the modified Barthel index (BI)24 and Chinese Lawton instrumental ADL (IADL).25 The BI assesses basic ADL performance on a personal level. This ten-item scale gives a summative score with a maximum of 100, higher scores indicating higher levels of independence in personal self-care activities. The reported Cronbach’s alpha ranged from 0.87 to 0.92, test–retest reliability had r=0.89, and concurrent validity was assessed with the index of motor ability at 0.77.24 The nine-item Chinese Lawton IADL scale was used to assess extended ADL performance on independent living. The reported Cronbach’s alpha of the IADL score was 0.86,25 higher scores indicating higher levels of independence.

Data collection procedures

Outcome measures were collected through researcher-administered questionnaires at four time points: pretest (T0), 1 week posttest (T1, the week after HEISS), 3 months posttest (T2), and 6 months posttest (T3). Demographic, clinical, and lifestyle data were collected from self-reports and medical records. Two independent research assistants were trained for data collection according to a standardized protocol. Interrater reliability ranged from 0.88 to 1.0. Adhering to the single-blind method, the two research assistants were blinded to study design and group allocation.

Data analysis

The intention-to-treat principle was adopted for data analysis. Baseline demographic and clinical data between CG and IG were compared using independent t-test, chi-square test, or Fisher’s exact test where appropriate. Generalized estimating equation (GEE) models were used to assess differential changes in each outcome variable between two groups across the time points T0, T1, T2, and T3. Dummy variables representing group and time points were assigned to correspond the IG with CG as the reference and to correspond T1, T2, and T3 with the baseline (T0) as the reference. The interaction terms for group and time point dummy variables were included in the GEE models to assess the differential changes of the outcome variables at each posttest time point with respect to the baseline between the two groups. All statistical analyses were performed using IBM SPSS 22 (IBM Corporation, Armonk, NY, USA). All statistical tests were two-sided, and a P-value <0.05 was regarded as statistically significant.

Results

A total of 210 stroke patients enrolled to the study. The participant recruitment, randomization, and retention flowchart for the study is shown in Figure 1. The overall dropout rate was 16.7%, with 11.4% for IG and 21.9% for CG. Demographic, lifestyle, and clinical characteristics between completers and those who dropped-out were compared, with no statistically significant differences found.

Figure 1 Flow diagram of participant recruitment.
Abbreviations: CG, control group; IG, intervention group.

Stroke survivors in this study were predominately older adults with a mean age of 69 years old (SD =14.1). Of these, 31.9% were <65 years, 52.4% were males, and the majority were married (72.4%). All participants required assistance from caregivers after the stroke mainly (87.6%) provided by informal caregivers (either relatives or paid domestic helpers). The majority (72%) of participants suffered from ischemic stroke, which resulted in hemiparesis (89%) and tactile sensory impairment (63%).26 Seventy percent of the stroke participants reported hypertension before the stroke. The IG and CG participants’ demographic characteristics and clinical profile were compared, with no statistically significant difference was found, apart from IG participants reported more heart disease (Table 2).

Table 2 Baseline sociodemographic characteristics and clinical profile of participants (N=210)
Notes: Data are presented as frequencies (%) unless stated otherwise. aData are presented as mean (standard deviation); bbetween-group comparison was performed by Student’s t-test. Categorical variables were compared between the two groups using Pearson’s chi-square test, those marked ‘c’ were compared using Fisher’s exact test.

Table 3 shows the mean score of the outcome variables: self-efficacy in illness management, self-management behaviors, and functional ability across the baseline (T0) and three postintervention time points, 1 week (T1), 3 months (T2), and 6 months (T3).26

Table 3 Primary and secondary outcomes of control and intervention groups across time
Notes: Data are presented as mean (standard deviations) unless stated otherwise. aData are presented as frequencies (%).
Abbreviations: BI, Barthel index; BP, blood pressure; IADL, instrumental activities of daily living.

To evaluate the differential changes of each of the outcome variables across the time points (T1, T2, and T3 with T0 as the comparison) between IG and CG, a GEE model was used, which can take into account baseline outcome values and the intracorrelation of the repeated measures outcome across time. The differential changes in each outcome variable were assessed by the regression coefficients of the group by time point interaction terms in the model. Table 4 shows the outcome results of the GEE model. Participants in IG showed more favorable improvements in all outcomes at all postintervention time points, than those in CG.

Table 4 GEE models for outcomes comparison across time between control and intervention groups
Notes: T1, 1-week posttest; T2, 3-month posttest; T3, 6-month posttest. Only the model estimates of regression coefficients of the dummy variables for the group (Group: 0= control [reference]; 1= intervention), time points (T1, T2, and T3 with the baseline [T0] as reference), and time points and group interaction terms (Group × T1, Group × T2, and Group × T3) are shown for the GEE models. aThe binary outcomes were entered into GEE models with the use of binary logistic link function, and the regression coefficients are presented as odds ratio. *P<0.05; **P<0.01; ***P<0.001.
Abbreviations: BI, Barthel index; BP, blood pressure; CI, confidence interval; GEE, generalized estimating equation; IADL, instrumental activities of daily living.

In particular, IG had significantly better self-efficacy in illness management at 3-month (T2) and 6-month (T3) postintervention (P=0.011 and P=0.012, respectively) than CG. In the four outcomes used to assess self-management behaviors (ie, cognitive symptom management, communication with physician, medication adherence, self-BP monitoring), significantly better cognitive symptom management was reported by those in IG across all three time points (all P<0.001) than CG. Stroke survivors in IG reported significantly better communication with their physicians at T1 (P<0.001) and T2 (P=0.002) compared to CG, but no significant difference between groups was observed at T3 (P=0.094). There was no significant difference in medical adherence between IG and CG, for any of the postintervention time points (all P>0.05). However, those in IG reported significantly better self-BP monitoring at all three postintervention time points (odds ratios of the group by time point interaction terms at T1, T2, and T3 were P=0.005, P=0.005, and P=0.025, respectively) than those in CG (Table 4).

Functional ability among the IG participants had significant improvement in ADLs according to the BI (P=0.005, P=0.016, and P=0.03 at T1, T2, and T3, respectively), when compared to those in CG. When examining IADLs using the Lawton’s measure, those in IG had significantly better improvement across all three postintervention time points (all P<0.001) at T1, T2, and T3, respectively, compared to CG (Table 4).

Discussion

This study assessed the effects of HEISS on self-management during the ambulatory stroke rehabilitation phase. Study results indicate that the HEISS was effective in improving self-efficacy in illness management, self-management behaviors (cognitive symptom management, communication with physician, and self-BP monitoring), and functional recovery (BI and Lawton index), compared to controls.

When compared with baseline data, the effect of HEISS on improving self-management was more prominent at the T1 (1 week posttest) and T2 (3 months posttest) and waning slightly by T3 (6 months posttest). This finding suggests that the beneficial effects of the HEISS intervention were stronger during the earlier two time points. The explanation for the reduced effect at T3 could possibly lie in patients’ gradual recovery of mobility or a gain of confidence, leading to adaptations with their poststroke recovery. On the other hand, it could be that less contact with health professionals and no booster reinforcement 6 months after the intervention may partly explain this reduced effect. Self-management behavior in improved medication adherence was not found. This may have been due to more vigilant medication compliance on the part of both groups, especially after a major health event such as a stroke. Moreover, medication adherence has always been a major focus of patient education in stroke rehabilitation in Hong Kong (usual care); thus, participants in the CG may have received strategies for enhancing medication adherence, which may partly explain the lack of a significant difference between groups.

According to Bandura’s27 social cognitive model, self-efficacy is defined as a psychological construct that describes people’s belief in their own ability to perform and succeed in a particular situation. It can be improved through mastering an activity and by observing others performing a task. Peer influence and support during the rehabilitation period are important, enabling stroke patients with similar disabilities to work together and motivate one another to deal with a difficult activity or task. Positive encouragement through verbal persuasion from health care personnel during HEISS can also help to motivate participants little by little, in a gently progressive manner. Also, during small group sessions, acknowledgment by nurses and peers of small achievements further strengthens a person’s self-efficacy and thus positively reinforces self-management behavior.

Our findings are in line with Johnston et al,28 suggesting that improvement in self-efficacy may produce more long-term value in sustaining stroke survivors’ belief in their own capabilities to overcome the negative impact of stroke. It is possible that during the course of recovery, those in HEISS experienced improved self-efficacy over time than those not receiving the intervention.

The BI and Lawton IADL are measures of functional aspects of daily living. The BI for the CG improved over time with slight fluctuation over the three time points, whereas the IG’s improvement was more significant over these periods. A similar observation was applied to the IADL measure, whereas a more stable improvement was seen in the IG. It is suggested that the IG’s steady improvement in functional ability reflected the positive effects of HEISS in this group of stroke survivors. Possible explanation for the functional gain in ADL could be that, in HEISS, the behavioral goals and action plans that are relevant to the activity limitation domain after stroke consist primarily of self-care tasks in ADL. The empowerment process of HEISS enabled participants to set personal goals and action plan for day-to-day self-care activities, as well as developed their problem-solving ability and resource utilization for goals attainment. Furthermore, congruent with improvements in self-efficacy in illness management over time, HEISS participants possibly experienced success in day-to-day illness management and become more able to minimize the negative impacts of physical symptoms on performing ADL. The results of this study are in line with those of previous studies where the positive effects of stroke self-management programs on functional outcomes were reported.19,2830 On the other hand, the fluctuations observed in the CG (both BI and IADL) are possibly related to variation in day-to-day illness management ability and coping when faced with difficulties or physical symptoms.

Interpretation of the findings should take into consideration the limitations of this study. First, the intervention adopted a multifaceted approach; therefore, the specific component in HEISS that was effective could not be readily determined. Second, the positive changes reported by the participants in the IG could have resulted from different intensity levels of professional attention received by the two groups, even though similar nurse–patient time was scheduled for face-to-face and telephone contact to balance the attention effects for those in the CG. Third, self-management behavior was assessed using self-report. This might have led to overreporting of what was seen as desired behavior by the participants, despite the measures put in place to reduce social desirable tendencies. Finally, the baseline characteristics between those who have completed data collection and those who have dropped-out were essentially comparable, and hence, the dropout cases would unlikely be informative. Nevertheless, there might be potential biases in the study results owing to particularly uneven dropout rates in the two groups. The effects of the intervention might be overestimated if most of the dropped-out cases had better outcome measures, or vice versa.

Implications for service planning and health policy

Stroke is an acute event with long-term chronic disabling consequences requiring nursing and rehabilitation attention beyond the in-patient period. However, continuity and integration between hospital and community care often become challenging. Using ambulatory rehabilitation services as a platform, the integration of hospital- and home-based rehabilitative care could be better structured to serve as a bridge for transitional care in stroke survivors’ rehabilitation journey. Our findings suggest that stroke patient empowerment intervention could be incorporated into the ambulatory rehabilitation phase, where it becomes more feasible for ongoing professional support could be employed to aid stroke survivors to assume responsibility for and participate in stroke self-management in a home setting. Findings from this study also suggest that implementation of HEISS has the potential to strengthen stroke survivors’ self-efficacy in illness management and sustain stroke self-management over the longer term.

Conclusion

This study demonstrates that health empowerment has moved beyond simply providing patients with the knowledge and skills needed for self-care. Health empowerment is a process of enhancing patients’ self-belief, which makes them willing and able to play an active role in managing their own health and exercise influence over events that affect their lives during the stroke rehabilitation journey. We found that the stroke patient empowerment intervention (HEISS) brought added value to the existing ambulatory stroke rehabilitation services as far as functional outcomes were concerned. Our findings suggest that stroke patient empowerment intervention could be incorporated at the ambulatory rehabilitation phase, where the ongoing professional support through nurse–patient partnership may improve continuity of care and produce more effective interface with home-based rehabilitation in the early stroke recovery period.

Acknowledgments

The authors sincerely thank the stroke survivors who participated in this study. This study was funded by the Health and Medical Research Grant (09100551). Part of findings reported in this paper were presented at the Stroke Nursing Symposium, International Stroke Conference 2016.

Disclosure

The authors report no conflicts of interest in this work.


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