3.1. Study Design
A randomized clinical trial was conducted on patients with MS who had been referred to the multiple sclerosis society of Markazi province, Iran, in 2016. The society is a non-governmental organization located in Arak city. It helps patients with medication cost, rehabilitation equipment, free education, and laboratory services.
3.2. Sampling
In total, 50 patients with MS who were referred to the MS Society and met the inclusion criteria were selected, and each of them were assigned a code. Then, using simple randomization (the drawing method), patients were assigned to one of 2 groups, intervention or control. The sample size was calculated based on the following formula used in a previous study (16). Finally, 25 subjects were assigned to each group.
S1 = 18.2, S2 = 17.7, µ1 - µ2 = 14.5, α = 0.05, β = 0.2
Equation 1.
Patients who met the following inclusion criteria were eligible for participation in the study: 20 to 65 years of age, educational level of primary school or higher, Arak city residence, ability and willingness to cooperate with the study, signing the informed consent form, member of the Multiple Sclerosis society of Markazi province, experiencing MS symptoms, wheelchair independence, not experiencing the chronic phase of the disease, zero attacks within the last 3 to 6 months, balanced clinical status, expanded disability status scale (EDSS) score > 6, and diagnosed with relapsing and remitting MS.
Additionally, the following exclusion criteria were considered: lack of cooperation, lack of interest in continuing with the program, and death.
Thus, 10 patients were excluded because they did not meet the inclusion criteria, and no patients dropped out during the study (Figure 1).
Figure 1.
Study Procedure
3.3. Data Collection
To collect data, a questionnaire consisting of 2 parts was used. The first part asked questions about a patient’s demographics, such as age, gender, marital status, educational level, occupation, smoking status, disease symptoms, duration of MS, history of using rehabilitative services (physiotherapy, occupational therapy, and speech therapy), and medication. The second part was the personal resource questionnaire (PRQ), which relies on the personal beliefs of the patient regarding their social adaptability. The PRQ was first developed by Brant and Weinert in the 1970s, and it has undergone changes over time. The PRQ-2000 is the latest version, and it includes 15 items scored on a 7-point Likert scale. Its total score ranges from 15 to 105, with higher scores indicating a higher level of social adaptability. The PRQ, a self-administered questionnaire, is easy for patients to understand and answer within approximately 15 minutes. Studies have confirmed the validity and reliability of the PRQ and have confirmed an internal consistency between 0.87 and 0.93 (17, 18). Additionally, its divergent validity was compared with that of the center for epidemiological studies depression (CES-D) Scale and its correlation was -0.44 (17, 18).
In this study, the PRQ was translated into Farsi and its psychometric characteristics were assessed.
After the translation process, to assess the content validity, the content validity ratio (CVR) and content validity index (CVI) were calculated.
- The CVR was determined through 10 experts’ judgment, and based on Lawshe’s table, items with a score of 0.62 or higher were considered acceptable. The calculated score for all items was > 0.8.
- The CVI was determined by 10 experts using the four-point scale described by Waltz and Bausell. The calculated score was 94.0.
Then, to assess the reliability, internal consistency and test retest methods were considered.
- The internal consistency of the PRQ was assessed using the Cronbach’s alpha on data collected from 15 patients. The Cronbach’s alpha was 0.78 in the present study.
- For the test retest method, 10 patients completed the PRQ twice, at an interval of one week. The correlation between the two measurements was 0.8.
3.4. Intervention
First, participants in the intervention group were asked to report their availability, and then, their face-to-face education sessions were scheduled accordingly. Sessions were conducted by the researcher in a room at the MS Society. The compiled self-care education program was conducted individually for each participant, based on the educational goals. The program consisted of 5 weekly face-to-face education sessions, and each session was about 45 minutes long (total duration: 5 weeks) (Box 1). The educational content was composed of text reviews and was confirmed by the experts. Educational pamphlets were also used along with the verbal education. Participants of both groups completed the PRQ thrice, prior to the intervention, and 1 and 4 weeks after the intervention (or after the first assessment for the control group).
Box 1.
The Content of the Educational Program
Sessions | Content |
---|
1 | Introduction, familiarization with the study |
Learning about self-care |
2 | Familiarization with the disease and its symptoms |
Talking about the patient’s problems (need assessment) |
3 | Answering the patient’s questions |
Self-care education regarding fatigue and imbalance problems (improvement methods and related exercises) |
4 | Answering the patient’s questions |
Self-care education about muscular spasm and weakness (improvement methods and related exercises) |
5 | Answering the patient’s questions |
Self-care education regarding elimination problems (improvement methods and related exercises) |
3.5. Statistical Analysis
Data were analyzed using descriptive statistics and measures of central tendency, and the Chi-square, independent t, Fisher’s exact test, and repeated measures analysis of variance (ANOVA). All analyses were conducted using SPSS version 21, and a P value of < 0.05 was considered significant.
The normality of distribution was checked for all quantitative variables, and parametric tests were performed for normally distributed variables, while non-parametric tests were used for non-normal variables. In the present study only the duration of disease was non-normal, which was analyzed using the Mann Whitney test.
The repeated measures assumption was checked, and normality and randomness was established. The Mauchly’s test showed that sphericity could not be assumed. Therefore, the Greenhouse-Geisser correction was used to perform the test for the three different assessment points.
3.6. Ethical Considerations
All participants were informed about the aim of the study, were assured about the confidentiality of study data, and signed the written informed consent prior to enrollment. The protocol of this clinical trial was approved by the ethics committee of Arak University of Medical Sciences (Ir.arakmu.rec.1394.81). The study was registered in the Iranian registry for clinical trials (registration code: IRCT2015100224290N1).
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