This descriptive-analytical was conducted in 2014, and has ethical approval (ajums.REC.1393.362) from Jundishapur University of Ahvaz. The study population consisted of 150 adolescents with thalassemia aging 13 to 18 years old who were referred to the hemoglobinopathy ward of Shafa hospital to receive blood. Four patients were excluded due to lack of consent. Since all patients referred to the hospital were included through census during the study, there were no available replacements for these four patients, and also no statistical formula. Thus, 146 patients were examined, all of whom have medical records on file. The inclusion criteria were a lack of mental illnesses, being able to read and write, and lack of any impairment or chronic disease other than thalassemia. The study exclusion criteria included an unwillingness to cooperate in completing the questionnaire.
In this study, the hemoglobinopathy ward of Shafa hospital was selected as the study environment to allow access to the appropriate number of patients, and because this hospital is the only center in the area for thalassemia referrals. Shafa hospital is a specialized, educational, referral, and governmental hospital, with a total of 140 beds. The hemoglobinopathy ward has 20 beds and services. The hospital has specialized clinics in adult and pediatric hematology, thalassemia, internal medicine, counseling, genetics, and nutrition. Also, this hospital has admitting wards and started sections.
After explaining the goals of the study to each participant, and explaining that participation was optional and assuring them about confidentiality of the collected data, we asked each participant to read and sign the informed consent form Also, the participants were given the right to withdraw from the study without charge or penalty. First, the questionnaire gathered information on several demographic variables (age, sex, education level, father’s education, mother’s education, family size, and number of blood transfusions). The researcher then distributed the Onyx and Bullen questionnaire on social capital and the Piers Harris children’s self concept scale among the teenagers in different shifts, and the patients answered both questionnaires in the presence of the researcher. If the patient was unable to answer, the researcher completed the questionnaire, and all samples were studied. So, there was no bias.
The Piers Harris children’s self concept scale is used to measure self-concept in children and adolescents age 7 to 18 years old, and includes 80 questions with two options (yes or no) intended to generate a personal report about how children feel about themselves. Scores range between 0 and 80. The scale includes six aspects: 1) behavior; 2) school status and cognitive and mental condition; 3) appearance and physical characteristics; 4) anxiety; 5) popularity; and 6) joy and satisfaction. A score of less than 40 indicates negative self-concept, a score between 40 and 60 shows an average self-concept, and scores higher than 60 indicate a positive self-concept. As the self-concept questionnaire is standard and is widely used in various studies, including Slamani (2003) and Branklin (1981), its validity is approved. The validity reported by Alaei (2010) is 90.12, which that is acceptable. The reliability of the tool is reported by Tailor (1977) to be 0.90, Branklin (1981) places it at 0.92, and Alaei (2010) at 0.89 (
12). In this study, the reliability of the questionnaire was obtained by Cronbach’s alpha, an acceptable 0.87.
The Onyx-Bullen social capital questionnaire (2000) includes 31 questions in seven dimensions: 1) valuing life; 2) social trust; 3) relationship with neighbors; 4) connection with friends and family; 5) participation in local groups; 6) pioneering in social fields; and 7) capacity to accept differences. The questions use a five-point Likert scale (very low, low, average, high, and very high) which is answered from 1 to 5. The highest score for the questionnaire is 155 and the lowest is 31. A score less than 77.5 shows low social capital, between 77.5 and 116.25 is average, and scores higher than 116.25 show good social capital.
According to Rajabi Guilani, the validity and reliability of the social capital questionnaire has been evaluated by Onyx and Bullen (2000). This study reported a correlation coefficient between 0.52 and 0.87 and a reliability coefficient of 0.84. The reliability of the questionnaire was done in the study by Rajabi et al. in 2013, in which the cognitive aspect had an acceptable reliability of 0.84: structural 0.79 and communication 0.77 (
21). According to Bagheri Yazdi, the two-variable correlation coefficient among constituting elements of the social capital questionnaire was between 0.176 and 0.505. Thus, each component of the measure in the questionnaire is a predictor for social capital. The structural validity was 0.809, which is significant. Its reliability was 0.904, which is acceptable (
22).
In the present study, the reliability of this questionnaire based on Cronbach’s alpha was 0.86. The content validity was determined in the form of a questionnaire to the 10 members of the faculty, who examined the clarity and simplicity of the questions. The determination method used in this study, descriptive statistics (frequency, percent, mean, std.deviation), was used to analyze the dimensions of social capital and self-concept, and the results are shown in the tables as frequency and percentage. A Pearson correlation test was used to examine the relationship between social capital and self-concept and its dimensions. Data was analyzed by SPSS version 22. Thus, P < 0.05 was considered as significant.