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Quality of life of patients with thalassaemia living in the West Bank and Gaza

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Pamela Kohlbry,1 Bashar al-Karmi2 and Robert Yamashita3

1School of Nursing, California State University San Marcos, San Marcos, CA, United States of America. 2Thalassemia Patients Friends Society, Ramalla, West Bank, Palestine. 3California State Universit y San Marcos, San Marcos, CA, United States of America. Correspondence to Pamela Kohlbry: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Abstract

Background: In countries with low resources, the health and quality of life of people with thalassaemia can be severely affected.

Aims: This study examined the health-related quality of life of people with thalassaemia in the West Bank and Gaza, Palestine.

Methods: This was a cross-sectional study of a convenience sample of 104 patients (71 adults and 33 children) with thalassaemia and their families conducted in 2015 in the West Bank and Gaza. Participants were surveyed using the 36-item Short Form Health Survey, version 2 (SF36v2), Pediatric Quality of Life InventoryTM (PedsQL) and PedsQL Family Impact Module to assess their quality of life. With the SF36v2, we used normed-based scoring. For the PedsQL and Family Impact Module, we used the 0–100 scoring. Scores are reported as means and standard deviations and P < 0.05 considered statistically significant.

Results: Scores were low across all domains indicating poor quality of life. For bodily pain in the SF36v2, a significant difference was seen between the West Bank and Gaza. No significant differences were found between males and females. Data from the PedsQL showed no significant differences between the West Bank and Gaza. With the Family Impact Module, the summary score was higher in adults than in the paediatric patients. Compared with other countries, thalassaemia patients in Palestine generally had lower quality of life scores in most domains.

Conclusion: The lack of access to health care and blood transfusions and geopolitical challenges may explain the low quality of life scores of patients with thalassaemia in Palestine.

Keywords: thalassaemia; quality of life; cross-sectional study; West Bank and Gaza.

Citation: Kohlbry P; al-Karmi B; Yamashita R. Quality of life of patients with thalassaemia living in the West Bank and Gaza. East Mediterr Health J. 2023;29(6):xxx–xxx. https://doi.org/10.26719/emhj.23.045

Received: 20/04/22 ; accepted: 21/11/22

Copyright: © Authors; licensee World Health Organization. EMHJ is an open access journal. All papers published in EMHJ are available under the Creative Commons Attribution Non-Commercial ShareAlike 3.0 IGO licence (CC BY-NC-SA 3.0 IGO; https://creativecommons.org/licenses/by-nc-sa/3.0/igo). 

Introduction

Worldwide, genetic haemoglobinopathies such as thalassaemia are considered serious health burdens. In the United States of America, thalassaemia is rare and considered a disease of migration and it is managed as a chronic illness (1,2). However, in countries with fewer resources, the health burden of thalassaemia patients, which will also be a family burden, affects health-related quality of life (3,4). Thalassaemia is common in the Mediterranean, Middle East and sub-Saharan Africa (5). The prevalence of thalassaemia in Palestine which includes the Occupied West Bank and Gaza, is high; about 4% of the population are carriers (4). The political conflict and often violent conditions in Palestine complicate medical care of patients and their families who need to make regular clinic visits. Blood supply for transfusions is limited and chelation medication treatments are expensive or unavailable. Furthermore, continuity of care is lacking, social and psychological support services are limited, and there are few health care workers with specialized training in the management of thalassaemia. The World Health Organization (WHO) lists Palestine as having the second-lowest health expenditure as a percentage of the Gross National Product out of 18 Middle Eastern countries (6).

The quality of life and outcomes of people with thalassaemia vary depending on clinical care and other circumstances. In Palestine, thalassaemia patient-reported health outcomes are poorly understood, and clinical research data are limited (7–10).

Research that measures quality of life can help identify the effect of chronic illness on patients’ lives and allows comparison of different groups (11).

This study aimed to identify the quality of life of people with thalassaemia in the West Bank and Gaza. In 2009, we conducted a pilot study on the quality of life of patients with thalassaemia in Palestine (12). The study was designed to answer the question: could behavioural and social science research data be systematically collected in contested regions, classified by WHO as a low-income country? Our study in 2015 is a follow-up to that pilot. During the time of this study, regional conflict was a challenge to conducting this research (13,14). This study also compares Palestinian data with other populations such as Turkey, Thailand, Italy, Greece and Middle Eastern countries.

Methods

Sample, instruments and data collection

Both the 2009 and 2015 studies were cross-sectional studies using a convenience sample recruited from regional clinics in Palestine. In 2009, only adults were part of the sample. In 2015 we expanded the sample to include children and their guardians. Data were collected on demographic characteristics of the sample. In addition, three standardized quality of life tools were used: the 36-item Short Form Health Survey, version 2 (SF36v2), Pediatric Quality of Life InventoryTM (PedsQL) and PedsQL Family Impact Module (FIM).

Patients with thalassaemia and guardians of patients with thalassaemia who attended a transfusion clinic were approached about the study. If they were interested in joining the study, they were provided with information and an informed consent form to sign. If they chose to participate and signed the consent form, they were given the surveys to complete.

The instruments used in the study measured a patient’s quality of life and the impact the patient had on their family. The widely used SF36v2 instrument measures quality of life for young adults (ages ≥ 16 years) and older patients (15). The 36-item questionnaire measures eight dimensions of general health-related quality of life: physical functioning, role physical (limitation because of physical health problems), bodily pain, general health, vitality, social functioning, role emotional (limitations due to emotional problems), and general mental health. In addition, two summary scores assess physical and mental dimensions of health and well-being: physical component summary score and the mental component summary score. A high score indicates a more favourable health state. The instrument has been used extensively in clinical trials and academic studies, across disease areas, including thalassaemia. Its validity and reliability to measure health-related functional status and well-being have been established (15). It has a high level of consistency across countries and the Arabic translation has been validated (16).

The PedsQL 4.0 generic core scales contain 23 items grouped into four scales: physical functioning, emotional functioning, social functioning and school functioning. It also includes composite scales for a total scale score (23 items) and a psychosocial health summary score which is the sum of emotional, social, and study/work functioning. A high score indicates a more favourable health state (17–19). All paediatric patients and their caregivers were surveyed using the PedsQL.

The FIM survey has 36 items and measures the effect of chronic paediatric health conditions on parents and the family. The survey measure six scales of parent self-reported functioning: physical functioning, emotional functioning, social functioning, cognitive functioning, communication and worry. It also measures two scales for parent-reported family functioning: daily activities and family relationships (20).

In 2009 we used the SF36v2. In 2015, we assessed paediatric health-related quality of life using the PedsQL. In addition, because of the chronic nature of transfusion-dependent thalassaemia, we used the PedsQL FIM to assess the impact the disease had on caregivers.

Statistical analysis

The SF36v2 manual provides a standardized approach for statistically analysing the data. It allows for a systematic approach for converting the individual data points into a meaningful component for a scale. The initial step converts the score into a 0–100 range with 0 (worst health) to 100 (best health) results. The SF36v2 designers recognized that the component nature of the scales and what they intended to measure were widely variable; the range between top and bottom scores varied substantially across health domains. Without understanding this, the data could be easily misinterpreted. Therefore, in order to simplify interpretation and make direct comparisons, a norm-based scoring approach can be used with the SF36v2, where each scale has the same average (50) and same standard deviation (SD) (11). This approach makes the health impact of a domain norm-based scoring score clearer and can more accurately reflect the impact of the disease. An individual score of < 45 or a group score of < 47 indicates that quality of life is severely affected. Norm-based scoring requires the assessment of a general population, and because SF36v2 was developed in the United States (US), it uses the US population as its norm.

The PedsQL and the FIM were also scored using the 0–100 scale. For comparisons across studies, the P values were used for all instruments. P less than 0.05 was considered statistically significant.

Ethics

The study was approved by the Institutional Review Board Committee of the California State University San Marcos and the ethics review and administrative authority of the clinics where the participants were drawn. Support to conduct the study and obtain participants was provided by the Thalassemia Patients Friends Society. The Thalassemia Patient’s Friends Society is a non-profit Palestinian nongovernmental organization working to build patient capacity to manage health, economic and social aspects to improve their quality of life (21,22). All patients who visited clinics at the time of the study were invited to participate voluntarily. Patients were excluded only if they chose not to participate.

Results

Characteristics of the sample

At the time of the 2015 study, there were 750 people with thalassaemia and their families in the West Bank and Gaza. Of these people, 104 participated in the study: 65 from the West Bank and 39 from Gaza. Our sample size was adequate compared with other published studies on thalassaemia. Seventy-one participants completed the SF36v2, and 33 paediatric participants completed the PedsQL (Table 1). The participants were distributed fairly equally by sex: 51 males and 52 females overall (data on sex were missing for one person). The age range was < 10 years to ≥ 30 years; most were between 15 and 24 years. Of the 33 participants who completed the PedsQL, 19 were from Gaza and 14 from the West Bank.

SF36v2 results

In the 2015, 71 participants completed the SF36v2 (Table 2). Most participants were from the West Bank, 46 compared with 25 from Gaza. SF36v2 scores were poor for physical functioning and mental health. The physical health component scores showed a statistically significant difference between Gaza (40.53) and the West Bank (39.49). However, the mental health component scores showed no statistical differences, but Gaza patient scores were lower than the West Bank. Gaza scored lower in most domains than the West Bank with the lowest in the mental health component score (31.45). Male and female scores were low in most areas with females scoring lower for bodily pain (34.52), social function (33.67), mental health (33.29) and mental health component score (32.46). The only significant difference in scores in the various domains was between Gaza and West Bank for bodily pain; no significant difference was seen between the sexes. Male participants in the West Bank scored significantly lower for bodily pain compared with male and female participants in Gaza. In the analysis by location and sex, the lowest scores were in the mental component summary.

PedsQL results

Of the 33 participants who completed the PedsQL, 19 were from Gaza and 14 from the West Bank (Table 3). Scores in Gaza were consistently lower than the West Bank scores across all domains. However, these differences were not statistically significant. Most (61%) of the participants were female. In the child self-report, females generally scored lower than males, except for school functioning. The lowest score for females was for physical functioning (54.06). The differences between males and females were not significant. The age range was < 10 (27%), 10–14 years (36%) and ≥ 15 years (36%). The oldest age group scored the lowest for all domains. Parents scored children 10–14 years the highest, except for school functioning where parents scored both younger and older age groups higher (Table 3).

FIM results

In the Family Impact Module scoring, the 104 participants who completed the survey scored lowest in physical functioning and emotional functioning (Table 4). Overall, males had lower scores than females. Parents perceived that younger children were harder to understand when they communicated on their health care. However, as the children got older, the scores generally increased indicating that overall the families seem to have adapted to thalassaemia health care needs.

Discussion

PedsQL comparison

In comparison with studies using the PedsQL in Turkey, in Middle-Eastern patients in Italy and in Thailand, the Palestinian scores were consistently lower across all domains (Table 5) (23–25). The PedsQL scores were significantly higher in Turkey and Thailand in the domains of emotional functioning, social functioning, psychosocial health summary score and overall functioning (23,24). Scores in Thailand were also significantly higher for physical functioning (24). The scores in Italy were not significantly different from our Palestinian scores (25). These statistically significant lower findings may reflect environmental challenges related to lack of resources. Data collection for our study was during a period of substantial upheaval and conflict in Palestine.

FIM comparison

The FIM results demonstrate that Palestinian parents are affected similarly compared with studies in other areas (Table 6). Palestinian parents appeared to have poorer quality of life on the parental quality of life measures compared with other studies, but the differences were not statistically significant. With the family quality of life, Palestinian families appear to be doing better in the overall domain, although again no significant differences were found except in the domain of daily activities (26). The effect on the family of having a child with thalassaemia was similar across studies (Table 6).

SF36v2 comparison

In our statistical analysis comparisons, many Middle Eastern studies that used the SF36v2 only report their 0–100 results. Most do not report the scale range (bottom to top). While potentially useful for understanding internal differences between patients, the lack of data on a standardized general population limited what these studies in the Middle East could report. Because the research studies we used for comparison only published 0–100 scores and not norm-based scoring, it was difficult to interpret the significance of differences in scoring.

Palestinian SF36v2 scores were generally lower across all domains (Table 7), except compared with older Italian patients with thalassaemia in a 2008 study in Milan where Palestinian thalassaemia patients scored better for social functioning and role emotional (27). Because the Italian study did not report standard deviations, we do not know whether this difference was statistically significant. Compared with the results of another Italian study in 2008, the only significant difference with our results was for bodily pain, with Palestinian patients having lower scores (28). Compared with the results of a 2021 Italian study, Palestinians in our study had significantly lower scores than Italian patients for lower bodily pain, general health, vitality and social functioning (29). Because these data are not norm-based scores, we do not know if any of the scores are clinically significant.

The 2012 European Evaluation of Patients’ Iron Chelation (EPIC ) trial on the oral chelator deferasirox only reported 0–100 scores for each SF36v2 domain and graphically showed score ranges (15). The study did however report the physical component summary and mental component summary scores (and SDs) which requires norm-based scores for each domain. Both summary scales show that thalassaemia patients in the EPIC study had significantly better overall quality of life than patients in Palestine. It is important to note that EPIC patients were generally from high-income countries or from established clinics with access to adequate resources.

It is theoretically possible to convert published 0–100 data to norm-based scoring. However, because we lacked necessary information such as maximum and minimum scores, any such conversion will not accurately reflect the data set and remains strictly theoretical (see the difference in reported and calculated scores for the mental health component and physical health component in the 2012 EPIC trial (15). This exercise however can give us an “eyeball test” of the clinical effect of thalassaemia on quality of life. We used the SF36v2 recommended norm-based scoring score of < 47 as being below average for the general population and suggesting clinical significance. As shown in the theoretical comparisons in Table 7, Palestinian patients had scores < 47 in all domains, suggesting poor quality of life of clinical significance. The data also show that even in high-income countries where patients have access to more health care resources, the psychosocial health of thalassaemia patients is severely affected (scores < 47 for mental health component, social functioning, role emotional and mental health). With the exception of the 2008 studies in Italy (27,28), thalassaemia also affects the physical heath component score, with lower scores for role physical and general health. A 2021 study in Greece shows the effect of new oral chelators on quality of life with improved mental health scores (29), while the Italian data (29) show improved social functioning scores.

The SF36v2 norm-based scoring scores suggests that, while Palestinian psychosocial scores are low, they are also low for thalassaemia patients in other countries. This suggests that the disease’s pathophysiology and needed clinical interventions create a level of patient concern that affect their health outcomes. On the physical health side, the lower physical functioning and higher bodily pain reported by Palestinian patients are troubling. How a patient reports physical functioning could be associated with access to blood transfusions, because higher haemoglobin levels from transfusion have an immediate response. Everywhere, patients with access to health care resources report greater physical functioning and less bodily pain. The low bodily pain scores suggest that Palestinian patients are under-transfused. Within the context of conflict areas, restricted access to blood transfusion is not surprising and would lead to lower patient quality of life scores in all domains.

Our study has some limitations. We used a convenience sample, time to gather the data was limitedand supporting clinical data were lacking. Several barriers were noted such as difficulty for participants to reach clinic sites, and lack of funding. There are also challenges associated with gathering paediatric patient data because most quality of life assessments are conducted through a parental caregiver proxy. The study instruments used are not specific to thalassaemia which is a potential limitation as particular nuances of the disease could be missed.

Conclusion

Our study shows that research can be conducted in areas of conflict with active collaboration between research groups. The results could help health care professionals plan ways to support access to care for people with chronic illness and hence improve quality of life.

Our data suggest that the low quality of life scores could be associated with patients’ haemoglobin levels which are below the international recommendations (4). The low Palestinian quality of life physical measures are most likely related to low transfusion levels at clinic visits.

Systematic research to collect quality of life data as well as clinical data, including patient outcomes, haemoglobin and iron levels, and complications from treatment, is suggested to strengthen our findings. Research on the geographical distribution of health care under conflict conditions would be enlightening (31,32).

While the patient physical functioning score and physical component summary score were better in 2015 than 2009, the sores in other domains were worse. This may reflect a decline in the Palestine–Israel situation in 2015 and increased conflict, leaving thalassaemia patients having to cope with their disease and limited access to health care under occupation. 

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