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*Corresponding Author: Ubong Ekpene, Department of Surgery, University of Uyo, Uyo, Nigeria.
Citation: UU. Ekpene, M Ametefe, P Bankah, G Wepeba, H Akoto, J Boatey, M Iddrissu, T Dakurah. (2021) Physicians’ knowledge, attitude, practice and perceived barriers to subject recruitment for randomized controlled trials in ghana.. Clinical Research and Clinical Trials. 4(1); DOI: 10.31579/2693-4779/045
Copyright: © 2021 Ubong Ekpene, This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Received: 13 May 2021 | Accepted: 04 June 2021 | Published: 05 July 2021
Keywords: subject recruitment; randomized controlled trials; ghanaian physicians
Objectives: This study assesses the knowledge, attitude, practice and perceived barriers to subject recruitment into randomized controlled trials, and determine strategies to maximize subject recruitment and retention.
Methods: A cross sectional, quantitative survey of 73 physicians working in Ghana was conducted assessing their knowledge and attitude towards randomized controlled trials, subject recruitment practices, self-reported barriers to subject recruitment and strategies to enhance subject recruitment.
Results: Responses from 73 Ghanaian physicians were analyzed. 23 (31.5%) respondents knew of ongoing clinical trials in their specialty in Ghana while 32 (43.8%) physicians knew about trials in their specialties in various places in the world. 23 (31.5%) physicians responded that they had referred patients for recruitment into clinical trials before. 49 (67.1%) respondents had never referred any patient for recruitment into clinical trials.
Conclusion: Most Ghanaian doctors are unaware of ongoing trials in their specialty and thus do not refer patients for recruitment.
Randomized Controlled Trials (RCTs) is a study design in which subjects are randomly assigned an intervention, with or without study participants and/or investigator(s) being blinded to the intervention, with the aim of determining whether there exists a cause-effect relationship between intervention and outcome. It can also help to determine the superiority, equivalence or inferiority between two interventions. RCT is the most rigorous way of determining the size of difference in pre-defined outcomes between intervention groups [1]. Despite its usefulness, healthcare situations exist where using this study design is inappropriate due to practical and ethical reasons [2]. For instance, for very rare disease conditions where subject recruitment will be a challenge, case reports and case control studies may be the only available source of evidence.
The concept of Randomized Controlled Trials is not new in Africa as some key research projects, particularly into communicable diseases like Malaria, Tuberculosis, Leprosy, Human Immunodeficiency Virus infection etc, have been conducted in Africa, mostly through Non-Governmental Organizations (NGOs) and WHO sponsored programmes. However, sub-Saharan Africa is still grossly under-represented in the global distribution of clinical trial sites, which should not be the case. This is because Africa has a large ‘treatment’- naive population with high incidence rates of diseases e.g. colorectal cancer, who present late with advanced stages of the disease.
ClinicalTrials.gov [3] currently lists 342,900 studies located in 216 countries, the whole of Africa accounting for 2.97% (i.e. 10,201 of 342,900) of all the studies, the bulk of which is in South Africa (27.3%) and Egypt (41.8%). Ghana currently accounts for 177 of 10,201 (1.7%) as against 103 of 4408 (2.34%) in 2015 [4]. Factors postulated as being responsible for this, as in other African countries include: poor infrastructure, underdeveloped health systems [5]. Poverty, illiteracy, cultural practices and beliefs which gender distrust, insufficient trained personnel in clinical trial conduct, as well as absence of sufficiently rigorous regulation to protect study subject [6]. Other barriers include time constraint on the part of the physician and difficulties including identified eligible patients [7].
Subject recruitment into clinical trials is crucial to the successful conduct of any clinical trial. However, subject recruitment has remained a challenge worldwide, with recruitment being slow and failing to meet recruitment goals in time [8]. Different figures have been quoted by various studies. One study estimates that 85% of trials fail to conclude on schedule due to low participant accrual, 60% to 80% of clinical trials in the United States do not meet their temporal endpoint due to recruitment challenges, and 30% of trial sites fail to recruit even a single participant [9]. Other studies opine that less than a third [10] and estimated 80% of clinical trials fail to meet their recruitment timelines [11]. Low enrolment can result in a trial being abandoned [12]. A costly outcome that can harm the credibility of individual investigators and their institutions [13].
Physicians are involved in RCT either as investigators or refer patients for recruitment. Therefore, their awareness of ongoing clinical trials and the right attitude towards their patients’ participation can determine their willingness to enrol or refer their patients to participate in clinical trial. In sub Saharan Africa where there is low level of literacy among patients, physicians serve as adviser to patients in matters relating to their health, and thus can influence patients’ decision in trial participation. There are several studies that have focused on physicians’ knowledge, attitude and practices that relate to specific disease entities in Ghana, but none that assesses the role of physicians in clinical trial recruitment as it relates to their knowledge, attitude and practices. This study proposes to identify the knowledge and attitude of physicians practicing in Ghana towards clinical trials and how this affects subject recruitments into clinical trials in Ghana. Based on findings, appropriate recommendations will be made that can guide stakeholders in appropriate policy formulation with regards to clinical trials.
This study is a Cross-sectional quantitative survey of selected medical doctors practicing in Ghana during the study period. The sampling method was non-probability purposive method, targeting practicing physicians in various specialties in Korle Bu Teaching Hospital. The limitation with this sampling method is that it is impossible to know how well the sample population is representative of the general population compared to a probability sampling method. Sample size was calculated to be 73.
All of the respondents were medical doctors working in Korle Bu Teaching Hospital, Accra, Ghana. Korle Bu Teaching Hospital is the foremost teaching hospital in Ghana, with a bed capacity of 2000 [14]. There are over 700 medical doctors of different cadre and specialty working there, constituting about 20% of the country’s physician population.
Most of the doctors there came from district hospitals in all the regions in Ghana and were undergoing specialist training in various specialties. They later return to their various primary hospitals after the required training. Thus, the physician population here approximately reflects a cross section of physicians in Ghana.
Online survey was utilized. Data was collected using semi-structured, self-administered, anonymous questionnaires . Survey monkey was used to administer the online survey and reminders sent to improve response rate. The survey period was between July 2015 and November 2015.
The physicians’ e-mail addresses were obtained from the hospital’s personnel record office after obtaining permission from the medical directorate of the hospital. Questionnaires were sent to all the contacts obtained. The first 10 respondents were used to pilot the study and pre-test the questionnaire for acceptability, validity etc. Those respondents who participated in the pilot survey were not invited for the main survey. For the main survey, the first 73 respondents were included in the study. Reminder e-mails were sent to participants after 1, 2, 3 and 4 weeks to increase response rate.
Three hundred and fifty physicians’ contacts were accessible and these were invited to participate in the survey. Eighty-four responded, giving a response rate of 24%.
Each participant was provided with participant information sheet on the front page of the questionnaire, explaining the study aim, assurance given on confidentiality and contact information provided for correspondence if the need arises. A section detailing the consent process was also provided on the front page of the questionnaire.
The questionnaire had 26 questions distributed within a patient information sheet/consent and 4 sections. Section 1 was on participants’ personal demographics and professional characteristics and had five questions bordering on sex, age, cadre and specialty. Date and time of response were also required.
Section 2 had seven questions on the physicians’ Knowledge about RCTs in their specialty within and outside Ghana, including the clinical trial registry (clinicaltrial.gov). Section 3 had five questions on physicians’ attitude towards RCTs in terms of its scientific benefit in furthering medical knowledge as well as its impact on the respondents’ medical practice.
Section 4 had eight questions on physicians’ participation in subject recruitment into clinical trials, perceived barriers to widespread clinical trial conduct in Ghana, as well as suggestions on ways of mitigating these problems
Data were summarized using percentages, tables and charts, and analysed with SPSS version 21. Pearson Chi-square test and Fisher’s Exact Test were used to find out the strength of association between variables. The independent variable being physicians’ level of training (cadre) and the dependent variables her/his subject recruitment practice. The null hypothesis was that there is no difference in subject recruitment practice amongst the physicians based on their cadre. The level of significance is at p-value of ≤ 0.05.
A total of 350 physicians in Korle Bu Teaching Hospital whose e-mail addresses could be accessed from the hospital records were invited to the survey. 82 responded to the survey giving a low response rate of 23.4%. 73 of this number were considered for analysis based on the completeness of their responses.
53(72.6%) were males and 20(27.4%) were females (Table 1)
Age distribution (Table 2) showed a modal age range of 31-40 years (50.7%), followed by ages 21-30 years (27.4%). The age range with the least number was 51-60 years (2.7%). The mean age was 35 years (SD 7.5)
The respondents included 4 (5.5%) interns, 11 (15.1%) medical officers, 23(31.5%) resident doctors, 19 (26%) senior resident doctors and 16 (21.9%) consultants (Figure 1).
The distribution of the area of specialization of respondents is described in Figure 2. Of the 73 respondents 20 (27.4%) were from general surgery, 14 (19.2%) from Anaesthesia and 11 (15.1%) from Neurosurgery. These three specialties topped the list of respondents making up 61.7%.
To test for association between the physicians’ subject recruitment practice and their cadre, a Pearson Chi-square test was done as shown in Tables 4 and 5. The null hypothesis was that there is no difference in the physicians’ subject recruitment practice across the various cadre. P-value of ≤ 0.05 was taken as statistically significant. Pearson Chi-square value of 7.294 (p = 0.121) was not statistically significant. The Fisher’s Exact Test with value of 7.068 (p = 0.115) was also not statistically significant. Therefore, the null hypothesis failed to be rejected.
Respondents gave several barriers to subject recruitments into clinical trials in Ghana as enumerated below in respondents’ own words with minimal grammatical corrections.
1. Physicians’ lack of knowledge of ongoing trials, ethical concerns and patients’ sociocultural factors.
2. Ignorance and illiteracy
3. Few trials going on and not many clinicians are involved
4. Lack of adequate information to address and allay fears of the public and participants
5. The guinea pig perception, the population isn't well oriented, poor communication on the part of investigators, unacceptable incentives.
6. Lack of technical expertise.
7. Lack of resources and funds
8. Perceived to be non-beneficial to the subjects.
9. Lack of research grants and resources
10. Lack of education of the populace concerning the benefits of clinical trials.
11. Lack of publicity of trials.
12. Fear of adverse reactions
13. Distance, when patients have to pay out of pocket for their care.
14. Apathy on the part of clinicians towards involving younger clinicians in their research.
15. Patients not willing to be part of studies.
16. Increased work load including paperwork, time consuming
17. Loss to follow up due to economic hardship and literacy level.
18. Lack of insight into the benefits of clinical trials for humanity and the progress of medicine.
The respondents suggested strategies that can enhance subject recruitment and retention in Ghana as listed below.
1. Public sensitization and formal training of clinicians on clinical trials.
2. Making doctors and other health workers who are not in a particular field aware of upcoming trials so that they may be able to refer their patients who may be willing to be subjects of the trial will help in a way.
3. Proper education of the general public on the importance of evidence-based medicine and the role of clinical trials.
4. Seek for major funds for trials
5. Increased commitment on the part of investigators to be professional, truthful and uphold guiding ethics of clinical research.
6. Periodic dissemination of information of ongoing RCTs and requests for more recruits.
7. Attractive incentives to patients like waivers for fees and medications
8. Incentives to physicians for extra workload.
9. Published results of ongoing trials should be made available to physicians and the general public to encourage interest for participation.
10. Reduction of paperwork burden.
Randomized controlled trial is the gold standard of clinical research. One of its challenges is the issue of recruitment of subjects into the study. Several factors have been reported as being responsible for this. These factors can be stratified into investigator-related, patient-related, institution-related and protocol-related factors.
Patient-related factors include: low literacy levels [15], cultural beliefs [16], and mistrust of research and suspicion of experimentation [17]. Institutional factors include: erratic health care utilization [18]. Poor infrastructure and insufficiently rigorous regulation.
Investigator-related barriers which can hinder patient recruitment and retention could be logistic or personnel factors [19]. A common one is the failure to integrate the role as a healthcare giver and investigator, and failure to anticipate the required work load [20]. Other barriers include competing demands with lack of time and resources [21, 22] inadequate experience with trial conduct and poor motivation of investigators. Also noted as an important barrier is gate keeping by Clinical Staff Members who believe they are protecting patients from research procedures they perceive as burdensome or undesirable 22 and skepticism about the usefulness of the research interventions [23].
Protocol-related barriers vary from lengthy trial periods to over burdensome visit schedule requiring a significant degree of change in the participants’ routine activities [24] and restrictive eligibility criteria [25].
Physicians are either involved as investigators or refer their patients for recruitment into studies.
Physicians’ involvement in the recruitment of subjects into clinical trials is crucial especially in sub-Saharan Africa where the patients tend to rely a lot on their physicians for information about their health. This is due to the large number of illiterate clients. Even the educated patients greatly esteem their doctors’ opinion about their health concerns. It may thus be reasonable to infer that the success of clinical trials in sub-Saharan Africa is hinged on the greater awareness of physicians of the concept of clinical trials and their role in subject recruitment.
All the physicians involved in this survey had heard about randomized controlled trials and some (27.4%) were aware of the clinical trial registry- ClinicalTrial.gov. However, majority of the physicians were neither aware of ongoing trials in their specialty anywhere in the world (56.2%) nor of ongoing trials in Ghana (68.5%). Also, only 21.9% of them have had a formal training in randomized controlled trials. This low level of knowledge is reflected in the low participation of physicians in Ghana in clinical trials, with only 27.4% having been involved in the conduct of RCTs before.
All the respondents accepted that clinical trials are beneficial and further scientific knowledge, and this is evident in the willingness of 98.6% of them to refer their patients for recruitment if they are aware of an ongoing trial relevant to their patients’ illness. What is obvious though is that physicians in Ghana do not regularly search the trial registry for ongoing trials relevant to their patients. Only 12.3% of respondents had searched for ongoing trials for their patients in the last 3 months even though all the respondents affirmed that regular update on the results of clinical trials can enhance their practice of evidence-based medicine. Only one-third of the physicians had ever referred patients for recruitment into clinical trials. The rest who didn’t refer any patient gave reasons ranging from not being aware of any ongoing clinical trials (50.7%) to thinking that their patients don’t really need to participate in any clinical trial. A few posited that the trial centres are far from their catchment area making them unwilling to refer their patients, while two respondents stated that they have not had opportunity to make any referral. However, there was no significant difference in the patient referral practices across the cadre.
The lack of adequate awareness of ongoing clinical trials by these physicians is also evident in their inability to discuss issues of clinical trials with their patients. Only 23.3% of respondents acknowledged discussing ongoing trials with their patients. Interestingly, 17.8% did not incorporate results of clinical trials in their clinical practice for no stated reason. This may impact negatively their practice of evidence-based medicine.
It is obvious that the reported barriers to subject recruitment in this study are not different from what is obtained in the literatures reviewed. However, important issues that can impact the conduct of clinical trial like the competence of the regulatory bodies and infrastructural support were not mentioned. This might mean that there are improvements in these aspects in Ghana compared to what obtained in the past or respondents underestimate their importance.
One resident doctor commented in his responses that …’ consultants are not eager to help residents learn how to do them or even pull them on board of the ones that they are doing’.
This brings up the issue of mentorship which is paramount in clinical research, including randomized controlled trials. A lot of resident doctors and even some consultants in Ghana are not so enthused by the idea of clinical research because of lack of proper mentorship during their training period. Thus, at the completion of their training, clinical duties take central stage and meaningful research is abandoned or at best relegated to the background. With time the drive to be involved in clinical research wanes. This negatively affects interest in ongoing trials let alone referring patients to such trials.
Proper documentation and record keeping which is foundational for any meaningful research is grossly underplayed in the hospital as noted by some of the respondents, thus gathering data becomes difficult. A situation where patients have to keep their folders at home and come with them at hospital visits, without any backup electronic database in the hospital can only result in the lingering problem of loss of data. This makes basic clinical research difficult including conducting randomized controlled trials.
Another important barrier noted is the fact that there are actually very few trials going on in Ghana cut across a few disease conditions. Even if all the physicians were aware of all the clinical trials, they may not be relevant to a lot of their patients based on their disease condition.
Strategies that may enhance subject recruitment and retention centers on adequate physicians’ education on randomized controlled trials, adequate dissemination of information by Contract Research Organizations (CROs) to physicians about ongoing clinical trials and collaboration with them to foster trust that will ensure referral of their patients. There appears to be a communication gap between these two parties. Putting up adverts on their websites as may be obtained in the developed countries may not work well here as internet access is limited and not many patients and even physicians search online for clinical trials adverts.
Public enlightenment campaign on the benefits of clinical trials using the media and community leaders in collaboration with healthcare workers can help allay the fears of the public about clinical research and foster willingness of patients to be referred for recruitment into clinical trials. An example of this public fear of clinical trials was witnessed in the public outcry that heralded the attempt to carry out Ebola vaccine clinical trial in Ghana.
Furthermore, clinical trial thrives on adequate funding. Most institutional randomized controlled trials are poorly funded, mostly paid out of pocket by the principal investigator. Patients are sometimes required to bear the cost of the treatment being investigated in order to lessen the cost burden on the investigator. Provision of research grants can encourage interest in clinical research making more clinical trials available and accessible. Incentives for both the physicians referring the patients and the patient, in a way that will not be considered an inducement, can encourage subject recruitment and retention.
This study’s main aim was to determine the physician related factors that influence subject recruitment into randomized controlled trials. An online survey on a section of doctors in Ghana was used. Ethical requirements were met before commencement of study. This study would probably have been more complete if the survey also involved the clinical research organizations who are actually involved in the conduct of these clinical trials to assess if they were having problems with meeting their recruitment targets.
Majority of physicians in Ghana are not aware of ongoing trials in their specialty both in Ghana and elsewhere in the world. Majority of them have not had any training on randomized controlled trials and have not been involved in any clinical trial. Generally, they have the right attitude towards randomized controlled trials and agree that it is beneficial and further scientific knowledge, and this is expressed in their willingness to refer their patients for recruitment. However, only one-third of them have actually referred patients for recruitment. There was no significant difference in the patient referral practices across the cadre of doctors, although there was a trend towards increased recruitment practice with increasing cadre.
Most of them do not regularly search the website for ongoing trials that may be beneficial to their patients. Thus, they don’t discuss ongoing trials with their patients. The single most important physician-related barrier to subject recruitment into clinical trial noted in this study is the lack of awareness of the physicians on ongoing clinical trials. Also important is the lack of exposure of these physicians to clinical trial during their training period making it difficult for them to imbibe this practice later in life.
We appreciate the contributions of all the doctors in Korle Bu Teaching Hospital that volunteered out of their busy schedules to take part in the survey. Each of the co-authors was involved in either the design, data collection or preparation of the article.
Funding: This was borne by the authors.
Conflict of interest: None declared.
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Dear Dr. Jessica Magne, Editorial Coordinator 0f Clinical Cardiology and Cardiovascular Interventions, The review process for the article “The Handling of Anti-aggregants and Anticoagulants in the Oncologic Heart Patient Submitted to Surgery” was extremely rigorous and detailed. From the initial submission to the final acceptance, the editorial team at the “Journal of Clinical Cardiology and Cardiovascular Interventions” demonstrated a high level of professionalism and dedication. The reviewers provided constructive and detailed feedback, which was essential for improving the quality of our work. Communication was always clear and efficient, ensuring that all our questions were promptly addressed. The quality of the “Journal of Clinical Cardiology and Cardiovascular Interventions” is undeniable. It is a peer-reviewed, open-access publication dedicated exclusively to disseminating high-quality research in the field of clinical cardiology and cardiovascular interventions. The journal's impact factor is currently under evaluation, and it is indexed in reputable databases, which further reinforces its credibility and relevance in the scientific field. I highly recommend this journal to researchers looking for a reputable platform to publish their studies.
Dear Editorial Coordinator of the Journal of Nutrition and Food Processing! "I would like to thank the Journal of Nutrition and Food Processing for including and publishing my article. The peer review process was very quick, movement and precise. The Editorial Board has done an extremely conscientious job with much help, valuable comments and advices. I find the journal very valuable from a professional point of view, thank you very much for allowing me to be part of it and I would like to participate in the future!”
Dealing with The Journal of Neurology and Neurological Surgery was very smooth and comprehensive. The office staff took time to address my needs and the response from editors and the office was prompt and fair. I certainly hope to publish with this journal again.Their professionalism is apparent and more than satisfactory. Susan Weiner
My Testimonial Covering as fellowing: Lin-Show Chin. The peer reviewers process is quick and effective, the supports from editorial office is excellent, the quality of journal is high. I would like to collabroate with Internatioanl journal of Clinical Case Reports and Reviews.
My experience publishing in Psychology and Mental Health Care was exceptional. The peer review process was rigorous and constructive, with reviewers providing valuable insights that helped enhance the quality of our work. The editorial team was highly supportive and responsive, making the submission process smooth and efficient. The journal's commitment to high standards and academic rigor makes it a respected platform for quality research. I am grateful for the opportunity to publish in such a reputable journal.
My experience publishing in International Journal of Clinical Case Reports and Reviews was exceptional. I Come forth to Provide a Testimonial Covering the Peer Review Process and the editorial office for the Professional and Impartial Evaluation of the Manuscript.
