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Developing a competency-based medical education curriculum for the core basic medical sciences in an African Medical School

Authors Olopade F, Adaramoye O, Raji Y, Fasola AO, Olapade-Olaopa EO

Received 17 November 2015

Accepted for publication 22 February 2016

Published 18 July 2016 Volume 2016:7 Pages 389—398

DOI https://doi.org/10.2147/AMEP.S100660

Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Md Anwarul Azim Majumder



Funmilayo Eniola Olopade,1 Oluwatosin Adekunle Adaramoye,2 Yinusa Raji,3 Abiodun Olubayo Fasola,4 Emiola Oluwabunmi Olapade-Olaopa5

1Department of Anatomy, 2Department of Biochemistry, 3Department of Physiology, 4Department of Oral Pathology, 5Department of Surgery, College of Medicine, University of Ibadan, Ibadan, Nigeria

Abstract: The College of Medicine of the University of Ibadan recently revised its MBBS and BDS curricula to a competency-based medical education method of instruction. This paper reports the process of revising the methods of instruction and assessment in the core basic medical sciences directed at producing medical and dental graduates with a sound knowledge of the subjects sufficient for medical and dental practice and for future postgraduate efforts in the field or related disciplines. The health needs of the community and views of stakeholders in the Ibadan medical and dental schools were determined, and the “old” curriculum was reviewed. This process was directed at identifying the strengths and weaknesses of the old curricula and the newer competences required for modern-day medical/dental practice. The admission criteria and processes and the learning methods of the students were also studied. At the end of the review, an integrated, system-based, community-oriented, person-centered, and competency-driven curriculum was produced and approved for implementation. Four sets of students have been admitted into the curriculum. There have been challenges to the implementation process, but these have been overcome by continuous faculty development and reorientation programs for the nonteaching staff and students. Two sets of students have crossed over to the clinical school, and the consensus among the clinical teachers is that their knowledge and application of the basic medical sciences are satisfactory. The Ibadan medical and dental schools are implementing their competency-based medical education curricula successfully. The modifications to the teaching and assessment of the core basic medical science subjects have resulted in improved learning and performance at the final examinations.

Keywords: competency-based medical education, curriculum revision, basic medical science, integration

Background

The regular review of curricula is necessary to ensure that these instruments for student instruction reflect changes in the society and are thus contemporary.1 Major revision of medical/dental curricula is recommended every 5 years as half of all medical knowledge becomes outdated within this period.2

Most sub-Saharan medical/dental schools are still using the curricula adopted from their colonial masters at the time of inception of the schools several decades ago.3 This has meant that the schools are largely out of tune with the health needs of their societies and with contemporary medical education.4,5

The current health care challenges faced by sub-Saharan Africa (SSA) are particularly severe and demand that the continent’s medical/dental schools produce graduates who are able to respond to the peculiar needs of their community. Competency-based medical education (CBME) is an outcome-based training model that concentrates on equipping the graduate with knowledge, skills, and attitudes that are relevant to the host community.6,7 This educational model is adjudged to be most suited for rapidly changing health needs of individual communities and is increasingly being adopted by medical schools worldwide including SSA in order to equip graduates with the skills required for contemporary medical and dental practice in the continent.710

The College of Medicine of the University of Ibadan (CMUI) recently completed a review of its MBBS and BDS (preclinical) curricula, which produced what we believe are the first entirely home-grown curricula in SSA.11 This paper reports on the revision process as it applies to the core basic medical sciences component of the curriculum, that is, anatomy, biochemistry, and physiology.

Methods

The curriculum revision was undertaken through a series of overlapping processes that took place from 2001 to 2012, described briefly in another paper.10 A summary is presented in the subsections below.

Capacity building

Preparatory to the curricular reform, seven CMUI academic staff (four from the Faculty of Clinical Sciences and three from the Faculty of Basic Medical Sciences) undertook formal training in medical education both locally and internationally.12 These academic staff members formed the core of the teams charged with directing various aspects of the curriculum reform process.

Needs assessment (2001–2006)

During this period, the opinions of the various stakeholders in the CMUI MBBS and BDS curriculum (college executives, teaching and nonteaching staff, medical/dental students, employers of doctors, and members of the public) were sought on the kind of doctors and dentists needed, using questionnaires, interviews, and discourses. In the end, the consensus was that graduates of the medical and dental schools were not meeting the current and future health needs of the country. Therefore, a curriculum review was deemed necessary.

Later in 2004, the university received a capacity strengthening grant from the John T and Catherine D MacArthur foundation, and revision of the MBBS curriculum was selected as a pilot for a university-wide curricula revision. One of the authors (EOO) was appointed as the principal investigator.

Reforming the curriculum (2005–2010)

The curriculum reform was done by a Curriculum Review Committee working in partnership with the College Curriculum Committee. The committee included college executives and representatives from all departments/disciplines contributing to the MBBS and BDS curricula and student representatives.

The Curriculum Review Committee critically evaluated the previous curriculum and consulted contemporary national and international medical curriculum guidelines.1316 It also scrutinized the admission process, especially the entry criteria, and studied the learning processes of the students.17 This review process identified the strengths and weaknesses of the old MBBS and BDS curriculum (Table 1). Further deliberations of the committee considered different curricular philosophies and identified CBME curriculum as the most appropriate method of instruction to produce doctors who are “fit for-practice” in contemporary Nigeria.

Table 1 Strengths and weaknesses identified in the “old” traditional CMUI curriculum for MBBS/BDS


Abbreviation: CMUI, College of Medicine of the University of Ibadan.

Following the review, the curriculum was then wholly revised by restructuring the old teaching and assessment methods, repackaging the old courses, and adding new ones to ensure acquisition of the desired competences.

Restructuring of the teaching schedule of the core basic medical sciences

The 2010 curricula retained the general framework of the old MBBS and BDS curricula, that is, length of study (5 years) and the concept of preclinical and clinical schools with the first three semesters focusing on learning the core basic medical sciences. The MBBS and BDS part 1 final examinations were also retained in place and structure (Table 2). However, the internal arrangement of the curricula was modified in the revised version. With this rearrangement, the core basic medical sciences were to be taught in a horizontally integrated fashion in the first two semesters, while the third semester was dedicated to the vertical integration of the core basic medical sciences with laboratory medicine and clinical sciences. This restructuring focused on teaching of the basic science subjects on MBBS/BDS requirements. It also allowed new courses to be added to the teaching schedule (see “Introduction of new courses” and Figure 1).

Table 2 Learning methods for anatomy, biochemistry, and physiology for MBBS and BDS


Abbreviations: PCR, polymerase chain reaction; PSA, prostate-specific antigen; MCQs, multiple choice questions; SAQs, short answer questions.

Figure 1 Graphic representation of 2010 CMUI integrated curriculum.


Abbreviations: CMUI, College of Medicine of the University of Ibadan; GIP, general introductory; OBGYN, obstetrics and gynecology; Exam, examination; PSM, preventive and social medicine; PHS, public health science.

Introduction of new courses

Courses relevant for future medical and dental practice were introduced at this level of instruction. These include the “medicine/dentistry as a profession” course to give the students an early orientation into the professional demands of medical and dental practice. Another is the “multidisciplinary healthcare delivery” course that comprises joint team-based learning sessions with students of other health professions (nursing, physiotherapy, human nutrition, and pharmacy) to give them an early orientation to team-based approach to health care, which is necessary for effective and efficient patient care. The “clinical application of basic medical sciences” course was also added in the third semester to ensure an early exposure of the students to clinical and laboratory medicine scenarios so they can have a better understanding of the relevance of the basic medical sciences to subsequent clinical science learning and medical/dental practice.

Development of competency-based curricula

Determination of desired competencies learning objectives

To ensure that the revised CMUI curriculum was competency-based, teachers from each of the core basic medical science departments identified the desired competences (learning objectives) for medical students in the basic medical sciences, drawing from the needs assessment done earlier. The core learning objectives of the basic medical sciences were:

  1. To produce medical graduates who have sound knowledge and skills of basic medical sciences that are sufficient for medical education of global standards.
  2. To introduce students to the clinical applications of basic medical sciences.
  3. To produce medical graduates with a general knowledge of research in basic medical sciences.

Subsequent to this, “desired competencies” as “learning objectives” were identified for each course, and the methods of teaching and assessment that would guide learning in this direction were developed based on the needs assessments done earlier in the revision process (Table 2).

Acquisition of prioritization of learning

To further guide the students in prioritizing their learning, the curriculum content was classified into “must know/must know to pass”, “should know/should know to pass”, and “may know/may know to pass”, which were allotted 50%, 30%, and 10%, respectively, of the instruction time (Table 3). The “must-knows” are compulsory competencies that the student must possess in order to pass an examination in that area, while the “should-knows” are desirable but not compulsory and “may-knows” are nonessential competencies for the course.

Table 3 Desired competences for anatomy, biochemistry, and physiology for MBBS


Abbreviations: ATP, adenosine triphosphate; ELISA, enzyme-linked immunosorbent assay; CVS, cardiovascular system; PCR, polymerase chain reaction; PSA, prostate-specific antigen; RIA, radioimmunoassay.

Modification of teaching methods

In recognition of the fact that medicine and dentistry are primarily professions of skills, the new curriculum places a greater emphasis on the acquisition of these practical skills, with the ratio of percentage of time allotted to practical classes and didactic lectures being 60:40. Additionally, to encourage a deep approach to learning, small group tutorials were allotted 60% of the time for didactic lectures. These tutorial groups are to ensure that students are effectively mentored and their progress is closely monitored. Additionally, the tutorials are to use aspects of the problem-based learning model to encourage early acquisition of self-learning skills. To further engender the skills of self-directed learning and teamwork, individual and group term papers were also introduced, which would be assessed formatively and summatively.

Modification to the assessment methods

The assessment methods of the students were standardized and include formative (nonconsequential) and summative (consequential) examinations. These reflect the prioritized teaching with courses described earlier, that is, 50%, 30%, and 10% being allocated to the “must know to pass”, “should know to pass”, and “may know to pass”, respectively (Table 3). The Part I MBBS and BDS final examination were retained at the end of the third semester but were modified to have an integrated component. Furthermore, the student must obtain 37.5% of the 50% total marks from the “must know” section and must pass all three basic science subjects with ≥50% of marks available.

Horizontal integration

The revision led to the development of a novel harmonized course schedule in which the students would receive lectures on the anatomy, biochemistry, and physiology of the same region or systems of the body in a concurrent fashion. Thus, the students would receive instructions on, for example, the anatomy of the digestive system, biochemical functions of gastrointestinal hormones, and physiology of gastrointestinal movements, digestion, and absorption of nutrients concurrently. To facilitate this harmonization, a “basic medical sciences for MBBS/BDS time table” was drawn up jointly by the three departments. The next step was the harmonization of the course contents of the basic medical science lectures. The lecture topics being taught were harmonized and synchronized to reduce repetition of teaching by the departments.

Vertical integration

The third semester of preclinical school was dedicated to vertical integration of basic medical sciences with laboratory medicine and clinical science disciplines (the clinical application of basic sciences). This course is to be taught by clinicians and laboratory medicine specialists alongside their basic science counterparts. A revision posting of the core basic medical sciences would be done before the Part I final examination, which would hold at the end of the third semester.

Changes peculiar to each of the core basic medical science subjects

Physiology

Instructions in physiology had always been system based. This meant its schedule could be used as the template for horizontal integration with anatomy and biochemistry. The established order of giving these lectures was based on the proximity of functions and the complexity of the topic. For example, the respiratory system was taught just before the cardiovascular system and the gastrointestinal system just before the urinary system. However, the harmonization of topics with anatomy and biochemistry meant that this order was lost and the teachers were initially concerned about the change. In the end, the advantages of the harmonization of topics were considered to outweigh this perceived loss of order once the modification was accepted.

Given the objective of the revised curriculum that emphasized acquisition of practical skills, the practical sessions were expanded. A number of new sessions were developed in order to increase the breadth and the depth of the students’ exposure and instruction in physiology. A definite effort was also made to ensure that the practical sessions followed the lecture sessions so as to consolidate learning as early as possible.

Anatomy

The main change peculiar to gross anatomy was the shift of paradigm from region-based to system-based teaching; this was a major thrust of the curriculum review. This was achieved by consensus or concurrent teaching where possible. A compromise schedule was designed in which the teaching of gross anatomy was done by regions, but once in a region, the systems in the region would be taught concurrently with other aspects of anatomy as well as physiology and biochemistry. The teaching session of the three modules of anatomy (gross anatomy, embryology, and histology) of the various systems was then horizontally integrated with the other basic medical science courses during instruction of the students.

Biochemistry

In the old curriculum, the established order for giving biochemistry lectures was to teach from simpler to more complex topics; however, the harmonization of topics with anatomy and physiology meant that this model had to be given up and topics taught in consonance. Also, adjustments were made to the schedule, and the fundamentals of biochemistry would still be taught first to ensure the students have a good foundation in the subject.

To achieve the objectives of the new curriculum, a number of topics in biochemistry that were considered as being in excess of the MBBS requirement were removed, thus allowing the students to concentrate on the more relevant topics. The practical schedule was also revamped, and modern topics in practical biochemistry relevant to medical training were retained.

Institutional approval

In line with the University of Ibadan 1986 Act,18 the revised MBBS curriculum was approved by the Academic Board of the College on April 2010 and was ratified by the university senate on August 30, 2010. Its operation commenced in the 2011/2012 academic year, and the fourth set of students has been admitted.

Implementation

The newly implemented curriculum has presented ample challenges to the institution, staff, and its students. Perhaps, the most striking challenge is the sense of uncertainty being felt by the students admitted under the revised curricula. This is because students usually look up to their seniors for guidance through the years of instruction. However, the senior students are unable to provide this guidance to their juniors as they are being trained under a different system (the old curriculum). This scenario has left the pioneer students under the revised curriculum feeling that they are the “guinea pig” set. On the other hand, the senior students are complaining of feeling abandoned as all attention is focused on implementing the revised curriculum. The senior students also have a sense of despair as they are concerned that their degrees may be considered inferior to those who graduate from the revised curricula. However, all these concerns have been ameliorated gradually as succeeding sets of students are admitted, and with increasing familiarly with the revised curriculum, by the teachers and students alike.

Implementing a revised curriculum is always expensive, especially as the teaching and nonteaching staff have to be trained and new facilities must be provided and teaching aids acquired. Fortunately, the University/College was awarded a 5-year grant from the Medical Education Partnership Initiative of the United States Government from which it has been able to provide part of the much-needed funds and international collaborations.19,20

The prioritization of knowledge to be learned by students is yet to be universally accepted as some teachers still expect the students to be conversant with all aspects of what they are taught regardless of emphasis. This has caused some degree of confusion and frustration on the part of the students, but the issue is being gradually resolved by retraining the teachers. In addition, the benefits of the introduction of “clinical applications of basic sciences” are yet to be fully realized. This is because although the students appreciate the clinical relevance of the basic medical sciences, they are still distracted from full participation in the lecture series since they are yet to take their Part I final examination, which involves mainly the core basic medical science subjects but includes tests on their clinical application. A reorientation for the teachers and students is ongoing in order for them to take full advantage of these innovations.

Discussion

Curricula are the guidelines for student instruction and must be reviewed regularly to keep them relevant to the changing needs of the society the institution serves.8 Thus, the revised CMUI MBBS and BDS curricula were directed at producing doctors who are best suited for 21st-century Nigeria and possess competences that are of an international standard. They must also be socially responsive and accountable to the community, thus increasing in country retention.21 Importantly, these documents have been well received by the medical education fraternity and were the template for the first national template for MBBS and BDS curricula in Nigeria.22

Competency-based medical/dental education curricula are being adopted as the preferred instruments of medical instruction worldwide as they are adjudged to be better at producing fit-for-practice graduates for all communities.7,23 This is because the determining of the competencies desired to be acquired (which are derived from the host community’s health needs) as a first step in the development of the curriculum (rather than the content) is a recent process that ensures that each instrument of instruction is unique to its institution/locality and its vision and mission. This curricular philosophy also prescribes a convergence of teaching and assessment methods by all the subspecialties/disciplines contributing to the courses, as these are of necessity directed at achieving a common goal of producing a competent “generalist” doctor instead of attaining expertise in each subspecialty/discipline.

Revision of the CMUI MBBS and BDS basic medical science curricula was facilitated by the fact that at the level of basic medical science, the components of these two programs were similar in content and the students are majorly taught together. The new curriculum not only preserved this similarity but also enabled emphasis of the competencies peculiar to each program, especially in the clinical school. While these outcomes have led to a closer relationship between these programs, the latter advantage has contributed to the demand by the other health professional courses for competency-based curricula as it would emphasize their identities as distinct disciplines.

In keeping with modern principles of medical education,24,25 the methods of instruction and assessment in this revised curriculum have been chosen to suit our students and learning environment.10 In this manner, we took the fact that our students are admitted from secondary (high) school into consideration and adopted a hybrid curriculum that is a mixture of traditional didactic teaching and small group teaching (tutorials). The change in the methods of teaching and assessment of the basic medical sciences in the CMUI has been effective as the students now have a deeper understanding of the basic medical science concepts of both professions and are better mentored and prepared for clinical instruction. This improvement was achieved by the integration and prioritization of instruction, the increased small group teaching and practical sessions, and the emphasis on self-directed learning. Assessments have also been modified to compliment the revised teaching methods and to drive the required learning. To this end, the assessments test mainly the acquisition of basic science competencies required for medicine/medical practice with a proportion of the questions being integrated with either laboratory medicine or clinical science. Importantly, to obtain an overall pass in the final basic science examination for medicine and dentistry, our students are required to pass each basic science subject and to obtain a minimum mark in the “must know” section.

Expectedly, the effects of implementing the revised MBBS and BDS curricula on the college, its staff, and students have been significant. This is because CBME curricula require a change in the philosophy of achieving student learning,26 namely, changes to processes of faculty development, student instruction and assessment, strategies of institutional operation, monitoring and evaluation, and shared vision with regulatory bodies/government.27 Importantly, the institution is adjusting to the new philosophy of instruction by putting the necessary mechanisms in place to ensure as smooth a transition as is possible. We are presently on the temporal coordination level of integration on the “integration ladder” described by Harden28 and are working toward greater levels of integration in future. When combined with the decreased time allotted for teaching of the core basic medical sciences, this modification has been quite tasking for both students and teachers alike. However, seminars on pedagogy given to the teachers have better equipped them for teaching and to use the small group tutorials to fill in the gaps.

Four sets of students have been admitted since the approval of the curriculum in 2010. The first two of these sets have sat for the final basic medical science examinations and proceeded on to the applied basic and clinical sciences. Their knowledge of basic medical sciences and ability to apply the same to the clinical sciences, as adjudged by their clinical assessors, are at least comparable with, if not better than, that of the students in the previous curriculum. This has proved to be the litmus test for the revised curricula as they validate the CBME as a good model of instructing medical and dental students and certify the 2010 MBBS/BDS curricular reforms a success. These observations are particularly encouraging as the majority of studies on recent curricula revisions found that the learning of the basic sciences may be insufficient for clinical instruction.2931 However, careful evaluation of the reports revealed that the curricula were mostly wholly problem-based learning based, and the students were required to achieve an overall pass in the final basic science examination with no sanction for any student who failed individual basic science components. We believe we have avoided this pitfall in our curriculum and indeed improved basic science learning by our students due to the adoption of a hybrid teaching model and a noncompensatory final assessment method that requires a pass in each basic science subject and a minimum mark in the “must know” section in order to obtain an overall pass.

Understandably, the successful revision of the MBBS and BDS curricula and their implementation has had a significant impact on the university and has led to agitation for similar revisions by other disciplines. Other health professional courses are particularly keen to revise their curricula into competency-based instruments having recognized the advantages on student learning.

Conclusion

The CMUI has recently revised its MBBS and BDS curriculum into a CBME curriculum that aims to produce doctors who are fit-for-practice in Nigeria now and in the future. This review included modification of the teaching and assessment of the core basic medical science subjects. Despite understandable (and expected) challenges of its implementation process, the project has been rewarding as it has resulted in improved learning and performance at the final examinations. A formal evaluation of the outcomes of this curriculum is being planned.

Disclosure

The authors report no conflicts of interest in this work.

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