|Year : 2019 | Volume
| Issue : 5 | Page : 692-700
Knowledge and practice assessment, and self reported barriers to guideline based asthma management among doctors in Nigeria
OB Ozoh1, CI Ndukwu2, OO Desalu3, OO Adeyeye4, B Adeniyi5
1 Department of Medicine, College of Medicine, University of Lagos, Lagos State, Nigeria
2 Department of Paediatrics, Faculty of Medicine, Nnamdi Azikiwe University, Awka, Nigeria
3 Department of Medicine, College of Medicine, University of Ilorin, Kwara State, Nigeria
4 Department of Medicine, Lagos State University College of Medicine, Lagos State, Nigeria
5 Department of Medicine, Federal Medical Center, Owo, Osun State, Nigeria
|Date of Acceptance||13-Feb-2019|
|Date of Web Publication||15-May-2019|
Dr. O B Ozoh
College of Medicine, University of Lagos, Lagos
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Background and Objective: Doctors' knowledge contributes to practice and quality of care rendered to patients. To assess the knowledge and practice assessment and self reported barriers to guideline-based management among doctors. Subjects and Methods: This was a cross-sectional study among doctors from various part of the country attending a continuing medical education (CME) program in Lagos, Nigeria. We used a self-administered, pretested, semistructured, validated questionnaire based on the Global Initiative for Asthma (GINA) guideline. Results: Of the 98 participants, 41 (42%) and 18 (18.4%) had good level of asthma knowledge and practice, respectively. There was no relationship between level of knowledge and practice and the level of knowledge was not associated with the practice (X2 = 6.56, P = 0.16). The most reported barriers to good guideline-based practice were the unavailability of diagnostic and treatment facilities (44.3%), poor medication adherence (25.7%), and high cost of asthma medications (18.6%). Conclusion: The level of asthma knowledge and practice, respectively, among doctors in Nigeria is low and there is no relationship between level of knowledge and practice. Unavailability of diagnostic and treatment facilities, poor medication adherence, and high cost of medications are important barriers to good practice. There is a need to improve asthma education among doctors in Nigeria. Addressing barriers to good practice is essential for the translation of knowledge into practice.
Keywords: Asthma, continuing medical education, knowledge, management, practice
|How to cite this article:|
Ozoh O B, Ndukwu C I, Desalu O O, Adeyeye O O, Adeniyi B. Knowledge and practice assessment, and self reported barriers to guideline based asthma management among doctors in Nigeria. Niger J Clin Pract 2019;22:692-700
|How to cite this URL:|
Ozoh O B, Ndukwu C I, Desalu O O, Adeyeye O O, Adeniyi B. Knowledge and practice assessment, and self reported barriers to guideline based asthma management among doctors in Nigeria. Niger J Clin Pract [serial online] 2019 [cited 2019 Aug 24];22:692-700. Available from: http://www.njcponline.com/text.asp?2019/22/5/692/258282
| Introduction|| |
Good asthma control is partly dependent on the provision of adequate asthma care by healthcare providers who have good knowledge and practice, following recommended guidelines for asthma management., International guidelines such as the Global Initiative on Asthma (GINA) provide recommendations for asthma management based on high quality evidence. Adherence to these guidelines has been demonstrated to improve asthma care.
The global burden of disease (GBD) report estimated that asthma was the 14th most important disorder in terms of global years lived with disability. The prevalence of asthma is increasing worldwide and more so in low- and middle-income countries. The prevalence of asthma in Africa is about 12% and the estimated prevalence among adults in Nigeria is about 10%., There is also a high frequency of poorly controlled asthma in this region, which implies a high disease burden.,, There is therefore a need for competent doctors with good level of asthma knowledge and practice for the management of asthma in the region.
Previous studies in Nigeria have demonstrated that doctors practicing at different levels of healthcare delivery have a low to modest level of asthma knowledge and practice.,, Adeniyi et al. further demonstrated that the level of practice in Nigeria was very poor even among those with modest levels of knowledge. This suggests the presence of other barriers that may limit good practice even with adequate knowledge. Evaluation of the relationship between level of asthma knowledge and practice as well as the identification of doctor-reported practice barriers has not been well elucidated. These are important in order to develop appropriate interventions to improve asthma care and control. The aims of this study were to evaluate the level of asthma knowledge and self-reported asthma management practice among doctors and explore the relationship between the level of knowledge and practice. We also aimed to identify self-reported barriers to guideline-based asthma management among these doctors.
| Subjects and Methods|| |
This was a cross-sectional study conducted in Lagos, Nigeria, in June 2015 among doctors attending a 1 day asthma continuing medical education (CME) program. Ethical approval was obtained from the Lagos University Teaching Hospital Health Research Ethics Committee.
The CME organizers invited participants from private and public health facilities across the country and all who met the inclusion criteria were eligible to participate. We consecutively recruited consenting participants as they arrived for the training.
Only healthcare providers who regularly attend to asthma patients were included in the study. We included general practitioners, resident doctors, or fellows in internal medicine, pediatrics, family medicine, and public health, who attended to asthma patients regularly.
Healthcare providers who did not regularly attend to asthma patients were excluded from the study. Pharmacists, nurses, and doctors in other specialties who did not attend to asthma patients regularly were excluded.
We used a modified pretested semistructured validated questionnaire that had been used in an earlier study in Nigeria. The questions were based on the GINA guideline, the Canadian Asthma Consensus guideline 2003, and previous study on asthma knowledge among physicians.,, The participants self-administered the questionnaires before the commencement of the training and it took about 20 min to complete.
The questionnaire obtained sociodemographic information, position, type of practice, years in practice, location of practice, attendance at a CME program on asthma in the preceding three 3, awareness and familiarity with the GINA guideline, and adherence to the guideline in practice. It also assessed asthma knowledge regarding the pathophysiology, diagnosis, and treatment of asthma using statements to which the doctors responded to as “true,” “false,” or “don't know.” Each correct response was scored 1 point and an incorrect response or “don't know” was scored 0. There were 42 questions and the maximum obtainable score was 42.
We assessed the self-reported asthma management practice using a modified version of the validated Asthma Physician Practice Assessment Questionnaire, which was developed by the Canadian Thoracic Society and which has been used in a previous study in Nigeria., It is in English language, which was well understood by all the participants and consists of 14 practice items regarding diagnostic testing, assessment, treatment, and follow-up. We included two additional questions on the use of the asthma control test (ACT) and familiarity with the use of the peak flow meter. The respondents were required to answer “yes” or “no” to the questions on practice. Each affirmative response scored 1 point and a negative response or unanswered question scored 0. There were 16 questions and the maximum obtainable score was 16.
Open-ended questioning was used to assess the barriers to practice. The participants were required to list most important barriers that limited guideline-based asthma management in their practice.
Data management and Statistical analysis
All missing data were documented and excluded in the final analysis.
We determined the proportion of participants that answered each knowledge question correctly and total knowledge scores. We calculated the measure of central tendencies for the scores and expressed as either mean ± SD or median + IQR depending on if the data was normally distributed or not and expressed the total scores for each participant as percentages. We set ≥75% total score as good level of knowledge, 50 to <75% as moderate knowledge, and <50% as poor knowledge, based on a similar study in Egypt, and based on this determined the proportion of participants with good, moderate, or poor level of knowledge.
For the self-reported management practice, we determined the proportion of participants that affirmed to each of the practice questions and the total score. We calculated the median and interquartile range (IQR) scores and expressed total scores as percentages. On the basis of the previous similar study, we set the cutoff point for good practice at ≥75%, 50 to <75% as moderate practice, and <50% as poor practice.
We explored the relationship between level of knowledge and level of practice as well as between level of knowledge and practice, respectively, with sociodemographic variables using the Chi-square test for independence to test the null hypothesis. We set a P value <0.05 as significant for all associations.
Responses on the self-reported barriers were grouped into categories and the most frequent were reported.
| Results|| |
Out of 120 questionnaires distributed, 98 were completed and returned (82% response rate). Mean age (standard deviation) was 34.2 (9.3) years. There were 47 (48%) male and 51 (52%) female. Eighty-two (83.7%) of the doctors practiced in urban areas, whereas 16 (16.3%) practiced in rural areas. Up to 51 (52%) worked in private hospitals [Table 1]. The median number of asthma patients seen each week by the doctors was 5 (2--10).
Level of asthma knowledge
Total knowledge scores ranged from 14--40 (33.3% to 95.2%), with median score (IQR) of 31 (26--34). On the basis of the defined criteria for scoring, 41 participants (41.8%) had good level of asthma knowledge, whereas 50 (51%) and 7 (7.1%) had moderate and poor knowledge scores, respectively.
When asked about asthma diagnosis based on the symptom of cough only, use of beta 2 agonist in exercise induced asthma and the use of theophylline in the management of asthma exacerbation [Table 2] and [Table 3], 35.7%, 24.5%, and 35.7% of participants, respectively, gave a correct answer to the questions.
|Table 2: Participants with correct responses on knowledge of the pathophysiology and diagnosis of asthma|
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|Table 3: Participants with correct responses on the knowledge of asthma treatment|
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Relationship between level of knowledge and sociodemographic variables
Lack of postgraduate qualification was associated with poor knowledge, 82.5% of participants with poor knowledge had no postgraduate qualification (X2 = 12.5, P < 0.001). Working in a nontertiary hospital was associated with poor knowledge, 61.4% and 31.6% of participants with poor knowledge worked in private hospitals and General or District hospitals, respectively (X2 = 20.9, P < 0.001). Lack of asthma CME in the preceding 3 years was associated with poor knowledge, 84.2% of participants with poor knowledge had no asthma CME in the preceding 3 years (X2 = 9.4, P = 0.002). Lack of awareness of the GINA guideline was associated with poor knowledge, 59.6% of participants with poor knowledge were not aware of the GINA guideline (X2 = 6.7, P = 0.03). Similarly, unfamiliarity with the GINA guideline was associated with poor knowledge, 72% of participants with poor knowledge were unfamiliar with the GINA guideline (X2 = 11.2, P = 0.004). The relationship between level of knowledge and age group and gender, respectively, was not significant (P = 0.009 and 0.17, respectively), although 89.4% of those with poor knowledge were less than 40 years of age.
Level of asthma practice
Total practice scores ranged from 0--16 (0--100%), with a median score (IQR) of 10 (4.8--12). The lowest proportion of affirmative responses were for Questions 11 on the use of ACT to assess asthma control, Question 10 on use of GINA guideline to assess control, and Question 2 on providing written referrals for asthma education (24.5%, 28.6%, and 28.6%), respectively [Table 4]. The proportion who confirmed the diagnosis of asthma using pulmonary function tests was also very low (30.6%). The highest proportion of affirmative responses were for Question 6 on providing smoking cessation advice, Question 5 on identifying environmental triggers, and Question 12 on addressing patients' concern on disease/treatment (70.4%, 75.5%, and 76.5%, respectively) [Table 4].
On the basis of the already defined criteria for good practice (≥75% total score), 18 (18.4%) of the participants had a good level of practice, 42 (42.9%) had a moderate practice, whereas 38 (38.8%) had a poor practice.
Relationship between level of practice and sociodemographic variables
Working in nontertiary hospitals was associated with poor practice, 61.3% and 23.8% of participants with poor practice worked in private hospitals or District/General hospitals, respectively (X2 = 22.2, P < 0.001). Lack of asthma CME in the preceding 3 years was associated with poor knowledge, 77.5% of participants with poor knowledge had not asthma CME in the preceding 3 years (X2 = 5.6, P = 0.02). Nonaffirmation to following the GINA guideline was associated with poor practice.,73.8% of participants with poor practice did not follow the GINA guidelines (X2 = 5.8, P = 0.02). Lack of additional postgraduate qualification was not significantly associated with poor practice (P = 0.006) but 72.5% of participants with poor practice did not have additional qualification. The relationship between level of practice and age group or gender, respectively, was not significant (P = 0.007 and 0.74, respectively), although 87.3% of participants with poor practice were less than 40 years.
Relationship between knowledge and practice
Ten (24.4%) of the participants with good level of knowledge also had good level of practice and 4 (57.1%) of those with poor level of knowledge also had poor level of practice. Twenty-four (48%) of those with moderate knowledge had poor practice and 7 (14%) had good practice. Although there was a significant positive correlation between knowledge score and practice score (r = 0.308, P = 0.002), the relationship between the proportion of participants with good level of knowledge and good level of practice was not significant (X2 = 6.56, P = 0.16).
Perceived barriers to guideline based asthma management
The most reported barrier to guideline-based asthma management was unavailability of diagnostic facilities and asthma medications as reported by 44 (44.3%) of the participants [Table 5]. Poor patient adherence to asthma medication and high cost asthma medications were also reported as major barriers.
| Discussion|| |
The main finding in this study is that the proportion of doctors who attended this CME program with good level of asthma knowledge and practice, respectively, was low. We also found a lack of association between the presence of good level of knowledge and good level of practice. The main reported barrier to guideline-based practice was the poor availability of diagnostic and treatment facilities.
The low level of knowledge and practice among these group of doctors is consistent with previous reports from Nigeria and other parts of Africa.,,,,,,, In a recent study among doctors in Nigeria, asthma knowledge was very low and many doctors regarded aminophylline as a significant part of acute asthma management. Self-reported asthma practice among pediatric residents in a tertiary hospital in Nigeria was also poor across all aspects of asthma care, and this was consistent with the report from a tertiary hospital in Uganda., The low level of knowledge among our participants was not unexpected as less than 30% of them had attended educational programs on asthma in the preceding 3 years, despite being actively involved in the clinical care of asthma patients. We also demonstrated that nonattendance at an asthma CME was associated with poor knowledge and practice. Previous multistate surveys conducted about 5 years ago in Nigeria have shown that between 8.8--16.3% of doctors attended any form of asthma education course within the year preceding the surveys., These two studies were conducted prior to the commencement of compulsory CME attendance for renewal of practicing license. The implication is that most doctors treating patients with asthma rely on the previous knowledge gained during medical school training and are not likely to be abreast of nor utilize current information in patient care, which may result in poor outcome., Expectedly, participants with no additional qualification and those working in private hospitals and nontertiary hospitals had poor knowledge and practice. This may be because of the nonacademic settings of these hospitals where updates of doctors' knowledge in informal settings such as grand rounds and clinical meetings may not be regular. Since most doctors obtain their medical information from professional meetings and less from self-study, they are more likely to be reliant on old knowledge obtained from medical school training. Doctors have a professional obligation to improve their knowledge and skills throughout their career and previous study in Nigeria and elsewhere have shown a correlation between attendance at CME programs and changes in physician behavior and professional practice.,,,
The awareness and use of the GINA guidelines in clinical practice has been shown to improve care and outcome. Similar to a previous study in Nigeria, awareness of the GINA guideline by the doctors in our study was low (50%) and only a third of the doctors followed the GINA guideline in clinical practice. Factors such as practice barriers, clinical inertia, and time constraints, which have been attributed to poor adherence to guidelines are consistent with our findings. Patient factors such as poverty and limited access to medications, patient preferences, and poor adherence to recommendations from their doctors as corroborated in this study also influence adherence to guideline. The low rate of use of asthma control measurement tools (ACT and GINA) found in our study is also similar to previous reports among doctors in Nigeria and Egypt., Assessment of asthma control using standard methods is strongly recommended by the GINA guideline as it guides asthma management and promotes good outcome, for example, it may prompt optimization of treatment where needed or reduction in asthma medication if warranted. The proportion of doctors in our study with good practice is higher than in the earlier report that used similar criteria to determine good knowledge and practice. Reason may be because of the inclusion of doctors such as gynecologists and surgeons who may not treat asthma patients regularly. However, the lack of association between good knowledge and good practice was consistent with our findings as well as a report among doctors in Egypt., This supports the concept of the existence of barriers to good practice despite adequate level of knowledge and may be because of resource limitations and application obstacles that justify the call for knowledge translation that focuses on health outcomes, behavior change, and identification of pathways that make it easier to follow evidence. Furthermore, the doctors in our study stated that unavailability of facilities for asthma diagnosis and treatment, poor patient compliance, and high cost of asthma medications were the major barriers to guideline-based asthma management. This was reflected in the low proportion of doctors that confirmed the diagnosis of asthma using pulmonary function tests (Question 1). A previous study in Nigeria has reported on the inadequacy of facilities for effective asthma management, limited availability of medications, and high cost of medications, which support the authenticity of these reported barriers. Most doctors in Nigeria who practice outside the tertiary institutions lack access to spirometry. In other parts of sub-Saharan Africa, inadequacy of facilities and medications and high cost of medications is also a challenge.,, For example, in Uganda, the availability of inhaled corticosteroid and spirometry was 47% and 24%, respectively, and the cost of a combination of an inhaled corticosteroid and a long acting beta 2 agonist was higher than half of an average monthly wage. Conversely, poor asthma practice has also been reported despite the availability of diagnostic and treatment facilities. This was illustrated in South Africa where Mash et al. in an audit of primary care facilities found that asthma was not objectively diagnosed using lung function tests, asthma control was not monitored, patients did not receive optimal controller medications and asthma education despite the availability of these facilities. In more developed climes, a disconnect has consistently been found between knowledge and practice, despite availability of diagnostic and treatment facilities.,, Cost of care has been largely implicated especially for those not on insurance cover. Barriers in these climes have also been found to be created by differences between physician and patient perception of the goal of asthma management. Patients have been found to stop therapy when asymptomatic and also when they have concerns about side effects and risk of becoming dependent. These indicate that improving asthma management goes beyond improving the availability and affordability of facilities and medication. It requires a holistic approach that also incorporates practice audits to ensure the utilization of available resources.
Poor patient compliance to asthma therapy is another reported barrier to good asthma management in our study, and may be because of poor understanding resulting from inadequate education offered by doctors. The limited number of asthma specialists as alluded to in this study may also lead to very busy clinics for these doctors which limits time for adequate asthma education. It is consistent with a previous report in which a majority of asthma patients were dissatisfied with the level of asthma education they received from their doctors. The training and incorporation of asthma educators such as nurses, pharmacists, or other healthcare workers into the asthma management team as recommended by the GINA guideline is an important approach that has the potential to improve patient education and patient understanding of asthma.
The strengths of our study are the inclusion of participants from across Nigeria who practiced in private and public hospitals as well as doctors from rural areas. Also, the use of open-ended questions to assess the barriers to asthma practice made it possible to explore them more extensively. However, the relatively small sample size, convenience sampling, and recruitment of participants at an asthma CME program may have biased the results as these may be persons who already have interest in asthma and may have attended to update their asthma knowledge and practice and are likely to have a higher than average level of knowledge. The Asthma Physician Practice Assessment Questionnaire which was developed in Canada contains questions in English language, which all doctors in Nigeria are fluent in and these questions are also relevant to Nigerian setting as asthma pathophysiology, diagnosis, and management practices are consistent regardless of populations. Although, it was used in a previous study in Nigeria, it has not been formally validated in our setting and we recognize this limitation. The inability to verify self-reported practice by chart review or practice audit is another recognized limitation; however, the high level of poor practice may suggest that the real situation may be worse than we have reported as respondents are more likely to report good practice speciously rather than poor practice. Despite these limitations, we have provided data that lays credence to the low level of asthma knowledge and practice among doctors in Nigeria. We have highlighted the absence of an association between good asthma knowledge and good practice and brought to the fore the existence of barriers to good practice that are beyond the level of knowledge of doctors. These provide guidance to stakeholders for the development of interventions to improve asthma care and control in Nigeria.
| Conclusion|| |
The level of good asthma knowledge and practice among these doctors attending a CME program in Nigeria was very low with no association between good asthma knowledge and good practice. The major barriers to good asthma practice were unavailability of diagnostic and treatment facilities, high cost of medications, and poor patient adherence to medications. There is need to improve asthma education for doctors and also imperative is the need for increased advocacy for the provision of enabling environments for good practice with improved access to affordable asthma diagnostic and therapeutic facilities.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
OBO, CIN and OOD: conceptualization, data acquisition and analysis, drafting of manuscript and review of final version of manuscript.
OOA and BA: Conceptualization and review of manuscript and approval of final version.
The manuscript has been read and approved by all the authors, the requirements for authorship as stated earlier in this document have been met, and each author believes that the manuscript represents honest work.
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[Table 1], [Table 2], [Table 3], [Table 4], [Table 5]