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Knowledge and pharmaceutical care practice regarding inhaled therapy among registered and unregistered pharmacists: an urgent need for a patient-oriented health care educational program in Iraq

Authors Abdulameer SA

Received 17 November 2017

Accepted for publication 16 January 2018

Published 12 March 2018 Volume 2018:13 Pages 879—888


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Richard Russell

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Shaymaa Abdalwahed Abdulameer

Faculty of Pharmacy, Al-Rafidain University College, Baghdad, Iraq

Background: Inadequate inhaled aerosol device demonstration and technique by health care professionals can lead to poor disease control. The aims of this study were to develop and validate Knowledge of Aerosol Tool (KAT) among registered and unregistered pharmacists and to assess the pharmaceutical care practice among registered pharmacists.
Methods: The KAT and pharmaceutical care practice questionnaires were developed and modified from previous reports, then an observational cross-sectional study with a convenience sample size of 340 was carried out among registered and unregistered pharmacists. The validation process included face validity and reliability, and item analysis was carried out.
Results: The results showed good face validity and reliability with Cronbach’s alpha test and Pearson’s correlation coefficient for test–retest of 0.637 and 0.440, respectively. The KAT item difficulty index for most items was between 0.130 and 0.667. The total KAT scores for registered and unregistered pharmacists were 10.13±3.152 and 8.29±2.930, respectively, which revealed inadequate pharmacist knowledge of inhaled aerosol device technique and therapies. In addition, only 38.38% of the total sample was found to have a high KAT level score. The results showed higher KAT scores among males, pharmacists with a family history of respiratory disease, and pharmacists with a master’s degree. For the registered pharmacists, there were positive correlations between the total KAT score and the total pharmaceutical care practice score and the average number of patients with a respiratory disease seen by the pharmacist weekly, respectively. Moreover, there was a positive correlation between the total KAT score and its aerosol administration subscale with pharmacotherapy care and comorbid disease management practice care.
Conclusion: The KAT showed good validity and reliability, hence, it can be used for training or educational purposes. This study showed that professional knowledge and pharmaceutical care are a major concern in Iraq. KAT implementation depends on the whole educational process from undergraduate study to residence training.

Keywords: aerosol knowledge, pharmaceutical care, validation, pharmacist


For higher efficiency and fewer side effects, aerosol medications are preferred for obstructive airway diseases.1 However, the most serious limitation is patient skill in using the device. The incorrect use of aerosol devices can lead to poor disease control.24 Therefore, patients must use them correctly for successful pharmacological action. For these reasons, training the patient on how to use inhaler devices correctly is very important, as stated by the clinical practice guidelines for asthma and COPD, the European Respiratory Society, and the International Society for Aerosols in Medicine.57

Several studies showed that most patients did not handle inhaler devices properly.813 Moreover, it has been reported that health care professionals who prescribe or supervise patients’ use and skills had poor knowledge and skills regarding aerosol use.1419 Undoubtedly, when the health care professionals are uncertain and have questionable skills on how to use aerosol devices, the patient definitely cannot be expected to use them properly. In addition, the pharmacist is the last line of defense before patients attempt to self-administer medication, as the pharmacist plays a significant role in patient education; however, there is a paucity of literature regarding this issue.

According to the report of the Ministry of Health in Iraq, primary health care centers were visited by approximately 230,000 asthmatic patients in 2013 and approximately 200,000 patients per year are either hospitalized or treated in an emergency room.20 Moreover, a recent study has found that a substantial proportion of patients with asthma or COPD are using their inhaler incorrectly.21 Most of pharmacists’ knowledge is gained from formal study or practice. In Iraq, colleges of pharmacy (government or private universities) offer a bachelor’s degree in pharmaceutical sciences which enables the graduates to work as a pharmacist (in government, private or both sectors). On reviewing the pharmacy curriculum, it was found that the clinical pharmacy and therapeutics subjects were studied over 2 years (4th and 5th year students, respectively). Clinical pharmacy subject has 3 h credits (2 h theoretical and 1 h practical per semester) while therapeutics has 5 h credits (theoretical only). Asthma and COPD topics have only 3 h slots only (4th year students). In addition, objective structured clinical examination (OSCE) is not offered in the curriculum of these colleges. Moreover, guidelines on how to use aerosol medications are not even included in the textbooks of these colleges.

Furthermore, pharmacists’ knowledge of aerosol medications clearly affects patient response to medication and other pharmaceutical care practice. Additionally, patients seeking advice, treatment, and reassurance should receive the correct information and guidance regarding their medications during patient-centered communication with the pharmacist. Therefore, the aims of this study were to develop and validate Knowledge of Aerosol Tool (KAT) among registered and unregistered pharmacists and to assess the pharmaceutical care practice among registered pharmacists.


Participants and study design

An observational cross-sectional study was carried out between November 2016 and April 2017 in Baghdad, the capital of Iraq. Baghdad city has two large district areas named Al-Kharkh and Al-Rusafa. Random cluster sampling method was used to select three areas from each. All retail pharmacies from those areas were considered eligible for participation in the study. All eligible pharmacies were visited by the researcher. Pharmacists declining participation at this initial contact were excluded from the study. Pharmacists deferring until a later date for reasons of inconvenience received two additional visits only; deferment at this time excluded the pharmacist from study. All participants provided written informed consent prior to participation in this study. All personal information collected was considered confidential. The study protocol was approved by the Scientific Committee of Al-Rafidain University Collage, Baghdad, Iraq.

The study comprised of three sections. The first section involved background and demographic information. The second and the third sections were KAT questionnaire and pharmaceutical care practice questionnaire.

Instruments and measurements

The KAT is a 24 multiple-choice item tool in English language with two subscales designed to measure the knowledge of aerosol administration technique and aerosol medicine use with a total score ranging from 0 to 24. A higher score means more knowledge. The KAT questionnaire has two unrelated subscales. Each subscale has 12 items (score ranging from 0 to 12). Then, arbitrarily, two groups were generated: low (range 0–5 points) and high (range 6–12 points) levels for each subscale. Hence, the total lowest score of KAT for adequate (or high) knowledge will be 12. Thus, a cutoff point of 12 was chosen to discriminate between high and low levels. The KAT questionnaire was developed, modified, and compiled from previous reports on comprehensive assessment of aerosol knowledge regarding diverse inhaler devices and common medicine used in Iraq.1,22,23 In addition, pharmaceutical care practice questionnaire was modified from previous report to measure the registered pharmacists care practice.24 It is 4-point Likert type scale (Never, score 1; Always, score 4) with a total score ranging from 5 to 20. Higher score means higher practice.

Sample size

A recommendation suggested that at least five subjects per item are needed to evaluate the reliability and validity of KAT questionnaire.25 Therefore, 120 participants were needed for the purpose of validation. Doubling the sample size, with an additional 30% as drop out, was considered necessary for the study to overcome erroneous results and increase the reliability of the conclusions. With this number of participants, it would be possible to discriminate between high and low correlations.26 Only 195 registered pharmacists (pharmacists who graduated from college of pharmacy and members of the Syndicate of Iraqi Pharmacists [SIP]) were accepted to be involved in this study and completed the questionnaire. Twenty five participants from the sample population were randomly selected for test–retest reliability within 1–2 weeks and not included in the final sample study. During the registration meeting governed by the SIP for unregistered pharmacists (pharmacists newly graduated from college of pharmacy and not members of SIP), a comparable sample (N=170) was selected randomly.

Validation and reliability

Face validity

Face validity is the capacity of an item to measure the construct that it proposes to measure.27 Five experts in the pharmacy field were invited in order to test the degree of difficulty, clarity, appropriateness, and comprehensiveness of the questionnaire items and to provide feedback and judge the face validity of KAT questionnaire.


The internal consistency of KAT questionnaire was evaluated using Cronbach’s alpha with a minimum acceptable criterion above 0.50. The corrected item total correlations between the scales and their corresponding items were assessed with a minimum acceptable correlation of 0.20.28 Pearson’s correlation coefficient was used to evaluate test–retest reliability.25

Statistical analysis

Percentages, frequencies, and mean ± SD were used when applicable. The significance level was set at a P-value less than 0.05 using Predictive Analytics Software version 19.0. The chi square, Mann–Whitney U, and Kruskal–Wallis tests were used to evaluate the association and differences when applicable. The statistical analysis of the validation processes included assessing reliability (Cronbach’s alpha and test–retest) and item analysis.


Out of a total of 312 registered pharmacists receiving the questionnaire, only 170 agreed to participate in this study (total response 54.49%). The total sample for validation study was 340 (170 registered pharmacists and 170 unregistered pharmacists), in addition to 25 registered pharmacists for test–retest analysis.


The demographic characteristics of the study population are presented in Table 1. For registered pharmacists, the average patient number with respiratory disease seen weekly and pharmacists’ years of work experience were 7.98±3.566 and 7.61±7.585 years, respectively. The most common source of information about aerosol was undergraduate study (52.4%) followed by reading leaflets of the inhaler devices (22.4%). The most common answer about who trains patients on inhaler devices was “either the doctor or pharmacist” (54.1%). More than half of the registered pharmacists agreed that the primary obstacle in pharmaceutical care services was the lack of training (52.4%), followed by time constraints (39.4%). While for unregistered pharmacists, the most common sources of information obtained about aerosol use were undergraduate study (72.4%) followed by reading articles or specialized books (20.6%). The most common answer about who trains patients on inhaler devices was “nobody, but we provide written information” (47.6%).

Table 1 The demographic data of registered and unregistered community pharmacists in Iraq
Notes: Data presented as mean ± standard deviation or percentage. Significant difference between groups, aP<0.001; bP<0.05.
Abbreviation: KAT, Knowledge of Aerosol Tool.

Validation and reliability

For the reliability, the Cronbach’s alpha test of internal consistency was 0.637 for the 24 items of KAT, and it is within the recommended acceptable result for reliability.28 The test–retest reliability of the 24 items of KAT indicated worthy reliability and stability of the instrument with Pearson’s correlation coefficient of 0.440 (P<0.05).

Regarding item analysis for KAT, the item difficulty index for most items was between 0.130 and 0.667, which is satisfactory (Table 2). No item scored above 0.70 (which indicated that most of the subjects answered these questions incorrectly) and two items (item 3, 22) had low difficulty index below 0.20. However, these two items were retained as they reflected basic knowledge regarding aerosol therapy administration technique and use. The corrected item-total correlation (point biserial correlation) values ranged from 0.115 to 0.361 (Table 2). Although 12 items (item 1, 3, 4, 5, 7, 8, 13, 16, 17, 18, 19, and 23) showed corrected item-total correlation value of less than 0.20, all items appeared to be suitable for retention depending on the meaningfulness of the items and the study design’s scientific point of view. Ferguson’s sigma for the questionnaire was 0.948, which is considered perfect.

Table 2 Psychometric properties of the KAT by item analysis (N=340)
Note: *Corrected item-total correlation.
Abbreviation: KAT, Knowledge of Aerosol Tool.

Knowledge of aerosol

Table 3 shows the correct answer percentage of KAT and its two subscales. The total KAT scores for registered and unregistered pharmacists were 10.13±3.152 and 8.29±2.930, respectively, which revealed inadequate pharmacist knowledge of inhaled therapies and technique. In addition, only 38.38% of the total sample was found to have high KAT level scores. The results showed that the registered pharmacists had a higher total KAT and its subscales scores than unregistered pharmacists (P<0.01).

Table 3 Descriptive and correct answer percentages for KAT and its subscales
Abbreviation: KAT, Knowledge of Aerosol Tool.

The results showed a higher proportion of KAT scores among male pharmacists with a family history of respiratory diseases and pharmacists with a master’s degree (P<0.05). Furthermore, pharmacists with a postgraduate degree and who read leaflets accompanying inhaler devices had higher total KAT scores than pharmacists who read articles or books specialized in the field (P<0.05). Additionally, there were significant differences in the total KAT score according to the pharmacists’ attitude regarding who trains the patient on inhaler device use (P<0.05). Finally, the results showed insignificant associations between total KAT score and university type, employment status, pharmacy or hospital location area, and primary obstacles in pharmaceutical care services (P>0.05). There were significant associations between the pharmacist type and some of KAT questions (3, 7, 11, 14, 16, 17, 19, 20, 21, and 23, P<0.05). The results showed that the registered pharmacists had a higher correct answer response for these questions than unregistered pharmacists. Table 4 shows the percentage of correct response and incorrect response of each question of KAT among the sample population.

Table 4 KAT answer frequencies (N=340)
Notes: Correct answers appear in bold; significant association *P<0.01, **P<0.001, ***P<0.05.
Abbreviation: KAT, Knowledge of Aerosol Tool.

Pharmaceutical care practice

Table 5 shows pharmaceutical care practice questionnaire results of registered community pharmacists in Iraq. The pharmaceutical care practice scores of registered pharmacists were moderate (12.42±3.258) and only 22.90% had low practice scores. There were significant differences between pharmaceutical care practice and the university type (higher scores with government university [P<0.05]), and the pharmacists’ attitude (pharmacists who train patients on inhaler device use had higher practice scores than others [P<0.05]).

Table 5 Appropriate pharmaceutical care practice regarding inhaled therapy among registered community pharmacists in Iraq (N=170)

KAT and pharmaceutical care practice correlations

For the registered pharmacists, there were positive correlations between the total KAT score and the total pharmaceutical care practice score (r=0.196, P<0.05) and the average number of patients with a respiratory disease seen weekly by the pharmacist (r=0.463, P<0.01). Moreover, there were positive correlations between total KAT score and aerosol administration technique subscale with pharmacotherapy care practice (r=0.188, P<0.05 and r=0.239, P<0.01, respectively) and comorbid disease management care practice (r=0.208, P<0.01 and r=0.179, P<0.05, respectively) (Table 6). The knowledge of aerosol medicine use subscale was positively correlated only with comorbid disease management care practice (r=0.154, P<0.05). There were significant correlations between KAT total score with both knowledge of aerosol administration technique subscale (r=0.680) and knowledge of aerosol medicine use subscale (r=0.814), (all P<0.01). In addition, there was a significant correlation between KAT subscales (r=0.162, P<0.01). Furthermore, a significant association was found between KAT levels (high and low) and practice levels (high and low) (P<0.05).

Table 6 Correlation matrix between pharmaceutical care practice and knowledge of aerosol tool (N=170)
Note: *P<0.05, **P<0.01.
Abbreviation: KAT, Knowledge of Aerosol Tool.


All health care professionals have the responsibility to ensure that patients take their medications correctly, especially aerosol medications. Nowadays, there are a lot of aerosol devices that enhance patients’ adherence to medication but instructions on how to use them is still the responsibility of the health care professional at each visit.

Many studies have shown that registered pharmacists were inadequately demonstrating aerosol medication technique.23,2931 However, no study has focused on aerosol knowledge of unregistered pharmacists or the effect of aerosol knowledge on pharmaceutical care practice or diverse inhaler device knowledge technique.

The KAT questionnaire showed good validity and reliability and is suitable for use for training purposes. This study showed a low level of knowledge regarding aerosol administration and medication use among both registered and unregistered pharmacists. Many factors affected participants’ knowledge, eg, gender, a family history of asthma or COPD, educational level, and source of information. A previous report showed gender, age, years of work experience did not affect pharmacists’ aerosol knowledge.32 In contrast, these factors did not affect the pharmaceutical care practice of the registered pharmacists. Moreover, the results showed that work experience had no effect on the pharmaceutical care practice, which is inconsistent with a previous report.33 This may be due to lack of training, as 52% of the participants showed that lack of training is the primary obstacle, even though the result was insignificant. As a consequence, low level of knowledge directly affects the pharmaceutical care practice among Iraqi pharmacists as there was a positive correlation between them as mentioned previously. The results showed that the average patient number had a positive correlation with the KAT and the practice scores, respectively. This means that the number of patients who seek advice is a motivating factor for pharmacists to increase their knowledge regarding aerosol and pharmaceutical care practice. However, the overall knowledge and practice scores in the sample population were low and medium, respectively. Therefore, changing ways of education and training can improve the overall knowledge and practice to enable better service to the community.3437 Also, it was found that collaboration between the health care providers can enhance the overall outcome of the patients.36,38

A previous report showed that pharmacists’ professional performance was under-appreciated by the Iraqi society as only 20.20% of the sample population showed that the knowledge of the pharmacist will lead them to choose a particular community pharmacy.39 This is due to the lack of advice and information they received from the pharmacists. Ibrahim et al’s study supports our findings that a low KAT score of pharmacists will affect the pharmacists’ practice professionally and finally patients’ attitude toward the pharmacists’ role in the community. Another study showed that a high level of pharmaceutical care practice enhanced patients’ appreciation.33 Therefore, to enhance the knowledge and pharmaceutical care regarding any disease, Iraqi colleges should either offer OSCE exams and increase the total credits of the clinical pharmacy and therapeutic subjects or offer a Pharm-D program which is more oriented to patient care and pharmaceutical practice. For example, in Iraq, the students are taught chemistry (chemistry and pharmaceutical chemistry) for ten semesters (5 years), while for clinical pharmacy subjects it is only 2 years (four semesters, starting from 4th and 5th years). Every community pharmacist should be an expert in pharmaceutical care, pharmacotherapy, and health promotion and have good communication skills. Thus, it is important that the pharmacy courses offered in Iraq keep up with the rising demands of patient-centered health care.

In Iraq, it is important to include training exams or continuous educational programs (like continuing professional development and continuing pharmacy education) offered by the SIP or any official institutes as a prerequisite to becoming a licensed registered pharmacist. The Ministry of Health offers a free of charge Clinical Pharmacy Program, but not for all unregistered pharmacists (only for top ten graduates).40 Overall, these programs will increase the pharmacists’ knowledge, attitude, and practice toward pharmaceutical care.34,41 An alternative option is to focus on educational research with emphasis on the objective measures of clinical professional performance, so as to improve pharmacy education and residency training.34


Using a validated tool to evaluate the knowledge and practice of health care professionals is an important step to improve the whole educational process or enhance pharmaceutical care. The KAT showed good validity and reliability, hence, it can be used for training or educational purposes. This study showed that professional knowledge and pharmaceutical care are a major concern in Iraq. Its implementation depends on the whole educational process from undergraduate study to residence training.


The author reports no conflicts of interest in this work.



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