Public knowledge and behaviours relating to antibiotic use in Gulf Cooperation Council countries: A systematic review

Country data on AMR in Kuwait in the context of community-acquired respiratory tract infections: links between antibiotic susceptibility, local and international antibiotic prescribing guidelines, access to medicine and clinical outcome

Background

Antimicrobial resistance (AMR) is one of the biggest threats to global public health. Selection of resistant bacteria is driven by inappropriate use of antibiotics, amongst other factors. COVID-19 may have exacerbated AMR due to unnecessary antibiotic prescribing. Country-level knowledge is needed to understand options for action.

Objectives

To review AMR in Kuwait and initiatives underway addressing it. Identifying any areas where more information is required will provide a call to action to minimize any further rise in AMR within Kuwait and to improve patient outcomes.

Methods

National initiatives to address AMR, antibiotic use and prescribing, and availability of susceptibility data, particularly for the key community-acquired respiratory tract infection (CA-RTI) pathogens Streptococcus pneumoniae and Haemophilus influenzae, were identified. National and international antibiotic prescribing guidelines commonly used locally for specific CA-RTIs (community-acquired pneumonia, acute otitis media and acute bacterial rhinosinusitis) were also reviewed, plus local antibiotic availability. Insights from a clinician in Kuwait were sought to contextualize this information.

Conclusions

In Kuwait there have been some initiatives addressing AMR such as annual campaigns for proper use of antibiotics. Antibiotic use is high but there appears to be a low understanding in the general public about their appropriate use. However, there is legislation in place prohibiting over-the-counter purchase of antibiotics. Only international guidelines for CA-RTIs are used. A more standardized inclusive approach in developing local guidelines, using up-to-date surveillance data of isolates from community-acquired infections in Kuwait, could make management guideline use more locally relevant for clinicians. This would pave the way for a higher level of appropriate antibiotic prescribing and improved adherence. This would, in turn, potentially limit AMR development and improve clinical patient outcomes.

Prevalence of inappropriate use behaviors of antibiotics and related factors among chinese antibiotic users: an online cross-sectional survey

Background

Inappropriate use of antibiotics could have a profound negative impact on individual and community. This study aimed to assess the prevalence of inappropriate use behaviors of antibiotics in Chinese antibiotic users and explored their related factors.

Methods

A cross-sectional survey was conducted from July 1, 2018 to September 30, 2018. A structured questionnaire was widely distributed on the online survey platform (Questionnaire Star, https://www.wjx.cn) and was used to collect data from respondents in China on demographic and sociological characteristics, antibiotic use and related knowledge. Main outcomes included self-medication with antibiotics (SMA), self-storage with antibiotics (SSA), and non-adherence to antibiotic treatment (NAAT). Logistic regression was used to identify the related factors of above inappropriate use behaviors of antibiotics.

Results

Of the 15,526 participants, 37.1% reported SMA in the past 6 months, 67.9% reported SSA in the past 6 months, and 48.3%, 15.2%, 25.5% and 78.0% of respondents said that they had missed antibiotics, increased antibiotic dosage, decreased antibiotic dosage, and discontinued antibiotics once symptoms disappear, respectively. Overall, 53.3% reported NAAT during this period. After adjusting for other variables, multivariate logistic regression analyses showed that those aged 30–44 years old, with higher levels of education, poorer status of self-perceived health, or lower levels of antibiotic knowledge were more likely to have these inappropriate use behaviors of SMA, SSA, and NAAT (P < 0.05).

Conclusions

The prevalence of SMA, SSA, and NAAT is high in China. Developing a nationwide action plan for the rational use of antibiotics among publics, including national media publicity, online and offline health education, and medication guidance from general practitioners, is urgently needed.

Self-medication with antibiotics, self-storage with antibiotics, and non-adherence to antibiotic treatment are important performances of inappropriate use behaviors of antibiotics.

The results of this study showed that the prevalence of inappropriate use behaviors of antibiotics among Chinese antibiotic users were between 37.1% and 67.9%.

A nationwide action plan for rational use of antibiotics is urgently needed in China.

Omani senior secondary school students’ knowledge of and attitudes to antibiotic resistance

Antibiotic resistance is a worldwide problem that is increasing largely due to the misuse of antibiotics in human health and agriculture. This situation is further exacerbated by a dearth of new antibiotic development, the focus of pharmaceutical companies having shifted to more lucrative treatments for chronic conditions such as elevated blood pressure. To conserve the efficacy of the current crop of antibiotics, it is vital that they are used appropriately by individuals. Effective education may be a means to achieve such appropriate use. This paper reports on a large-scale, mixed methods study, which employed a survey and oral questionnaires, undertaken with senior secondary Omani students. The study explored students’ understanding of antibiotic resistance as well as their attitudes to the issue of antibiotic resistance. The study findings indicated that, although some students had a reasonably clear understanding of antibiotic resistance, many had serious misconceptions that could result in misuse of antibiotics. The article concludes with suggestions for amending secondary school pedagogy in Oman to address the misconceptions.

The Associations between Poor Antibiotic and Antimicrobial Resistance Knowledge and Inappropriate Antibiotic Use in the General Population Are Modified by Age

OBJECTIVES

Understanding factors influencing inappropriate antibiotic use can guide the design of interventions to improve antibiotic practices and reduce antimicrobial resistance (AMR).

METHODS

A nationally representative cross-sectional survey (N = 2004) was conducted between November 2020 and January 2021. Knowledge of antibiotic use and AMR using the World Health Organization's Multi-Country AMR Survey questionnaire, and antibiotic practices were examined. Multivariable logistic regression was performed to identify factors associated with inappropriate antibiotic use and examine effect measure modifications.

RESULTS

After adjusting for potential confounding, poor knowledge of antibiotic use was associated with a 3x increased odds of inappropriate antibiotic use in adults aged ≥50 years (aOR 3.11, 95% CI [2.24-4.32]), 5× increased odds in those aged 35-49 years (aOR 4.88, 95% CI [3.32-7.16]), and 7× increased odds in those aged 21-34 years (aOR 6.58, 95% CI [4.19-10.33]). While there was no statistically significant association in adults aged ≥50 years, poor knowledge of AMR increased the odds of inappropriate antibiotic use by 4 times in adults aged 35-49 years (aOR 3.73, 95% CI [1.53-9.11]) and 5 times in those aged 21-34 years (aOR 4.90, 95% CI [1.84-13.02]).

CONCLUSIONS

Targeted educational interventions for specific age groups are needed in conjunction with empowering the public with knowledge of antibiotic use and AMR.

Cross-Sectional Survey among General Population Regarding Knowledge and Attitude toward Antibiotic Usage in Western Saudi Arabia

Background: Antibiotic resistance is a threatening issue to human wellbeing and an obstacle in the treatment process of many life-threating illnesses. This study aims to assess the knowledge and attitudes toward antibiotic usage among the general population in Jeddah, Saudi Arabia. Methods: A self-administered cross-sectional survey of 460 participants was distributed among the general population in Jeddah in the form of a validated questionnaire. Sample size was calculated to be 460 adults of either gender. Descriptive and inferential statistical analyses were performed using the Statistical Package for Social Sciences. Results: the age of more than half of participants (55.6%) was 18–30 years old, followed by the age group 31–40 years old (26.6%), with the smallest age group >60 years old (1.9%). More than two thirds of participants were male (69.5%), while 131 were female, accounting for 30.5%. Almost one third of participants had poor knowledge about antibiotics (30.5%), 51.0% had used antibiotics without any prescriptions, 54.6% of participants thought antibiotics could be used to treat viral infections, and 55.1% thought it was acceptable to stop taking antibiotics if symptoms start to improve. In addition, 49% believed that taking antibiotics would help them get better more rapidly when suffering from the common cold. Some personal characteristics were significantly associated with the public’s knowledge (e.g., age, education, and monthly income) and their attitudes (e.g., monthly income). Conclusion: Findings revealed a low level of knowledge on the use of antibiotics among the general public in Jeddah. This study signifies the need for improvement in the public’s knowledge and enhancement of their attitudes toward proper utilization of antibiotics.

Evaluation of the potential environmental risk from the destination of medicines: an epidemiological and toxicological study

BACKGROUND

The high consumption of medicines by the population and their storage at home might cause an increase in the number of pharmaceutical substances that may be inappropriately discarded in the sanitary sewage, reaching an environmental aquatic. Thus, the effects of these emerging contaminants need more studies.

OBJECTIVES

To identify the profile of most medicines that are discarded by users of community pharmacy and evaluate the toxicity of the most disposed drugs.

METHODS

This was a translational study. A descriptive observational study was carried out for convenience of community pharmacy users using a standardized questionnaire. Subsequently, the lethal concentration 50 (LC₅₀) for medicine that is most frequently discarded was determined. After LC_50, the embryos (n = 144) were exposed to sublethal concentrations for most discarded drug at 24, 48, and 72 h. Mortality, heartbeat, and embryo deformities were used as parameters of toxicity.

RESULTS

Most respondents (96%) had a "home pharmacy." The primary forms of disposal were in the common household waste, kitchen sink, and/or bathroom. The medicines that were most incorrectly discarded by the interviewees were nimesulide (17.1%), dipyrone (10.7%), and paracetamol (5.2%). LC₅₀ of nimesulide was calculated (0.92 μgmL^-1). The toxicological test revealed that embryos exposed to nimesulide showed several abnormalities, such as defects in the spinal cord, tail, yolk sac, as well as pericardial edema. Furthermore, the heartbeat decreased by 30% at a concentration of 0.4 μgmL^-1 as compared with control group. The yolk sac and pericardial areas increased to >100% in all treatment groups when compared with the control group.

CONCLUSION

Respondents disposed medicines in an inappropriate manner primarily in household waste and in the toilet. Nimesulide was the most discarded drug according to study population. Moreover, teratogenic effects such as spinal cord defects, decreasing heartbeats, and increasing pericardial and yolk sac area in embryos were observed after exposure to nimesulide. These results show that nimesulide may promote risk to aquatic organisms and to human health if it is discarded in an unsafe manner.

Perceptions regarding antimicrobial use and resistance among adult hospital patients in Saudi Arabian Ministry of Health (MOH) hospitals

Background

Education, a key strategy within antimicrobial stewardship programmes (ASPs), has been mainly directed towards healthcare professionals and prescribers more than hospitalised patients.

Aim

To examine patients' knowledge and perceptions of antibiotic use and resistance, while evaluating the institutional role of patient education on antibiotic use in two Saudi Arabian hospitals, one with an implemented ASP and one without an ASP.

Method

A cross-sectional self-administered survey was developed and piloted. A total of 400 surveys were distributed, 200 within the hospital with an ASP and another 200 within the hospital without an ASP. Data were coded and analysed. Ethical approval was obtained before the start of the study.

Findings

176 patients responded to the survey with 150 surveys completed and analysed. 78% of patients agreed that they should only take an antibiotic when prescribed by the doctor, however they still tended to keep left over antibiotics for future use. 84% of patients were unaware 'antibiotic resistance', with 48% believing that antibiotics help them get better quicker when they had a 'cold'. Information on antibiotic use and resistance were provided to patients in the hospital with an ASP in contrast to the hospital without an ASP.

Conclusion

Overall there are poor perceptions regarding antibiotic use and resistance among hospital patients in Saudi Arabia. Patients in the hospital with ASP demonstrated greater knowledge during their hospitalisation. ASPs should not only focus on educating healthcare professionals but should involve the patients and seize the opportunity to educate them while hospitalised.

Retrospective Analysis on Antimicrobial Resistance Trends and Prevalence of β-lactamases in Escherichia coli and ESKAPE Pathogens Isolated from Arabian Patients during 2000-2020

The production of diverse and extended spectrum β-lactamases among Escherichia coli and ESKAPE pathogens is a growing threat to clinicians and public health. We aim to provide a comprehensive analysis of evolving trends of antimicrobial resistance and β-lactamases among E. coli and ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acine to bacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) in the Arabian region. A systematic review was conducted in Medline PubMed on papers published between January 2000 and February 2020 on countries in the Arab region showing different antibiotic resistance among E. coli and ESKAPE pathogens. A total of n = 119,144 clinical isolates were evaluated for antimicrobial resistance in 19 Arab countries. Among these clinical isolates, 74,039 belonged to E. coli and ESKAPE pathogen. Distribution of antibiotic resistance among E. coli and ESKAPE pathogens indicated that E. coli (n = 32,038) was the predominant pathogen followed by K. pneumoniae (n = 17,128), P. aeruginosa (n = 11,074), methicillin-resistant S. aureus (MRSA, n = 4370), A. baumannii (n = 3485) and Enterobacter spp. (n = 1574). There were no reports demonstrating Enterococcus faecium producing β-lactamase. Analyses revealed 19 out of 22 countries reported occurrence of ESBL (Extended-Spectrum β-Lactamase) producing E. coli and ESKAPE pathogens. The present study showed significantly increased resistance rates to various antimicrobial agents over the last 20 years; for instance, cephalosporin resistance increased from 37 to 89.5%, fluoroquinolones from 46.8 to 70.3%, aminoglycosides from 40.2 to 64.4%, mono-bactams from 30.6 to 73.6% and carbapenems from 30.5 to 64.4%. An average of 36.9% of the total isolates were reported to have ESBL phenotype during 2000 to 2020. Molecular analyses showed that among ESBLs and Class A and Class D β-lactamases, bla_CTX-M and bla_OXA have higher prevalence rates of 57% and 52.7%, respectively. Among Class B β-lactamases, few incidences of bla_VIM 27.7% and bla_NDM 26.3% were encountered in the Arab region. Conclusion: This review highlights a significant increase in resistance to various classes of antibiotics, including cephalosporins, β-lactam and β-lactamase inhibitor combinations, carbapenems, aminoglycosides and quinolones among E. coli and ESKAPE pathogens in the Arab region.

Empowerment of nurses in antibiotic stewardship: a social ecological qualitative analysis

BACKGROUND

Inappropriate antibiotics use and antimicrobial resistance (AMR) are increasingly becoming global health issues of great concern. Despite the established antibiotic stewardship programmes (ASPs) in many countries, limited efforts have been made to engage nurses and clearly define their roles in ASPs.

AIM

An exploratory qualitative study was conducted to understand the facilitators and barriers that impact nurses' involvement and empowerment in antibiotic stewardship.

METHODS

Focus group discussions (FGDs) were conducted with purposively sampled nurses from three major public hospitals in Singapore. FGDs were audio-recorded and transcribed verbatim. Data were analysed using Applied Thematic Analysis and interpreted using the Social Ecological Model.

FINDINGS

At the intrapersonal level, nurses felt empowered in carrying out their roles in antibiotic administration. They saw themselves as gatekeepers to ensure that the prescribed antibiotics were administered appropriately. However, nurses felt they lacked the knowledge and expertise in antibiotic use and AMR prevention. At the interpersonal level, this deficit in knowledge and expertise in antibiotic use impacted how they were perceived by patients and caregivers as well as their interactions with the primary care team when voicing outpatient safety concerns and antibiotic administration suggestions. At the organizational level, nurses relied on drug administration guidelines to ensure appropriate antibiotic administration and as a safety net when physicians questioned their clinical practice. At the community level, nurses felt there was a lack of awareness and knowledge on antibiotic use among the general population.

CONCLUSION

These findings provide important insights to harness the contributions of nurses, and to formally acknowledge and enlarge their roles in ASPs.

Understanding consumer behavior patterns in antibiotic usage for upper respiratory tract infections: A study protocol based on the COM-B framework

BACKGROUND

Irrational use of antibiotics is prevalent worldwide. But our understanding on consumer behaviors in the use of antibiotics is very limited. This study aims to identify consumer behavior patterns in the use of antibiotics for upper respiratory tract infections (URTIs).

METHODS

The study will employ a mixed methods approach based on the "Capacity & Opportunity & Motivation - Behavior" (COM-B) framework. The COM-B attributes of consumers in relation to the use of antibiotics will be extracted from a systematic literature review. Semi-structured in-depth interviews will be conducted on 20-25 community residents with URTI symptoms over the past three months to illustrate the meaning and implications of the thematic categories of COM-B attributes for the purpose of measurement development. The measurement instruments will be modified and validated through Delphi consultations with 15 experts and a survey of 300 adult residents in Wuhan. A cross-sectional survey using the finalised measurement instruments will be conducted on 2700 adult residents randomly selected from 18 residential communities across 9 municipalities in 3 provinces in China. Multi-level latent class analyses will be performed to categeorise the respondents based on the indicators measuring the behavioral features (need recognition, information searching, alternative assessment, purchase, use, and post-use evaluation) of consumers in purchasing, consuming and disposing antibiotics for URTIs. Multi-nominal regression analyses will be performed to determine the predictors of different behavior patterns.

DISCUSSION

This study aims to classify consumers into distinguished categories of behavior patterns toward the use of antibiotics for URTIs. Such a classification system categories the consumers with similar behavior features into the same group so that better targeted interventions can be developed. The COM-B model adopted in this study can also help us better understand the underlying mechanisms of different behavior patterns of consumers.

Knowledge, Attitude, and Practices of Antibiotics and Antibiotic Resistance Among Chinese Pharmacy Customers: A Multicenter Survey Study

BACKGROUND

Resistance to antibiotics is one of the major global health challenges. An adequate understanding of the public regarding rational antibiotic use is a prerequisite to limit progression in antibiotic resistance. This study aimed to investigate the knowledge, attitude, and practices (KAP) of antibiotics and antibiotic resistance among customers visiting community pharmacies.

METHODS

This study was undertaken in three capital cities in China during March 2019 and July 2019 by using a questionnaire of 28 items. The questionnaire had four parts, including sociodemographic characteristics, KAP about antibiotics, and antibiotic resistance. A systematic random sampling approach was used to recruit the participants. Kruskal-Wallis and Mann-Whitney tests were carried out for data analysis.

RESULTS

The response rate was 66.7% (1800/2700). Out of the total, only 9.7% of the customers had good knowledge about antibiotics. Nearly half of the participants were unable to differentiate between antibiotics, and anti-inflammatory drugs (n = 820, 45.6%, Median = 2, IQR = 1). Most of the customers were of the view that the use of over the counter antibiotics in pregnant women is unsafe (n = 1307, 72.6%, Median = 2, IQR = 0). Almost half of the participants disagreed that costly antibiotics are more effective and have fewer side effects (n = 897, 49.9%, Median = 3, IQR = 1). Only 22.3% of participants said that they always finish the course of antibiotic treatment (n = 401, 22.3%, Median = 3, IQR = 1).

CONCLUSION

The knowledge of Chinese pharmacy consumers was inadequate, and a lack of good attitudes and practices in certain aspects of antibiotic use was observed. Educational interventions are needed to increase public knowledge of antibiotics.

Impact of community-based educational intervention on antibiotic use and resistance awareness among the people living in Ras Al Khaimah, United Arab Emirates

Objectives

Antibiotic resistance is a major global public health concern today. We explored the usefulness of an educational intervention in increasing antibiotic-related awareness of the public.

Methods

This community-based interventional study was conducted among 100 people living in Ras Al Khaimah, UAE. Preintervention awareness regarding antibiotics and antibiotic resistance was assessed using the World Health Organization antibiotic resistance: multicountry public awareness survey. After the baseline assessment of the knowledge, educational intervention was given to the study participants. The same questionnaire was used to assess the impact of this intervention after 4 weeks.

Key findings

The study participants had low baseline knowledge of antibiotics and the phenomenon of antibiotic resistance. A high proportion of study participants (54%) took antibiotics in the past 6 months. Our intervention significantly improved antibiotic-related knowledge and behaviours. Postintervention majority of study participants realized that full course of antibiotics should be taken (% change: 50.0, P &lt; 0.001), leftover antibiotics from family and friends should not be used (% change: 40.0%, P = 0.004), antibiotics are of no use in viral infections (% change: 72.0%, P &lt; 0.001), infections are becoming increasingly resistant to antibiotics (% change: 37%, P &lt; 0.001), bacteria resistant to antibiotics can be spread from person to person (% change: 73%, P &lt; 0.001) and infections from resistant bacteria are difficult to treat (% change: 38%, P &lt; 0.001).

Conclusion

Following the intervention, antibiotic-related awareness was significantly improved among study participants. Further efforts should be made to ensure that this improved awareness is converted to necessary health behaviour changes in the long term.

Antimicrobial Resistance: Implications and Costs

Antimicrobial resistance (AMR) has developed as one of the major urgent threats to public health causing serious issues to successful prevention and treatment of persistent diseases. In spite of different actions taken in recent decades to tackle this issue, the trends of global AMR demonstrate no signs of slowing down. Misusing and overusing different antibacterial agents in the health care setting as well as in the agricultural industry are considered the major reasons behind the emergence of antimicrobial resistance. In addition, the spontaneous evolution, mutation of bacteria, and passing the resistant genes through horizontal gene transfer are significant contributors to antimicrobial resistance. Many studies have demonstrated the disastrous financial consequences of AMR including extremely high healthcare costs due to an increase in hospital admissions and drug usage. The literature review, which included articles published after the year 2012, was performed using Scopus, PubMed and Google Scholar with the utilization of keyword searches. Results indicated that the multifactorial threat of antimicrobial resistance has resulted in different complex issues affecting countries across the globe. These impacts found in the sources are categorized into three different levels: patient, healthcare, and economic. Although gaps in knowledge about AMR and areas for improvement are obvious, there is not any clearly understood progress to put an end to the persistent trends of antimicrobial resistance.

Public practices on antibiotic use: A cross-sectional study among Qatar University students and their family members

BACKGROUND

Antimicrobial resistance (AMR) is a serious public health problem and a global concern. The inappropriate use of antibiotics has been identified by the World Health Organization as a major risk factor for AMR.

METHODS

The purpose of this research study is to assess the prevalence of inappropriate antibiotic use among Qatar University students and their family members, detect sociodemographic factors associated with inappropriate use, evaluate the knowledge and attitude towards antibiotic use, and assess respondents' opinions on healthcare providers' antibiotic prescription practices. Participants (N = 596) completed a self-administered questionnaire. Descriptive analysis, the Pearson chi-squared test, and multivariate logistic regression analyses were performed.

RESULTS

The major inappropriate antibiotic use practices followed by the respondents were using antibiotics without prescription (82%), not completing the antibiotic course (45%), and obtaining antibiotics from the pharmacy without prescription (23%). The chi-square test results showed that age (p = 0.031) and nationality (p = 0.041) were associated with using antibiotics without prescription. In addition, respondents less than 21 years of age (p<0.001), who had only a secondary education (p = 0.007), and who lived in one of the large and crowded cities in Qatar (p = 0.011) had higher odds of stopping the antibiotic before completing the course. Our study also revealed that almost 60% of the respondents had inadequate knowledge and a negative attitude towards antibiotic use. Nationality and municipality were the independent factors associated with having appropriate knowledge of antibiotic use. Univariate logistic regression analyses in our study demonstrated that older (>26 years), married and university-graduated participants were more likely to have a positive attitude towards antibiotic use than others. Respondents also reported that neither doctors nor pharmacists were providing adequate patient education about appropriate antibiotic use. The Socio-Ecological Model was applied to interpret the findings and frame implications.

CONCLUSION

The findings shed light on various factors shaping antibiotic use practices and provide evidence to design multilevel behavioral interventions to improve public practices of antibiotic use.

Knowledge, Attitudes And Practices Regarding The Use Of Antibiotics. Study On The General Population Of Mureş County, Romania

BACKGROUND

Currently, antibiotic resistance is a complex issue that affects the whole of society. This resistance is influenced by the irrational and excessive use of antibiotics by the general population. This study aimed to gather information about the knowledge, attitudes and behaviours regarding the issues related to antibiotic consumption in the general population of Mureș County in the Central Region of Romania.

METHODS

This was a cross-sectional study using a questionnaire as its research instrument, which consisted of 33 questions analysing the respondents' attitude and their knowledge about the use of antibiotics and antibiotic resistance.

RESULTS

A total of 996 respondents were eligible for the study. Of the total respondents, 62.65% (624 respondents) considered that antibiotics are used to treat a bacterial infection and 61.45% (612 respondents) used an antibiotic at least once in the previous year, with a distribution of 68.7% and 56.8% of the respondents from rural and urban areas, respectively. Antibiotics were taken by 10.34% of the respondents, following recommendations from family/friends, and 22.9% used antibiotics left over from their last prescription. Of those who consumed antibiotics (868 respondents), 65.9% consulted their physician every time before taking the medication. Furthermore, 82.3% of the total of 996 respondents considered that the use of non-prescription antibiotics has a negative effect, and 85.14% had heard about the antibiotic resistance of bacteria.

CONCLUSION

The majority of respondents had adequate knowledge of antibiotics and their use and were aware of the fact that non-prescription antibiotics can have repercussions both on them as individuals and on the population as a whole.