Iranian Journal of

Background and Objective: Municipal waste transfer stations (WTS), operate as middle elements in waste collection and transfer to the final disposal site. Besides their benefits in waste transportation cost reduction, WTS can cause negative environmental impacts such as noise, air, and water pollution. Environmental impact assessment is an effective solution to reduce the environmental impacts of WTS. This research was conducted at evaluating the environmental impacts of various options defined for WTS in Tehran using the Rapid Impact AssessmentMatrix (RIAM) analysis method.
Materials and Methods: This descriptive-analytical study was performed to assess the environmental impacts of WTS based on field observation and data collection. Comparing was included four options including: continue the current condition of the WTS, three other alternatives considered to be three other alternatives (WTS in open space with the construction of green space) and transfer in enclosed space and with construction of green space and without it. Finally, using the sustainability model, the stability of the options was also measured.
Results: Based on the obtained results, the fourth option (indoor loading/unloading along with establishment of green spaces in WTS) as the first priority for the Construction of transfer stations among the other options has the highest score (0.079) in terms of sustainability as well as the adverse environmental impacts. However, the current environmental status of Tehran WTS (first option) has the lowest score (-0.213) in terms of sustainability and the most destructive environmental impacts and found to be the last priority in establishment of transfer stations.
Conclusion: Combined use of the RIAM and sustainability model can be a promising and reliable way to evaluate and improve the performance of (WTS).
 

Background and Objective: In this study, we aimed to assess Iran’s position and trends for environmental health status among the countries of “Iran’s perspective document in 1404” according to the indicators used in Environmental Performance Index (EPI) report in 2018.
Materials and Methods: The score of indicators in environmental health area; air quality (including household solid fuels, exposure to PM_2.5, and PM_2.5 exceedance), water and sanitation (including drinking water and sanitation) and heavy metals (including lead) were extracted for all studied countries as well as for the last and baseline (generally ten years prior to last report) years from EPI 2018 database. According to EPI scores, the performance of the studied countries in each indicator was ranked. The percent change in the score of each indicator from baseline to current year was calculated and compared with the mean percent change for all studied countries.
Results: Iran ranked 7^th regarding air quality in 2016. Also, it ranked 6^th, 8^th, and 9^th in terms of household solid fuels, exposure to PM_2.5, and PM_2.5 exceedance, respectively. The EPI score for Iran regarding water and sanitation was 54.4 in 2005 and 58.74 in 2016 (percent change=7.98%). Iran ranked 21^st in 2005 regarding lead exposure index. Although this index showed a growth of 100% in 2016, which is very desirable compared to the average growth of all countries (34.47%), but only leads to one step up in the ranking of Iran and was ranked 20^th in comparison with other countries.
Conclusion: Totally, according to EPI 2018, Iran ranked 6^th in the field of environmental health issues among 23 countries of “Iran’s perspective document in 1404”. However, there is uncertainty in the accuracy of the EPI raw data used for calculating index scores. Hence, caution should be exercised in their interpretation.

Background and Objective: The bibliometric analysis is the most effective way to study the scientific output and trend of research. The purpose of this study is to analyze the scientific output of the Institute of Environmental Research (IER) at Tehran University of Medical Sciences using bibliometric technique.
Materials and Methods: All related IER articles that have been indexed in Scopus and WoK were retrieved from the beginning of 2009 till November 23, 2019. The bibliometric data were extracted and analyzed using R software.
Results: The document production follows an increasing exponential trend with a rate of 10% per year. 807 documents were retrieved with an average citations of 19.26 per each document. The documents per author and authors per document were obtained 0.196 and 5.1, respectively. The highest citations to documents was in 2017 (35.5 citations). The most frequent keywords were found “Adsorption”, “Drinking water”, “Air pollution”, “Particulate matter”, “Risk assessment” and “Response surface methodology”. Thus, engineering-based studies are more prominent in the published studies. Health-based studies, including risk assessment studies, accounted for the most area of research. The largest numbers of international research collaboration were recorded with the United States, Switzerland, Canada and India. While, in the national scale, Shahid Beheshti University of Medical Sciences’ collaboration was prominent.
Conclusion: It is still necessary to promote the level of the IER’s international collaborations to raise its regional status. In addition, more attention should be paid to health-based topics like risk assessment studies. These studies need to be given higher priority in the action plan of the IER’s centers and research groups.

Background and Objective: Improper treatment of PAHs in oily drilling cuttings cause adverse effects on the environment. The present study aimed to investigate the efficiency of two bioremediation and fixation methods for PAHs removal from oily drilling cuttings. The efficiency of the two mentioned methods were analyzed and subsequentelythe more effective one was selected using environmental protection approach.
Materials and Methods: The sampling of oily drilling cuttings at the beginning and end of the treating process was performed for the studied methods, according to standard protocols. The amounts of PAHs, are determined by Soxhlet apparatus and gas chromatography-mass spectrometery.
Results: The results showed that the removal efficiency of PAHs from oily drilling cuttings was 97% (440.3 mg/kg) for bioremediation and 78% (354.7 mg/kg) for the fixation method, respectively. The findings showed that the bioremediation method provides the standard requirements for the discharge of PAHs to the environment.
Conclusion: Bioremediation is more effective than the fixation method for removing PAHs compounds and exhibits higher environmental protection performance.

Background and Objective: Due to the increasing trend of municipal solid waste (MSW) production, if a suitable management system is not applied, it will lead to environmental pollution and endanger human health. The aim of this study was to compare different scenarios of waste management in Chalous city with life cycle assessment (LCA) approach and to select the most efficient method in terms of environmental adaptation.
Materials and Methods: After investigation of the quantitative and qualitative characterization of the produced wastes and the current waste disposal method in Chalous city, the obtained results were used to evaluate the life cycle of six different waste management scenarios; including the combination of four methods of composting, recycling, incineration along with energy extraction and sanitary landfilling. Emissions from various scenarios were assessed using IWM-2 model.
Results: The current system of municipal waste management in Chalus (scenario 1) with ecological index of 1.73+06 poses the highest pollution load into the environment. The inclusion of compost disposal methods in the organic waste sector and recycling of biodegradable materials significantly reduces the emissions of environmental pollutants by increasing the amount of materials for recycling and reuse, as well as preventing emissions from raw material production. The fifth scenario (60% compost, 30% recycling and 10% sanitary landfill) with ecological index of -2.00+05 was known as the lowest contamination scenario.
Conclusion: Considering that a high percentage of Chalous municipal solid waste composition is perishable materials (organic waste), simultaneous application of composting and recycling methods can be a suitable option for optimal management of wastes in Chalous city and play an important role in reducing the environmental pollution load.

Background and Objective: The most important first step in promoting environmental performance is identifying and evaluating environmental behavior. In this regard the measuring tool is considered an environmental behavior questionnaire. Validity and reliability of the questionnaire before its application is essential. Thus this research was conducted with the aim of assessing the validity and reliability of questionnaires.
Materials and Methods: The environmental behavior questionnaire containing 36 questions was designed using the literature review and expert panel opinions. Then, the validity of the questionnaire was assessed by content validity index (CVI) and content validity ratio (CVR) and its reliability was evaluated using Cronbach's alpha coefficient by 14 experts and 40 target groups. Finally, data were analyzed by SPSS 20 software.
Results: The results showed that the questionnaire with 36 items had CVI and CVR of 0.896 and 0.726, respectively, and 4 items should be excluded from the questionnaire due to non-compliance with content validity indices. The questionnaire exhibited high internal consistency and hence was acceptable owing to the Cronbach's alpha coefficient of 0.85.
Conclusion: The questionnaire was designed to evaluate environmental performance of citizens and can be cited in future studies.

Background and Objective: Dolochar is the residual ash from the production of sponge iron in the process of direct reduction of iron ore by the coal-based method. In Iran, this waste is transported to the nearest landfill. However, these methods are a major environmental concern due to the fineness of the waste and the presence of heavy metals in its composition. The aim of the present study is to investigate the methods of reusing dolochar in order to solve the environmental problem and further use it as auxiliary materials in applications such as road construction and wastewater treatment.
Materials and Methods: In depth investigation of the word “Dolochar” in Science Direct, SID, and MagIran databases showed that there is no long history of reusing it. Only 14 English articles were found, all of which were used in research; Therefore, the present article deals with the issue of reusing Dolochar in Iran for the first time.
Results: By reviewing previous studies, reuse of Dolochar has been classified into five sections. Dolochar use in wastewater treatment (removal of copper, chromium, paint, phosphate, nitrate, surfactant), removal of chromium from mine effluent (more than 94%), as a synthesis gas, as a filter medium (three times better than sand filters) and it is also used in construction and road construction (alternatives to aggregates).
Conclusion: The high capacity of Dolochar in waste absorption and wastewater treatment shows that it is necessary to reuse it in Iran instead of burying or leaving it in the environment.

Background and Objective: By accurately identifying environmental issues, individuals can acquire skills to better solve environmental problems. To this end, the most appropriate method is to assess the educational needs of individuals to pave the way for the promotion of environmental knowledge. The present study aims to assess the need for training courses to empower professionals to increase their knowledge of environmental issues and educate others to take an important step in improving environmental health in society.
Materials and Methods: The present study was a descriptive needs assessment study using Delphi technique. In the first stage, the designed questionnaire was given to 150 people (faculty members, experts and students) to express their opinions in the proposed areas. In the second stage, a supplementary questionnaire entitled General needs for faculty members, specialized needs for experts and general and specialized needs for students were provided to individuals and the importance of the issues from their point of view was examined. Finally, the most important issues were prioritized by experts. Data analysis was performed using SPSS-26 software.
Results: The total number of educational needs extracted from the first stage of Delphi was 120 items, of which 31 items related to general needs (11 teaching and evaluation areas, 10 research areas and 10 communication and personal development items) and 89 items related to specialized needs. (27 cases of air pollution, 23 cases of waste management, 17 cases of wastewater treatment and reuse of wastewater, 10 cases of water treatment and pollution and 12 cases of soil pollution and its removal methods). In the second and third rounds, the importance of these items was determined by the target groups by scoring, and at the end, the first five priorities of each item were identified.
Conclusion: The results of this study, considering the comprehensive review of three target groups and determining and prioritizing the needs for each group, can increase the level of environmental awareness and empowerment of experts, which ultimately enhance the efficiency of the system and is an important step for environmental educational planning.

Background and Objective: Outsourcing services to the private sector can be a step towards achieving the goals of community health promotion, job creation, better access to health services, and improving the quality of health services. In this regard, health service offices were established in Tehran to improve the health status of food preparation, distribution and sale centers and increase food safety based on government approval. This study aimed to evaluate the roles of health services offices on environmental health indicators. 
Materials and Methods: In this descriptive-comparative study, nine health service offices supervised by Tehran University of Medical Sciences (located in South Tehran Health Center, Eslamshahr city, and Shahr-e Rey) were surveyed. Seven environmental health indicators measured in the years before the establishment of these Health Service Offices (2015-2017) were compared with those obtained after their establishment (2018-2019). The indicators data were analyzed using Excel, SPSS software, and statistical tests.
Results: The result showed no significant difference in public places and centers for food preparation and distribution offenders, public places with health criteria, percentage of employees with a health training certificate, health care, and percentage of inspection coverage before and after establishment of health service offices (p >0.05). However, the relationship between the food preparation indicators and distribution centers with health criteria and public places and closed food preparation and distribution centers were significant (p > 0.05).
Conclusion: This study is one of the first researches conducted to evaluate the effectiveness of health services offices on health-safety indicators in Iran. Therefore, more comprehensive monitoring and studies should be done to evaluate these offices' performance quality and their related cost-benefit analysis.
 

Background and Objective: Nowadays, in metropolitan areas, principled and hygienic waste management is very important. Recycling is one of the most appropriate options in waste management. Hereof, the present study was aimed to investigate the possibility of using textile waste fibers in the manufacture of Medium Density Fiberboard (MDF).
Materials and Methods: This experimental study was performed on lab-scale. Fabric waste was prepared by separation method at source from a clothing manufacturer in Tehran and converted into fibers. Test boards were made with weight percentage of mixing textile waste fibers to industrial fibers at three levels of 0:100, 10:90 and 15:85, respectively, 10% urea-formaldehyde adhesive, with 16 mm thickness and 0.7 g/cm³ density by hot press. Then, properties of the boards were measured including bending strength, modulus of elasticity, internal bond, hardness, water absorption and thickness swelling. The results were analyzed with ANOVA test.
Results: The results of ANOVA showed that the effect of textile waste fibers on the bending strength, modulus of elasticity and swelling thickness of 2 and 24 hours of boards made at 5% probability level was significant. Additionally, the highest values of physical and mechanical properties are related to made boards with 10% of textile waste fibers.
Conclusion: The results showed that it is possible to make MDF with textile waste fibers. The use of wastes such as fabrics in the production of new functional products can be considered as one of the strategies to reduce waste and thus to maintain human health and the environment.
 

Background and Objective: Increasing the level of health awareness of food preparation and distribution staff can have a direct impact on improving the level of public health in the community. Education can change people's knowledge, attitudes, and practices. Health education courses that provide integrated education as well as to other education systems, include educational inputs, processes, and outputs. The objective of this research is to evaluate these elements of the educational system of health education courses in Shiraz.
Materials and Methods: The current study evaluated the educational input, process, and output of 7 current health education institutions in Shiraz. Factors that influence the input of educational courses were evaluated using an inspection checklist of health education courses, the educational process was measured employing a satisfaction survey, and the educational output was assessed through a checklist of inspection of Article 13 of the Regulations. The health performance of 160 guild health certified units and 160 uncertified education units was analyzed as a criterion for effectiveness. Data were analyzed using the IBM SPSS21 software. Data related to the assessment of the input and educational process were analyzed using the Spearman correlation coefficient. Mann-Whitney and Kruskal-Wallis non-parametric statistical tests were also used for cross-group comparisons of output evaluation data.
Results: The findings of the educational input evaluation showed a strong correlation and a significant relationship between the overall evaluation score of the educational courses and the "observation" (0.96) "educational course principal" (0.94). Also, in the process evaluation, the "educational environment" and "general educational programs" with correlation coefficients of 0.99 and 0.84 had the most correlation with the overall process evaluation score. In all the health fields studied, there was a significant difference (p = 0.001) between the average score obtained for educational courses with and without certificates. There was a significant difference (p <0.0001) between the mean score obtained by public health with and without health certification. The average score obtained by the certified public and non-public places was 91.81 and 70.71, respectively.
Conclusion: Health education can have a major impact on people's health performance. Some of the elements that make up the educational output have a greater impact on achieving the desired educational output. For example, the revision and updating of the educational content and the development of the educational program according to all groups of learners can improve the performance of the learning process and the satisfaction of learners.
 

Background and Objective: Due to the negative effects of municipal waste, the need for proper management and selection of appropriate solutions to minimize these effects is strongly felt. One of the methods of recycling waste is preparing compost from organic materials. The purpose of this study is to evaluate the environmental impacts of the two options of implementation and non-implementation of the Karaj compost plant project.
Materials and Methods: Based on the obtained results, the project implementation was determined by gaining more points (0.181) in terms of sustainability and having the least destructive environmental effects, and the project was not implemented by gaining more points (-0.155) in terms of sustainability and having more environmentally destructive effects.
Results: Based on the obtained results, the first option (project implementation) was determined as the best option by gaining more points (0.181) in terms of sustainability and having the least destructive environmental Impacts and the second option (non-implementation of the project) was determined with a lower score (-0.155) in terms of sustainability and more environmental damage than the first option.
Conclusion: According to the research findings, the results of the rapid impact assessment matrix and sustainability model are consistent in confirming the superiority of compost plant performance over non-implementation.
 

Background and Objective: Amoxicillin (AMX) is one of the commonly used commercial antibiotics due to its high resistance to bacteria and its large spectrum against a wide variety of microorganisms, which it´s existence in the wastewater from pharmaceutical industries and hospital effluents causes unpleasant odor, skin disorder, and microbial resistance among pathogen organisms, and it can lead to the death of microorganisms which are effective in wastewater treatment. Therefore, this study was conducted to investigate of removal efficacy of AMX from aqueous solutions using GO@Fe₃O₄@CeO₂.
Materials and Methods: In this descriptive study, GO@Fe₃O₄@CeO₂ was synthesized and then used as a photocatalyst for the removal of AMX from aqueous solution. GO@Fe₃O₄@CeO₂ was characterized using X-Ray Diffraction (XRD), Scanning Electronic Microscopy (SEM), SEM-EDX elemental analysis, Fourier transform infrared spectroscopy (FTIR), and vibrating sample magnetometry (VSM) methods. Additionally, the influence of variables including pH (3-11), amount of photocatalyst (0.006-0.04 g), contact time (0-150 min), and temperature (25-55 °C) was assessed on the efficacy of AMX removal. 
Results: The results indicated that removal efficiency increased up to 90 min contact time, 0.02 g of photocatalyst, and at the temperature of 25 °C. The optimum pH for AMX removal was 10.
Conclusion: GO@Fe₃O₄@CeO₂ could be an effective and available photocatalyst for the removal of AMX from industrial wastewater under UV light.

Background and Objective: Based on its unique characteristics, oil industry wastewater must be treated before discharging into the environment. The study aimed to optimize the catalytic sonopraxone process in the treatment of petroleum wastewater using a statistical method.
Materials and Methods: The synthesis of Iron Oxide-Zinc Oxide was carried out by air oxidation and layer-by-layer self-assembly method. XRD, SEM, EDAX, FT-IR, BET, DRS, VSM and TGA techniques were used to investigate the structure. In this study, applied CCD method optimization of pH parameters, reaction time, ozone gas concentration, hydrogen peroxide concentration and catalyst amount in the process. In optimal conditions, BOD₅ and TPH removal values, reaction kinetics and synergistic effect of mechanisms were studied. COD, TPH and BOD₅ were measured by spectrophotometer (DR6000), GC-FID and incubator, respectively.
Results: The results indicated that the Fe₃O₄@ZnO structure is well formed. A quadratic model was proposed to model the process based on the correlation coefficient. Based on ANOVA analysis and p and f indices, the proposed model was reported to be significant. Optimum conditions include pH 6.4, ozone concentration 1.3 mg/L.min, hydrogen peroxide concentration 2.5 mL/L, reaction time 51 min and catalyst amount equal to 0.64 g/L. In these conditions, the amount of COD reduction was 82.3 and 70% theoretically and experimentally, respectively. Also, in optimal conditions, BOD₅ and TPH removal rates were 90.5% and 85.8%, respectively. The kinetics of the process follows the kinetics of the first order (R²=0.98) and the presence of different mechanisms together causes a synergistic effect and increases the efficiency of the process.
Conclusion: This process can improve the quality of oil effluent based on COD, BOD₅, and TPH removal.
 

Background and Objective: Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants with teratogenic, mutagenic and carcinogenic potential, which can pose potential risks to the environment and human health. Therefore, this study was conducted for the analysis of PAHs compounds content in surface soil samples of the disposal site of the wastes resulting from the activity of oil refining units (Nuruddin Abad, Garmsar) in 2022.
Materials and Methods: In this research, surface soil samples were collected from 8 sampling sites in the study area. After the extraction of analytes based on the soxhlet method, the gas chromatography/flame ionization detector (GC-FID) method was used for the determination of PAHs compounds in the samples. Statistical analysis was performed using SPSS software.
Results: The results showed that the concentrations of Naphthalene (Nap), Acenaphthene (Ace), Benzo[b]fluoranthene (BbF), Dibenz[a,h]anthracen (DBA), Benzo[g,h,i]perylene (BP) and Indeno[1,2,3‐c,d]pyren (Ind) were less than the quantification limit of the measurement method <0.01 mg/kg. total concentrations of 16 PAHs compounds ranged from 56.55 to 92.06 mg/kg.
Conclusion: The results showed that the concentrations of Acenaphthylene (Acy), Fluorene (Flu), Phenanthrene (Phen), Anthracene (Ant), Fluoranthene (Flt), Pyrene (Pyr), Chrysene (Chr), Benz[a]anthracene (BaA), Benzo[k]fluoranthene (BkF), Benzo[a]pyrene (BaP) were higher than MPC established by the Iranian Department of Environment. Also, the concentrations of Acy, Flu, Phen, Ant, Pyr, Chr, BaA, BkF, and BaP were higher than MPC established by MHWS. As the mean contents of some PAHs were higher than the MPC, therefore, periodic monitoring of soil contamination with PAHs is recommended for the environmental and human health aspects.
 

Background and Objective: Considering the significant number of injured people in spas, the main goal of this research is to provide a model for measuring and managing risk in spas.
Materials and Methods: To prepare the conceptual model of risk, four steps were taken, which include determining the general outline of the model, identifying the parameters, evaluating and scoring the parameters based on the questionnaire, using the hierarchical analysis method, and evaluating and determining the final risk of the pools. According to the allowed standard range of each parameter, five ranges for each parameter were obtained based on the obtained weights, health, safety and environmental risk classes. Finally, by summing up these parameters, the final score of the risk of using each pool is obtained. In order to evaluate the presented model, the risk value of hot mineral water pools in Ardabil province was obtained with the innovative method of this research.
Results: According to the results, according to the risk score, Gutursoi and Gamish-Goli spas have an unacceptable risk level, while Qainarjeh, Shabil, Barjelo and Sablan spas are at a high-risk level.
Conclusion: The presented model was validated with the evidence of forensic events. According to the results of the conceptual model of risk and the score obtained for each component and sub-components, appropriate solutions were presented, including the need to modify the current standards in each spa.

Background and Objective: Understanding the area of study stimulates the student. Therefore, students should pick their field of study with more information so that they get more engaged in it to complete the responsibilities assigned in the future as well as possible. The purpose of this study was to ascertain the attitude of Shiraz University of Medical Sciences environmental health students regarding their field of study and potential future careers.
Materials and Methods: This study was a cross-sectional, descriptive research study on medical education. In this study, 120 students studying environmental health engineering at Shiraz University of Medical Sciences had their attitudes and knowledge assessed using a questionnaire created by the University of Minnesota, America, and the results were then analyzed using chi-square and t-tests.
Results: According to the research's findings, more than 80% of students chose their field of study without having any prior knowledge of it, more than 90% did not place it among their top priorities, and 80% claimed that their field of study depended on whether or not their employment position is acceptable.
Conclusion: According to the data, the majority of students had an unfavorable perception about entering this field. As a result, it is necessary to thoroughly present this discipline to students before they begin studying it, as well as to update its subject headings to better meet societal demands.

Background and Objective: The current research aimed to evaluate the level of environmental knowledge, attitude, and performance of the citizens of Mazandaran province in 2021.
Materials and Methods: In a descriptive study, the level of environmental knowledge, attitude, and performance of the citizens of Mazandaran province were evaluated. The statistical population of the research (384 people) was selected by simple random method. In order to collect data, a questionnaire whose reliability was determined in previous studies was used. The collected data were analyzed using SPSS 21 software. Using Pearson's correlation test, the relationship between knowledge and environmental performance was analyzed.
Results: Among the 384 participants, only 135 answered all the questions. The results of the study showed that, despite the average knowledge of the citizens, the environmental performance is at a good level. The average score of environmental knowledge, attitude, and performance was 5.93±2.06, 47.67±9.30, and 58.70±12.69 respectively, and the most source of obtaining environmental information is television (46.7 percent) and social conversations (19.3 percent). The results of Pearson's correlation test show that there was a significant relationship between the awareness and environmental performance of citizens (p<0.05).
Conclusion: Despite the average knowledge of the citizens, their environmental performance was at a good level, but according to several reports, the Mazandaran province's environmental indicators are not in good condition, which indicates that probably mechanisms and other factors such as environmental policies and economic factors also affect people's environmental performance, which should be investigated.

Background and Objective: Due to the presence of infectious diseases and parasitic contamination in kindergartens, it is very important to observe the health points in these centers. This cross-sectional analytical study was conducted to investigate the environmental health status of Saveh kindergartens in 2020.
Materials and Methods: A checklist with 133 questions was designed, including 57 questions specific to the conditions of the coronavirus, taken from the instructions for the second step of the fight against the coronavirus and 76 questions from regulation 150/920318. All active kindergartens (9 cases) in the study were included, and the answers to the questions as yes, no, and not applicable were recorded and using SPSS software, independent T, chi-square, and one-way ANOVA was analyzed.
Results: The results obtained from the analysis of the checklist showed that the compliance of the health status of all kinds of kindergartens with the regulations of 150/920318 has a percentage of total desirability that includes personal hygiene (81/4%), food hygiene (63%), tools and equipment hygiene (66/5%), building hygiene (78%), health education (90%), considerations regarding disinfectants and disinfectants based on alcohol (92%) and considerations regarding bleaches (94%). There was no significant relationship between the per capita of each child and the different items on the checklist (p>0/05).
Conclusion: This study showed that the general environmental health status of kindergartens in Saveh was favorable and only two variables of hygiene of tools and equipment (66/5%) and food hygiene (63%) were the least desirable among the studied factors that should be considered.