JOURNAL OF SCHOOL OF PUBLIC HEALTH AND INSTITUTE OF PUBLIC HEALTH RESEARCH
Year:2011 | Volume:9 | Issue:1|Papers Count:9

Background and Aim: Determining the degree of conformity of respirator cartridges with the accepted standards is very important for ensuring their respiratory protection efficiency. The aim of this study was to determine the degree of conformity of organic vapor-respirator cartridges used in different petrochemical companies with the EN 14387:2004 standard.Materials and Methods: In the first phase of the study, the respirator cartridges used in petrochemical complexes were identified and their specifications obtained from their manufacturers and the relevant technical catalogues. In the second phase, 3 samples of each of the cartridge models were chosen and tested according to the EN 14387:2004 standard. An instrument was especially designed for measuring the breakthrough time of the cartridges. Results: The results showed that the minimum and maximum breakthrough times of cartridges were 29 and 142 minutes, respectively. From all the 10 different cartridge models tested, one had a service life of lower than the minimum standard breakthrough time of 70 minutes.Conclusion: Considering the existence of a non-standard type of cartridge among the samples studied, it is essential to launch a program aiming at ensuring the conformity of cartridge efficiency with the respective standards. Such a program should be developed and implemented by such responsible organizations as the Institute of Standard and Industrial Research of Iran and the Center for Occupational Health and Safety Research and Training of Iran.

Background and Aim: Considering the social and cultural characteristics of Iranian adolescents, none of the quantitative instruments designed so far to assess their health needs is quite appropriate. The purpose of this study was to design a valid and reliable questionnaire to assess the health needs of Iranian adolescent females.Materials and Methods: Both qualitative and quantitative approaches to instrument development were adopted in this study conducted in the District of Sari in the north of Iran. Sampling was objective-based, with an attempt to have female adolescent sample as varied as possible. In the qualitative phase, a content analysis approach was used to explore the concept of health needs as seen by female adolescents. Data were collected using 8 focus group discussions (FGDs) with the presence 6-10 adolescents 12-18 years old in each FGD, as well as 11 semi-structured interviews, each one involving 11 well-informed individuals. In the quantitative phase, the psychometric properties, including content validity, face validity, construct validity, concurrent validity, internal consistency, and test-retest reliability, were determined.Results: Five themes were identified in the qualitative phase of study, including psycho-emotional health, social health, physical health, and educational needs, as well as spiritual beliefs. The mean scale-level content validity index (S-CVI) was found to be 0.92. The factor structure of the instrument was identified by doing a Principal Component Analysis. Five factors were extracted with a total variance account of 45.37%. The reliability and consistency of the instrument were established with the Cronbach's alpha coefficient (0.90) for the entire scale and test-retest reliability with a 2 week-interval Intraclass Correlation Coefficient (ICC=0.984, p<0.001).There was a concurrent correlation between the instrument and Pediatric Quality of Life Inventory (PedsQL TM 4.0) (r=0.66, p<0.001).Conclusion: The instrument developed in this study is a valid, reliable and culturally appropriate instrument for assessment of health needs of Iranian adolescent females.

Background and Aim: Safety climate is a psychological phenomenon and a sub-component of safety culture, which is usually reflected in the shared workforce's perceptions about the state of safety at any particular time. It can provide an indication of the priority of safety in an organization with regard to other priorities such as production or quality. The objective of this study was to assess the safety climate profile in a steel manufacturing plant in Iran and using the results to improve the level of safety. Materials and Methods: In this cross-sectional study, the UK Loughborough University Safety Climate Assessment Toolkit was used to assess the safety climate in a steel-manufacturing industry in Iran. Information was collected through interviews and questionnaires, focus group discussions, and direct observations in the filed. Safety climate scores were calculated in 17 themes.Results: A graphic representation of the safety climate scores obtained showed that safety climate in the company is at the medium level (4.80±2). The highest and lowest scores were for dimensions of personal priority and need for safety (8.6±0.8) and accidents and incidents (1±0.00). A non-significant correlation was found between worker's education and work experience on the one hand and their attitude towards safety on the other hand (p>0.05). Both management commitment and personal priority were associated with the workers' age (p=0.03 and 0.02, respectively), while work environment was associated only with employment status (p=0.04). Conclusion: Safety climate assessment can be a proactive safety performance indicator used to improve the level of safety in an organisation.

Background and Aim: There is evidence that physical activity declines during adolescence in Western countries. However, this pattern has not yet been shown in Iranian youth. The purpose of this study was to detect changes in physical activity behaviors, psychological factors (including perceived benefits, barriers, and self-efficacy), and interpersonal influences associated with exercise behavior during the transition from secondary school to high school in Sanandaj, Iran.Materials and Methods: The data on a group of high school students in Sanadaj were collected in a cross-sectional study in 2006, with a follow-up in 2009. The study population in 2009 included 844 students (51% males and 49% females) with a mean age of 16.42±1.73 years. Data on physical activity-related perceived benefits, barriers, self-efficacy, and interpersonal influences, as well as physical activity behavior, was collected, using self-reporting questionnaires. The SPSS-16 software was used for data analysis. Results: The test of time effects indicated significant differences between the 2 sexes as regards physical activity and most of the psychological variables and interpersonal influences associated with exercise activities. The girls had less physical activity than boys at both time points. The duration of moderate physical activity at the first time point was 31.82 and 53.75 minutes for girls and boys, respectively, the corresponding values at the follow-up were 23.7 and 44.7 minutes. Girls had lower self-efficacy and fewer perceived benefits and more perceived barriers for physical activity over time. The correlation test indicated more stability of family interpersonal influences for girls than for boys.Conclusion: The results of this study provide evidence for decreased physical activity in boys and girls and sex differences in cognitive variables and interpersonal influences.

Background and Aim: Wearing high-heeled shoes increases the height of the center of gravity and takes the line of gravity away from the center of the base of support. This may result in the loss of body balance. In this study the effect of 3 heel heights on the static and dynamic postural stability in healthy young women was investigated.Materials and Methods: In this cross-over quasi-experimental study with repeated measures, three dynamic indices of anteroposterior, mediolateral, and overall stability were determined using Biodex stabilometer and static stability using a modified CTSIB test. The measurements were made at 4 conditions of the feet, i.e., barefoot, and wearing shoes with a heel height of 3, 5, or 7 centimeters.Results: The mean static stability index in the barefoot condition was significantly different from that in any the 3 conditions of wearing heels. With the eyes closed, the most unstable condition was in the case of the 7-cm heel, which caused also the most unstable dynamic condition, the differences were all statistically significant.Conclusion: The findings indicate that postural instability increases with increases in the height of shoe heels. On the whole, considering both the static and dynamic stability, the 3-cm heel can be recommended as the optimum-height heel.

Background and Aim: The objective of this study was to determine and compare the attitude of hospital staff and practice of hospital managers regarding management of conflicts in hospitals affiliated to Tehran University of Medical sciences.Materials and Methods: The participants in this cross-sectional study were 330 individuals, including 300 nurses and 30 managers, working in hospitals affiliated to Tehran university of Medical Sciences, Tehran, Iran during 2008-2009. Data were collected using a valid self-administered questionnaire containing 30 questions designed by the investigator. The SPSS software was used for data analysis.Results: The data show that 178 of the staff (59%) and 14 of the managers (47%) were of the opinion that avoidance is not utilized in conflict management. The proportions of the staff and managers believing that problem solution is not utilized in conflict management were 60% and 60%, respectively, the corresponding proportions as regards not utilizing avoidance were 178% and 14%. Furthermore, 40% of the staff and 13% of the managers thought that usually compromise is utilized in conflict management. Finally, the proportions of staff and managers who thought that in conflict management accommodation is utilized were 41% and 43%, respectively. Conclusion: The findings show that the hospital staff believes that hospital managers with an avoidance, problem solution or forcing attitude base their conflict management style accordingly, while managers more inclined to compromise do not utilize a compromising approach in practice.

Background and Aim: AIDS is a lethal disease, for which there is no treatment or any vaccine to prevent it. The injection-drug use and unprotected sexual behavior are two factors important in HIV transmission. This study was conducted to determine changes in high-risk sexual and injection-drug use behaviors associated with HIV among drug users referring to Methadone Maintenance Treatment centers in Shiraz, Iran.Materials and Methods: This before-after interventional study with no control group included drug-users (n=694) referring to all the 7 MMT centers in Shiraz, Iran in 2009. The data were collected by interviewing patients and using a questionnaire. The software used for data analysis was SPSS 15, the statistical test being the Wilcoxon test.Results: The average age of the clients was 36.5±9.5 years. Most of them were males (% 92.1) and single (% 43.1). 37.3 % of them being injection-drug users. The proportion of the injection-drug users having had at least one shared injection one week before referring to an MMT center was 23.3%, which decreased to 9.2% after one week. Analysis of the data also showed that 25.2% of the addicts had had at least one unprotected sexual contact during the previous month, the proportion decreased to 21.0% one month after referring to an MMT center. The reductions in the mean numbers of both shared injections and unprotected sexual contacts were statistically significant (p<0.001). Conclusion: Considering the effectiveness of the MMT centers in reducing risky behaviors of injection-drug users, it is essential to expand these centers at both the national and regional levels quantitatively and qualitatively and encourage drug-users to refer to them and seek help. This will help greatly in the prevention of HIV.

Background and Aim: The objective of this study was to determine the relationship between educational practice of volunteer health workers (VHWs) and preventive behavior of households (HH) under their coverage regarding cutaneous leishmaniasis (CL) based on the BASNEF model in Yazd City, IranMaterials and Methods: In this descriptive cross-sectional study, all the 60 VHWs in the CL-endemic regions in Yazd City were interviewed and completed a valid and reliable questionnaire designed by the investigator. In addition, from among the households under coverage of each one of the VHWs, 2 HHs were selected randomly and their heads were interviewed and completed the relevant questionnaire (total n=120). Data were analyzed using descriptive and inferential statistics.Results: There was a positive correlation between the knowledge and attitude of VHWs and knowledge of the households, as well as between the VHWs' behavioral intention and households' behavior. Further analysis of the data also revealed a positive correlation between the enabling factors of VHWs and the knowledge, behavioral intention, enabling factors and behaviors of families, as well as between educational behavior of VHWs and knowledge, attitude and behavior of the families.Conclusion: Volunteer health workers can potentially play an important role in case-finding, prevention and timely treatment of cutaneous leishmaniasis. However, merely promoting their awareness of the disease will not lead to improvements in their educational behavior in the community. More effective education aiming at promoting their awareness and enabling factors, as well as developing better attitude in them, will certainly result in better behavior of households and control of the disease.