Showing 9 results for Shiri
R Chaman, A Shamshiri, K Kamali, Ghr Khalili, K Holakouie Naieni,
Volume 2, Issue 1 (23 2006)
Abstract
Background & Objectives: This investigation was prompted by the growing importance of nested case-control studies and the increasing frequency with which they are done in epidemiologic research. After a brief explanation of nested case-control studies, we evaluate the trends in research methodology over the last decade, especially with regard to cohort, case-control, and nested case-control designs.
Methods: Data for this study were extracted from the PubMed database, using these keywords: Nested Case-Control, Risk-Set Sampling and Density Sampling. The search was confined to the 10-year period from 1996 to the end of 2005. As for other methodologies, we used keywords Cohort and Case-Control for a search over the same time period. The search itself was performed on April 25, 2006.
Results: We found 2011 articles reporting nested case-control studies. There were 95 such articles in 1996 the number had increased to 289 in 2005. Case-control and cohort designs accounted for 68456 and 60479 articles, respectively.
The number of case-control articles rose from 4378 in 1996 to 10270 in 2005, while that of cohort articles increased from 2981 to 9771 over the same period.
Conclusions: The number of cohort and nested case-control articles followed similar upward trends over the last decade and their rate of increase was greater than that of simple case-control articles.
Ar Baghestani, A Teymourpour, Y Bashiri,
Volume 11, Issue 1 (Vol 11, No 1 2015)
Abstract
Background & Objectives: In the analysis of mortality trend in the Iran that is basically a sequences of observations sorted by time, there is a point where the statistical properties of the mortality trend change so that the first k0 observations have a distribution of F0 and other n-k0 observations have a distribution of F1. The point k0 is unknown and called the change point. The aim of this paper was to detect the location of the change point and estimate it in the real mortality data of the country.
Methods: In this study, Xt indicated the number of mortality in time t (year) and because of the numeric nature of the variable, we considered the Poisson model for the variable Xt.
We assumed in early years (t0), Xt had a Poisson distribution with a mean of ʎ0 and for later years (t>k0), Xt had a Poisson distribution with a mean of ʎ1 .In theory, we used the MIC method, a modification of the SIC method. For detecting more than one change point, we used the binary segmentation process in the mortality trend.
Results: The results showed that the change point occurred in 1993 and 1997.
Conclusion: The finding of this study showed three periods with different rates in the mortality trend of Iran.
A Nikfarjam, Ar Shamshiri, Z Hasanpour, M Khalili,
Volume 11, Issue 4 (Vol 11, No.4, Winter 2016 2016)
Abstract
Background and Objectives: Children immunization program is one of the most successful and most cost-effective public health interventions and medical programs. The study was designed and conducted in order to assess the vaccination coverage in areas covered by Tehran University of Medical Sciences (TUMS).
Methods: This study was a cross-sectional study of children aged 24 months to 6 years living in urban areas and high-risk and marginal areas covered by TUMS. Six hundred and thirty children were sampled in 90 clusters in urban areas and cluster sampling as probability proportional to size sampling was performed in high risk areas and a sample size of 768 children was determined. The questionnaires were completed by interview.
Results: In high risk 750 children (97.7%, 95% CI: 96.32-98.60%) and 616 children (97.8%, 95% CI: 96.3-98.78%) in urban areas had complete immunization histories. Furthermore, 98.4% of the Iranian children and 95.0% of foreign children (P=0.019) in marginal areas and 98.1% of the Iranian children and 92.1% of the foreign children (P=0.046) in urban areas had complete immunization histories.Ignorance of immunization program (%50) was addressed as the main reason for incomplete immunization.
Conclusion: Universal mass vaccination coverage of the children and equal coverage in marginal and urban areas indicated the success of the authorities in the implementation of this program. Organizing training courses for mothers on the immunization program, providing the required facilities and services, monitoring and supervision of vaccination and also considering the immunization status of foreign children seem to be essential in maintaining and improving the existing status.
P Shiri, H Soori, A Razzaghi,
Volume 14, Issue 3 (Vol.14, No.3, 2018)
Abstract
Background and Objectives: Human errors are the most important factors for RTIs, which have been addressed in few quantitative studies. The objective of this study was to calculate the annual population attributable fraction (PAF) of the most important human risk factor for RTIs in the streets and highways of the Great Tehran.
Methods: In this study, the data of 124518 individuals registered in the COM114 form of the Police Information and Communication Technology (ICT- FAVA) data system of the country were employed in 2014. A regression model was applied to estimate the magnitude of the impact of traffic violations of drivers with RTIs using the adjusted relative risk ratio. To estimate the PAF, the prevalence and effect size were calculated based on the risk ratio (RR) using the baseline method or the Miettinen formula.
Results: The PAF of driving in reverse gear and failure to observe safe distance was 1.98% and 1.93%, respectively. Driving in the reverse gear and failure to observe the safe distance increased RTIs by 22% and 23%, respectively. On the highways of the Great Tehran, the largest proportion of PAF was related to driving in reverse gear (1.96%), sudden movement of the car (1.90%), speeding (1.87%). Speeding increased the risk of RTIs by 23%.
Conclusion: Monitoring traffic violations can decrease road crashes by 10% in the streets. Moreover, on highways, use of strategies to prevent traffic violations can decrease RTIs by up to 15%.
Z Cheraghi, H Mahjub, A Ghalehiha, S Bashirian, H Tayybeenia, A Rahmani, B Naghsh Tabrizi , N Shir Mohammadi , A Farhadi, M Asgarinia, M Karami,
Volume 14, Issue 4 (Vol.14, No.4, 2019)
Abstract
Background and Objectives: Prioritizing the list of required research, taking into account the real needs and problems of the health sector, provides a ground for justice; strengthens the link between research, action, and policy; and addresses the needs of vulnerable groups. The present study was done to formulate research priorities of Hamadan University of Medical Sciences using the opinions of experts in the field of health as a positive step towards proper allocation of research resources of the University to solve the problem.
Methods: In this study, the research priorities of Hamadan University of Medical Sciences in 13 domains during 2017 were ranked using 10 standard criteria according to the Essential National Health Research (ENHR) approach.
Results: Forty inter and intra beneficiaries were participated in this study. During the sessions, using group training techniques (brain storming), the topics were discussed, resulting in identifying 122 topics in 13 domains. In each of these domains, top 10 topics with the highest ranks were determined as the research priorities of Hamadan University of Medical Sciences.
Conclusion: Determination of research priorities at a provincial level based on the ENHR approach was conducted in Hamadan University of Medical Sciences with the cooperation of all health stakeholders for the first time. The result of this study will play an important role in optimum use of resources of the research and technology domain of Hamadan University of Medical Sciences by directing research projects according to the identified priorities.
M Etemadi, A Olyaeemanseh, Mm Tadayon, E Rostami, M Shiri, Aa Fazaeli , Mj Kabir, A Mehrabi Bahar, A Vosough Moghadam ,
Volume 16, Issue 1 (Vol.16, No.1 2020)
Abstract
Background and Objectives: The study aimed to analysis the psychometric properties of the health system resilience scale, assessing it and to introduce a conceptual model for qualitative analysis of Iran health system in the face of the civid-19 crisis.
Methods: In this Mixed-method study, the determination of face and content validity was performed using 8 experts. The structure validity was investigated in a cross-sectional study through an electronic survey of 178 actors in the Iran health system. Resilience has been assessed in five dimensions using 5point Likert scale.
Results: The percentage mean score of the Iranian health system resilience in the face of the Covid19 crisis was 41/08 and in the moderate level. The percentage mean score (standard deviation) for 5 dimension include awareness 39/2 (21), diversity 38/7 (21), self-regulation 36 (20/6), integration 39/9 (21/5) and adaptation 41/2 (21/8). Confirmatory factor analysis indicated the appropriate fit of the information with the five-component structure.
Conclusion: The maximum score of resilience dimension belongs to adaptation and the lowest to the self-regulation indicating that it requires interventions to involve the private sector, and to design a new delivery system for crisis situations. The questionnaire can be used as a standard instrument for assessing the health system resilience.
M Karami, S Khazaei, F Shahbazi, M Mirzaei, A Biglarkhani, A Ataei, Seyed Jalalodin Bathaei, A Zahiri, M Shojaeyan, R Zamani, Ae Karshenas, F Heeders-Moghis, K Hamelmann, R Heidari Moghadam, I Khodadadi-Kahlan, S Bashirian, F Keramat, Sh Hashemi, E Jalili, F Azizi-Jalilian,
Volume 17, Issue 3 (Vol 17,No.3, Atumn 2021 2021)
Abstract
Background and Objectives: The aim of this study was to investigate the epidemiological characteristics of patients with Covid-19 in Hamadan Province.
Materials and Methods: In this descriptive cross-sectional study, demographic and epidemiological data of all people who presented to hospitals in Hamadan Province from February 2019 to December 2020 were extracted using two checklists. Data were then analyzed using the Stata software.
Results: In this study, 9674 covid-19 positive patients were examined. According to results, 49.11% of the cases occurred in the elderly over 60 years. The rate of involvement was higher in females than males (51.57% vs. 48.43%). Moreover, 72.05% of the definitive patients lived in the city and 0.76% reported traveling to areas with a high prevalence of the disease two weeks before the onset of symptoms. The highest incidence of this disease per one hundred thousand population was in Malayer, Hamedan and Nahavand counties and the highest fetality was in Razan and Dargazin, Tuyserkan and Asadabad counties, respectively. The data of suspected, probable, and definite outpatients with Covid-19 presenting to medical centers were not evaluated in this study.
Conclusion: Due to the high death rate in the elderly, males, those with underlying diseases, and people living in rural areas, it is necessary to design and apply precautionary measures in these groups. Attention should be paid to these high-risk groups in the shortest possible time to reduce the burden of this disease on individuals as well as the health care system.
Ali Hasanabadi, Shirin Nasri, Elaheh Salarpour, Naser Nasiri, Hamid Sharifi,
Volume 18, Issue 3 (Vol.18, No.3, Autumn 2022)
Abstract
Background and Objectives: Screening for home contact with TB patients is essential to identify new infections. This study aimed to evaluate the tuberculosis status in family members of patients with pulmonary tuberculosis in Bam.
Methods: This cross-sectional study was conducted as a census of patients' family members whose records are registered during 2013-2019 in Bam Health Center. Patients' information was collected based on a checklist, and then sputum smear-positive patients were identified using tuberculin and sputum smear tests.
Results: Ninety-seven of the patients had a positive sputum smear test result. Based on the records of these patients, 237 members of their families were examined as contact persons. Most of the patients were female and in the age group of 40-50 years; 76.8% of them had unprotected close contact, and 78.9% had a history of permanent contact with patients. Five (2.1%; 95% confidence intervals: 0.7-4.9) sputum-positive smear pulmonary tuberculosis cases were found in contacts of patients, most of them were over 50 years old and primarily women. 40% of these people had unprotected close contact, and 80% had a house with less than 70 square meters.
Conclusion: in this study, 2.0% of the family members of patients were sputum smear-positive. Identifying patients and following them up is essential to prevent the spread of tuberculosis in those people around them. Therefore, screening the patient's family members can significantly help ease the disease burden in Iran.
Faezeh Joghataei, Payam Roshanfekr, Meroe Vameghi, Zahra Jorjoran Shushtari, Neda Soleimanvandiazar, Peimaneh Shirin Bayan, Gholamreza Ghaedamini Harouni,
Volume 19, Issue 4 (Vol.19, No.4, Winter 2024)
Abstract
Background and Objectives: Rapid Assessment and Response (RAR) is an approach that has been used in health research since the 1990s, and several guidelines have been designed for it. This study examines and compares different guidelines in this field.
Methods: This review study was conducted on the 6 guidelines published in PubMed and Scopus databases. After the initial review, the main dimensions of these guidelines, including the definition and target group, methods used, steps to conduct the research, and time planning were extracted in the form of a comparative table.
Results: In six guidelines, the RAR approach has been defined in relation to the comprehensive and rapid investigation of a health-related problem. There are differences in terms of the number of 'steps' of rapid assessment and response, as well as in 'time planning'; a period of 12 to 16 weeks is considered. Among the methods used in the reviewed guides, the following can be mentioned: reviewing available information, conducting interviews (open, structured, and semi-structured), focused group discussions, and other methods such as observation, surveys, narrative methods, and mapping.
Conclusion: The rapid assessment and response (RAR) can be used as an approach, with high flexibility and consideration of scientific and practical aspects, to assess health problems and high-risk behaviors in hard-to-reach groups.
