Journal of research in health sciences最新文献

{"title":"Effectiveness of Integrated Trauma System Implementation on Road Traffic Fatalities and Injuries in the North of Iran Using an Interrupted Time Series Analysis.","authors":"Enayatollah Homaie Rad, Farideh Sadeghian, Zahra Ghodsi, Shahrokh Yousefzadeh-Chabok, Mohammad Hosein Ranjbar Hameghavandi, Shahriar Ghashghaee, Zahra Mohtasham-Amiri, Hamid Heidari, Gerard O'Reilly, Seyed Mohammad Ghodsi, Vafa Rahimi-Movaghar","doi":"10.34172/jrhs.2025.175","DOIUrl":"10.34172/jrhs.2025.175","url":null,"abstract":"<p><strong>Background: </strong>Integrated trauma systems (ITS) have shown potential in reducing traffic crash-related injuries and mortality, although their structure and impact can vary. This study assessed the effectiveness of ITS in Guilan, Iran. <b>Study Design:</b> A retrospective observational study.</p><p><strong>Methods: </strong>Utilizing a cross-sectional analysis, this descriptive-analytical study was conducted in Northern Iran from 2015 to 2019 to compare road traffic crash (RTC) data in Guilan (with ITS) against Mazandaran (without ITS), considering weather as a confounder. The study involved pre- and post-ITS intervention analyses to evaluate changes in RTC, injury, and mortality rates.</p><p><strong>Results: </strong>Before ITS implementation, Guilan's daily RTC mean was 38.4 (SD=16.7), which significantly decreased to 30.8 (SD=13.7) after the intervention. Conversely, in the control province of Mazandaran, the daily average number of RTCs increased from 37.29 (SD=14.1) to 42.55 (SD=16.4) post-ITS implementation in Guilan. Furthermore, the mortality rate in Guilan showed a marginal decline from 27.74 (SD=12.6) pre-ITS to 26.60 (SD=11.9) post-ITS, indicating the positive impact of the ITS. In contrast, Mazandaran demonstrated a significant increase in mortality from 32.16 (SD=14.5) to 51.75 (SD=15.7). The statistical analysis confirmed a significant reduction in mortality and injury incidence in Guilan at the time of the intervention, with a marked decrease observed post-intervention (<i>P</i><0.001).</p><p><strong>Conclusion: </strong>The findings revealed that RTC prevention is feasible in Iran, with ITS in Guilan significantly reducing RTCs, injuries, and mortalities, underscoring the importance of ongoing efforts to expand ITS components nationally.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"25 1","pages":"e00640"},"PeriodicalIF":1.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833496/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143492179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors Associated with the Incidence of Prediabetes in Bogor, Indonesia: A Cohort Study.","authors":"Adzkia Avisena Maghfiroh, Chandrayani Simanjorang, Ulya Qoulan Karima","doi":"10.34172/jrhs.2025.170","DOIUrl":"10.34172/jrhs.2025.170","url":null,"abstract":"<p><strong>Background: </strong>Prediabetes is a golden period because the blood sugar levels can be lowered to normal levels, unlike diabetes mellitus. Studies on risk factors of prediabetes in Indonesia have never been conducted before, especially with cohort study design. The purpose of this study was to identify risk factors associated with prediabetes in Indonesia based on a cohort study conducted in Bogor, Indonesia. <b>Study Design:</b> A retrospective cohort study.</p><p><strong>Methods: </strong>This study was conducted using data from the Bogor Cohort Study done by the Ministry of Health of Indonesia, which included individuals aged more than 25 years. Individuals who had impaired fasting glucose (IFG) (100-125 mg/dL) and/or impaired glucose tolerance (IGT) (140-199 mg/dL) at baseline screening were excluded from the study. Demographic characteristics, risk factors, and clinical observations were extracted using a questionnaire. Cox regression was used for data analysis.</p><p><strong>Results: </strong>The cumulative incidence of prediabetes in Bogor was 50.3%. Factors associated with prediabetes were old age (RR: 1.33; 95% CI 1.19, 1.47), female gender (RR: 1.32; 95% CI 1.18, 1.48), overweight (RR: 1.17; 95% CI 1.01, 1.36), obesity (RR: 1.26; 95% CI 1.08, 1.46), central obesity (RR: 1.17; 95% CI 1.02, 1.34), high cholesterol levels (RR: 1.11; 95% CI 1.00, 1.22), and hypertension (RR: 1.27; 95% CI 1.14, 1.42).</p><p><strong>Conclusion: </strong>Age is a dominant risk factor for prediabetes. Therefore, it is important to stick to a healthy lifestyle by doing more physical activities and maintaining a balanced diet since young age to prevent prediabetes.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"25 1","pages":"e00635"},"PeriodicalIF":1.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833500/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143492195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How Sociodemographic, Water, and Sanitation Factors Influence Diarrhea in Children Under Five: Insights from Indonesia's Underdeveloped Regions.","authors":"Sailent Rizki Sari Simaremare, Basuki Rachmat, Wahyu Pudji Nugraheni, Debri Rizki Faisal, Muhammad Nirwan, Mara Ipa, Tities Puspita, Dea Anita Ariani Kurniasih, Felly Philipus Senewe","doi":"10.34172/jrhs.2025.171","DOIUrl":"10.34172/jrhs.2025.171","url":null,"abstract":"<p><strong>Background: </strong>Despite the decrease in prevalence from 18.5% in 2013 to 12.3% in 2018, diarrhea presents a major public health challenge in Indonesia which leads to significant mortality. This study investigated factors influencing diarrhea among children under five years of age in underdeveloped regions of Indonesia, where disparities from other regions are significant. <b>Study Design:</b> A cross-sectional study.</p><p><strong>Methods: </strong>This study obtained data from National Basic Health Research conducted in 2018. Sixty underdeveloped regions of Indonesia, with a total of 9243 children aged 0-59 months, were included. Chi-square, bivariate, and multivariate analyses were conducted to determine factors influencing the prevalence of diarrhea in children under 5 years of age.</p><p><strong>Results: </strong>Multivariate analysis revealed that the age categories of 12-23 months (OR: 1.73; 95% CI: 1.48, 2.02) and 24-35 months (OR: 1.31; 95% CI: 1.11, 1.53), awareness of a nearby hospital (OR: 0.74; 95% CI: 0.63, 0.86), and history of acute respiratory infection (ARI) in the past month (OR: 1.99; 95% CI: 1.66, 2.40) were associated with diarrhea in children under the age of five in underdeveloped regions of Indonesia. In contrast, the environmental factors analyzed further in the study were not significantly associated with the prevalence of diarrhea in children under five years of age in underdeveloped regions of Indonesia.</p><p><strong>Conclusion: </strong>These findings suggest that the child's age, the child's history of ARI, and household awareness of nearby hospitals are critical factors associated with the child's diarrhea in underdeveloped regions of Indonesia.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"25 1","pages":"e00636"},"PeriodicalIF":1.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833502/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143492396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predictors of Poor Sleep Quality in Elderly Individuals in Western Iran: A Population-Based Cross-Sectional Study.","authors":"Zahra Cheraghi, Nasrin Shirmohammadi, Razieah Ilukhani, Mojtaba Tayebi, Parvin Cheraghi, Mohadeseh Sadri","doi":"10.34172/jrhs.2025.177","DOIUrl":"10.34172/jrhs.2025.177","url":null,"abstract":"<p><strong>Background: </strong>Poor sleep quality in the elderly is a prevalent issue that can significantly impact overall health and quality of life. This study aimed to assess the prevalence of sleep disorders and the factors contributing to poor sleep quality among older adults in Western Iran. <b>Study Design:</b> This is a cross-sectional study.</p><p><strong>Methods: </strong>This study involved 403 elderly people. The following tools were employed to collect data: the Pittsburgh Sleep Quality Index (PSQI), the Leisure and Pleasure Activities Database (a quality-of-life tool), the standardized Depression, Anxiety and Stress Scale (DASS-21), and the Abbreviated Mental Test (AMT)for cognitive assessment. A backward stepwise selection method was employed to finalize the variables for multiple logistic regression analysis.</p><p><strong>Results: </strong>The overall prevalence of poor sleep quality was 44.7%. With each one-point increase in stress, the likelihood of experiencing poor sleep quality increases significantly (adjusted OR: 1.09, <i>P</i><0.001). The number of children in the household was found to have a protective effect against poor sleep quality (adjusted OR=0.63, <i>P</i>=0.008). Furthermore, elderly individuals working as housekeepers had higher odds of poor sleep quality than those employed elsewhere (adjusted OR=7.45, <i>P</i>=0.005).</p><p><strong>Conclusion: </strong>A significant association was observed between elevated stress levels and poor sleep quality. Interestingly, the presence of children in the household appeared to offer a protective effect. Conversely, individuals in household management roles faced a dramatically increased risk of poor sleep quality. These findings offer preliminary evidence for the potential effectiveness of early interventions and prevention strategies designed to improve sleep quality and reduce social frailty in the elderly.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"25 1","pages":"e00642"},"PeriodicalIF":1.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833498/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143492455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multivariate Joint Analysis of Blood Pressure Measurements and Time to Remission: A Case Study of Hypertensive Patients Receiving Treatment at Jimma University Medical Center.","authors":"Jiregna Abebe Akasa, Sisay Wondaya, Shiferaw Befikadu","doi":"10.34172/jrhs.2025.172","DOIUrl":"10.34172/jrhs.2025.172","url":null,"abstract":"<p><strong>Background: </strong>Hypertension (HTN) elevates blood pressure (BP) in the arteries. It is defined as systolic BP (SBP)>140 mm Hg and/or diastolic BP (DBP)>90 mm Hg. This study aimed to identify determinant risk factors of longitudinal change of SBP and DBP with time to first remission of hypertensive patients. <b>Study Design:</b> A retrospective cohort study.</p><p><strong>Methods: </strong>A descriptive and inferential analysis was employed to explore the determinant risk factors, and a multivariate joint model was applied to test the significant association of the possible risk factors.</p><p><strong>Results: </strong>Of all 369 patients, 235 (63.7%) had first remission with a median survival time of five months. The patients demonstrated shorter first remission time when they had no history of comorbidity, resided in urban areas, took a combination of drugs, and were younger. Similarly, residence, age, treatment, history of diabetes mellitus (DM), history of stroke, and observation time were determinant risk factors of SBP. On the other hand, age, treatment, history of DM, chronic kidney diseases, and observation time were identified as determinant risk factors of DBP. The result revealed a strong positive association between changes in SBP and DBP (<i>P</i>=0.9923). In addition, a significant association was observed between the value of SBP and time to first remission (γ_1=-0.0693, HR=0.993).</p><p><strong>Conclusion: </strong>Having good follow-ups, receiving control of comorbidity, and taking a combination of drugs show several opportunities for decreasing BP. Consequently, this compels patients to experience the first remission early.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"25 1","pages":"e00637"},"PeriodicalIF":1.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833497/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143492452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of Body Mass Index, Energy and Macronutrient Intake, and Dietary Inflammatory Index Between Type 2 Diabetic and Healthy Individuals.","authors":"Nazanin Cheloi, Zeynab Asgari, Solale Ershadi, Rozita Naseri, Amrollah Sharifi","doi":"10.34172/jrhs.2025.174","DOIUrl":"10.34172/jrhs.2025.174","url":null,"abstract":"<p><strong>Background: </strong>Type 2 diabetes mellitus (T2DM) is a chronic disorder diagnosed by elevated blood sugar. Key risk factors for T2DM include obesity, a sedentary lifestyle, and poor dietary habits. The proportion of macronutrients and the dietary inflammatory index (DII) seem to be associated with the risk of T2DM. This study aimed to assess and compare the macronutrient intake, DII, and BMI of newly diagnosed T2DM patients with healthy individuals in Kermanshah, Iran. <b>Study design:</b> This study employed a case-control design.</p><p><strong>Methods: </strong>A total of 105 newly diagnosed T2DM patients were selected as the case group, while an equal number of control participants were selected from their non-diabetic friends or neighbors. Dietary intake was assessed using a validated food frequency questionnaire. Energy, macronutrients, fatty acids intake, and DII were estimated using ShaFA software. Statistical significance was set at <i>P</i> values below 0.05.</p><p><strong>Results: </strong>The study included 105 newly diagnosed T2DM and 105 healthy individuals. Diabetic patients had significantly lower intake of protein, total fat, polyunsaturated fatty acids (PUFA), and monounsaturated fatty acids (MUFA), while their body mass index (BMI) and DII were higher. Multiple logistic regression indicated that protein, PUFA, and MUFA are protective factors for T2DM, while BMI, carbohydrates, and saturated fat intake are risk factors. A higher DII was correlated with an increased risk of T2DM risk, even after adjusting for BMI.</p><p><strong>Conclusion: </strong>Lower BMI and DII, balanced macronutrient intake, and consumption of MUFA and omega-3 fatty acids may be beneficial in preventing or delaying the onset of T2DM. Further research is needed to explore these associations in greater depth.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"25 1","pages":"e00639"},"PeriodicalIF":1.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833501/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143492063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surveillance and Control of Dengue Fever as a Global Human Treat.","authors":"Abedin Saghafipour, Mohammad Khazaei","doi":"10.34172/jrhs.2024.169","DOIUrl":"10.34172/jrhs.2024.169","url":null,"abstract":"","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"24 4","pages":"e00634"},"PeriodicalIF":1.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11492528/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142468557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Family Self-management Program for Hypertension Management and Sodium Consumption Adherence: A Parallel Randomized Control Trial Among Family Caregivers and People With Hypertension.","authors":"Tantut Susanto, Sri Hernawati, Rismawan Adi Yunanto, Ira Rahmawati, Niken Asih Laras Ati, Wahyuni Fauziah","doi":"10.34172/jrhs.2024.163","DOIUrl":"10.34172/jrhs.2024.163","url":null,"abstract":"<p><strong>Background: </strong>Hypertension (HTN) has become a serious health problem in developing countries. The family has an important role in maintaining blood pressure (BP) at home, and sodium diet compliance in people with HTN needs to be developed. Therefore, this research aimed to evaluate the effectiveness of a family self-management program (FSMP) in HTN management and compliance with sodium consumption in rural areas of Indonesia. <b>Study Design:</b> A parallel-group, single-blind randomized controlled trial.</p><p><strong>Methods: </strong>One hundred twenty-six eligible participants were randomly allocated to an intervention (n=63) and a control group (n=63). Participants in the intervention group received a 24-week (6-month) FSMP intervention. The primary outcome measures included the systolic and diastolic BP, the Score Sodium Questionnaire (SSQ), and the Morisky Medication Adherence Scale 8 (MMAS-8). The Knowledge of Health Care for HTN questionnaire and the Efficacy and Behavior Toward Health Care for Patients with HTN questionnaire were used to assess the secondary outcome.</p><p><strong>Results: </strong>The final results were analyzed from 121 participants (n=61 intervention and n=60 control group). The repeated analysis of variance (ANOVA) test results demonstrated significant effects on the management of HTN and adherence to sodium consumption as indicated by systolic (<i>P</i>=0.004) and diastolic BP (<i>P</i>=0.006), SSQ (<i>P</i><0.001), MMAS 8 (<i>P</i><0.001), caregivers' knowledge (<i>P</i><0.001), caregivers' self-efficacy (<i>P</i><0.001), and caregivers' behaviors (<i>P</i>=0.005).</p><p><strong>Conclusion: </strong>The FMSP emerges as a promising strategy for managing BP and adherence to sodium consumption in people with HTN through the support of family caregivers and selfmanagement activities.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"24 4","pages":"e00628"},"PeriodicalIF":1.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11492525/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142468544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"COVID-19 Vaccine Effectiveness of Booster Doses Against Delta and Omicron Variants Over Follow-up Times Using Longitudinal Meta-analysis.","authors":"Farideh Mostafavi, Mansour Bahardoust, Francesco Sera, Alireza Amirabadizadeh, Sepehr Allahyari, Paddy Ssentongod, Manochehr Karami, Seyed Saeed Hashemi Nazari","doi":"10.34172/jrhs.2024.161","DOIUrl":"10.34172/jrhs.2024.161","url":null,"abstract":"<p><strong>Background: </strong>COVID-19 is a viral disease caused by the <i>SARS-CoV-2</i>, leading to several variants. This study aimed to examine the effectiveness of booster doses against the Delta and Omicron variants over different follow-up times. <b>Study Design:</b> This was a longitudinal meta-analysis.</p><p><strong>Methods: </strong>Searches were performed in PubMed, Cochrane Library, Scopus, and Web of Science databases, and eighty studies were selected for investigation. The analyses were separately performed on the unvaccinated control group (UNVCG) and the complete two doses of the vaccine control group (C2DCG) against Delta and Omicron variants. Three outcomes were examined, including symptomatic infection, hospitalization, and death.</p><p><strong>Results: </strong>Vaccine effectiveness (VE) in UNVCG studies for symptomatic infection revealed a non-linear trend against Omicron with a peak of 67.3%, declining to 27.1% after 25 weeks after a booster dose. The mean of VE for hospitalization over time started to decrease after four weeks against Omicron and after eight weeks against Delta. The VE reached a peak at week eight (96.0%) and started to decline with a VE of 93.3% after 20 weeks after the booster dose against Delta. It was 90.8% at week four and decreased to 73.4% after 25 weeks after the booster dose against Omicron. VE in the C2DCG studies demonstrated more decreases in outcomes over time.</p><p><strong>Conclusion: </strong>Our findings showed a tendency to decrease effectiveness over time based on outcomes and variants. The early protection levels were lower in Omicron. Moreover, the VE decrease over time was stronger in Omicron compared to the Delta variant.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"24 4","pages":"e00626"},"PeriodicalIF":1.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11492529/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142468541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effective Reproduction Number of Smear-Positive Pulmonary Tuberculosis in Iran: A Registry-Based Study (2011-2021).","authors":"Maryam Rastegar, Vahid Fakoor, Eisa Nazar, Mahshid Nasehi, Saeed Sharafi, Mohammad Taghi Shakeri","doi":"10.34172/jrhs.2024.168","DOIUrl":"10.34172/jrhs.2024.168","url":null,"abstract":"<p><strong>Background: </strong>Tuberculosis (TB) remains a major public health issue in Iran, especially smear-positive pulmonary tuberculosis (SPPTB), due to its high transmission rate. Examining the effective reproduction number(<i>R_t</i> ) of SPPTB and patient characteristics is crucial for crafting targeted TB control measures. This study aimed to assess the <i>R_t</i> of SPPTB in Iran from 2011 to 2021 and profile SPPTB patient demographics, initial smear bacilli density, diagnosis delays, and spatial distribution. <b>Study Design:</b> This is a historical cohort study.</p><p><strong>Methods: </strong>A time-dependent method was used to estimate <i>R_t</i> , and monthly data from the national TB registry were scrutinized from 2011 to 2021.</p><p><strong>Results: </strong>A decline was observed in SPPTB incidence rates of 50909 SPPTB cases in Iran from 2011 to 2021. Approximately 29.1% of the cases were diagnosed within a month, while 44.5% experienced a one to three-month delay in diagnosis. The analysis revealed substantial heterogeneity in TB transmission dynamics across various provinces of Iran. Provinces such as Sistan and Baluchestan, Golestan, Guilan, Khuzestan, Tehran, and Khorasan Razavi exhibited the highest effective reproduction numbers. Additionally, there was a decreasing trend in the effective reproduction numbers across all provinces from 2011 to 2020.</p><p><strong>Conclusion: </strong>Effective reproduction numbers declined in most provinces from 2011 to 2020 but increased moderately after the COVID-19 pandemic, highlighting the need for targeted public health interventions. Although SPPTB incidence rates are declining nationally, elevated incidence rates and effective reproduction numbers in regions such as Sistan and Baluchestan, Golestan, Guilan, Khuzestan, Tehran, and Khorasan Razavi signify the need for persistent TB management efforts in Iran.</p>","PeriodicalId":17164,"journal":{"name":"Journal of research in health sciences","volume":"24 4","pages":"e00633"},"PeriodicalIF":1.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11492524/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142468542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}