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Chung E, Polikarpov D, Mazure H, James A, Doosti H, Campbell D, Gillatt D. Novoglan device for treatment of adult phimosis: Novoglan-01 open-label clinical trial on safety, efficacy and tolerability. Transl Androl Urol 2023; 12:1050-1061. [PMID: 37554529 PMCID: PMC10406538 DOI: 10.21037/tau-23-91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 06/13/2023] [Indexed: 08/10/2023] Open
Abstract
BACKGROUND At present, the only definitive treatment for adult phimosis is circumcision, which is a surgical removal of the prepuce. Novoglan is a novel device that could offer patients with phimosis an alternative to surgery. It is based on application of custom-moulded balloons for gradual skin remodelling and prepuce dilatation. This open-label clinical trial aimed to investigate the safety, efficacy and tolerability of the Novoglan treatment. METHODS A prospective trial was conducted on 20 patients with adult phimosis recruited at Macquarie University Hospital and Princess Alexandra Hospital. After eligibility screening and enrolment, patients were provided with the Novoglan product and training. The treatment involved twice daily 10-minute applications for a duration of 4-8 weeks with patient's degree of phimosis assessed before and at 6-8 weeks after the initiation of the treatment. Participants were also asked to complete questionnaires aimed to assess the safety and tolerability of the Novoglan treatment. RESULTS The treatment was successful with improved foreskin retraction in 90% of patients and all patients achieving full foreskin retraction after the treatment. Ninety-five percent of patients reported reduced level of anxiety, and over 60% of patients reported reduced pain/discomfort during sexual activity or in general. Similarly, 95% of patients were moderately-to-very satisfied with the treatment and would recommend Novoglan to others. No adverse events were observed and only 15% of participants reported minor side effects. CONCLUSIONS The Novoglan-01 trial demonstrated high safety, efficacy and tolerability of the Novoglan treatment for adult phimosis and its high potential as a conservative alternative to circumcision or steroid cream treatment. TRIAL REGISTRATION The Novoglan-01 study has been registered with the Australia and New Zealand Clinical Trial Registry under the reference ACTRN 1262 10009 24853, dated 15 July 2021.
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Affiliation(s)
- Eric Chung
- Department of Urology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia
| | - Dmitry Polikarpov
- Department of Urology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | | | - Andrew James
- Platigo Solutions Pty Ltd., Roseville, NSW, Australia
| | - Hassan Doosti
- School of Mathematical and Physical Sciences, Macquarie University, Ryde, NSW, Australia
| | | | - David Gillatt
- Macquarie University Hospital, Macquarie University, Ryde, NSW, Australia
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Pourmotahari F, Doosti H, Borumandnia N, Tabatabaei SM, Alavi Majd H. Group-level comparison of brain connectivity networks. BMC Med Res Methodol 2022; 22:273. [PMID: 36253728 PMCID: PMC9575214 DOI: 10.1186/s12874-022-01712-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/16/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Functional connectivity (FC) studies are often performed to discern different patterns of brain connectivity networks between healthy and patient groups. Since many neuropsychiatric disorders are related to the change in these patterns, accurate modelling of FC data can provide useful information about disease pathologies. However, analysing functional connectivity data faces several challenges, including the correlations of the connectivity edges associated with network topological characteristics, the large number of parameters in the covariance matrix, and taking into account the heterogeneity across subjects. METHODS This study provides a new statistical approach to compare the FC networks between subgroups that consider the network topological structure of brain regions and subject heterogeneity. RESULTS The power based on the heterogeneity structure of identity scaled in a sample size of 25 exhibited values greater than 0.90 without influencing the degree of correlation, heterogeneity, and the number of regions. This index had values above 0.80 in the small sample size and high correlation. In most scenarios, the type I error was close to 0.05. Moreover, the application of this model on real data related to autism was also investigated, which indicated no significant difference in FC networks between healthy and patient individuals. CONCLUSIONS The results from simulation data indicated that the proposed model has high power and near-nominal type I error rates in most scenarios.
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Affiliation(s)
- Fatemeh Pourmotahari
- Department of Biostatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hassan Doosti
- Department of Mathematics and Statistics, Macquarie University, Macquarie, Australia
| | - Nasrin Borumandnia
- Urology and Nephrology Research Centre, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyyed Mohammad Tabatabaei
- Department of Medical Informatics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid Alavi Majd
- Department of Biostatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Salehi Fadardi M, Salehi Fadardi J, Mahjoob M, Doosti H. Post-saccadic Eye Movement Indices Under Cognitive Load: A Path Analysis to Determine Visual Performance. J Ophthalmic Vis Res 2022; 17:397-404. [PMID: 36160105 PMCID: PMC9493421 DOI: 10.18502/jovr.v17i3.11578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 02/19/2022] [Indexed: 11/24/2022] Open
Abstract
Purpose The evidence on the linear relationship between cognitive load, saccade, fixation, and task performance was uncertain. We tested pathway models for degraded task performance resulting from changes in saccadic and post-saccadic fixation under cognitive load. Methods Participants' (n = 38) eye movements were recorded using a post-saccadic discrimination task with and without arithmetic operations to impose cognitive load, validated through recording heart rate variability and subjective measurement. Results Results showed that cognitive load led to longer latencies of saccade and fixation; more inaccurate responses and fewer secondary saccades (P < 0.001). Longer saccade latencies influenced task performance indirectly via increases in fixation latency, therefore, longer reaction times and higher response errors were observed due to limited fixation duration on desired target. Conclusion We suggest that latency and duration of fixation indicate efficiency of information processing and can predict the speed and accuracy of task performance under cognitive load.
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Affiliation(s)
- Marzieh Salehi Fadardi
- Department of Optometry & Vision Sciences, University of Melbourne, Melbourne, Australia
| | - Javad Salehi Fadardi
- Department of Psychology, Ferdowsi University, Mashhad, Iran
- Claremont Graduate University, California, USA
- School of Psychology, Bangor University, Bangor, UK
| | - Monireh Mahjoob
- Health Promotion Research Center, Department of Optometry, Rehabilitation Faculty, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hassan Doosti
- Department of Statistics, Macquarie University, Sydney, Australia
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Yousefi M, Sasannezhad P, Rakhshande H, Doosti H, Saki A, Baghestani Kouzegar Z, Ahmadi H, Delshad E. Effect of Carthamus tinctorius L. (Safflower) on National Institute of Health Stroke Scale Scores of Ischemic Stroke Patients: A Pilot Clinical Trial. TIM 2022. [DOI: 10.18502/tim.v7i2.9922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Experiencing complications within the first two weeks after stroke leads to a high risk of mortality and length of hospitalization. The present pilot study was intended to investigate the hypothesis that adult patients treated with safflower or not would present with fewer neurological complications following 15 days. In a randomized controlled trial, subjects diagnosed with ischemic cerebrovascular accident (CVA) based on focal neurological findings on brain imaging who met the inclusion criteria of our study were recruited from Ghaem Hospital, Mashhad, Iran, between 2016 and 2017. Thirty-six patients were included in the survey and randomly allocated into treatment (A) and control (B) groups. An oral syrup of safflower extract and nasal drop of safflower oil were additionally prescribed for group A. Group B only received a standard anti-ischemic regimen. The primary outcome measure was the National Institutes of Health Stroke Scale score (NIHSS) over 15 days. Safflower treatment led to a notably higher mean difference in the NIHSS score between the baseline score and 15-day post-treatment score in group A in comparison to group B (p < 0.001). However, adjustment for covariates (age, gender, and baseline measures) showed no significant reduction in neurological status between them (p = 0.340). There was a statistically significant difference in neurological symptom scores between the groups (p = 0.044). Based on this pilot study, adjuvant treatment with safflower in addition to the standard anti-ischemic regimen can be more effective than individual conventional drugs for treating ischemic CVA among adults.
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Borumandnia N, Majd HA, Doosti H, Olazadeh K. The trend analysis of neurological disorders as major causes of death and disability according to human development, 1990-2019. Environ Sci Pollut Res Int 2022; 29:14348-14354. [PMID: 34609680 DOI: 10.1007/s11356-021-16604-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
This study aims to assess the trends in the incidence rate of neurological disorders in developed and developing countries worldwide during 1990-2019. The age-standardized incidence rate (per 100000 persons) of neurological disorders was the primary outcome, extracted from the Global Burden of Disease database for 189 countries and territories from 1990 to 2019. Using the Human Development Index (HDI), countries were classified into developed (HDI ≥ 0.7) and developing (HDI < 0.7) groups. Longitudinal analysis was performed using the Latent Growth Model (LGM) to assess the change in the incidence rate of neurological disorders over time in these groups. In developed countries, the most increasing rate is related to depressive disorders, with a rising rate of 40.15 in 100000 every five years (p = 0.001). Alzheimer's and dementia, Parkinson and multiple sclerosis are in the next rank, with increasing rates of 8.77, 1.24, and .02, respectively (all p < 0.001). Over time, the significant decreasing trend has been determined related to conducting disorder, attention-deficit and hyperactivity, meningitis, anxiety, and eating disorders, with the rates of - 13.92, - 4.96, - 2.7, - 1.6, and - 1.44, respectively (all p < 0.05). In developing countries, meningitis, conduct disorder, attention-deficit and hyperactivity, stroke, and autism spectrum showed a significant decreasing trend over time, with rates of - 15.45, - 5.84, - 2.56, - 1.86, and - 1.07, respectively (all p < 0.05). Headache disorder has the most increasing rate of 79.5, following depressive (rate 35.32), substance use (rate 14.99), anxiety (rate 7.18), and eating (rate 3.4) disorders. Also, Alzheimer's and dementia, bipolar disorder, schizophrenia, Parkinson's, brain and central nervous system cancer, and multiple sclerosis are in the next rank and had significant increasing trends (all p < 0.05). Given the high economic and social burden of neurological disorders, the rate of these diseases in most countries does not seem to have dropped remarkably. The heterogeneous incidence rate in some world countries seems to be due to underestimating and gaps in epidemiological information. It is necessary to provide exact registry systems for health policies, especially in developing countries.
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Affiliation(s)
- Nasrin Borumandnia
- Urology and Nephrology Research Centre, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Alavi Majd
- Department of Biostatistics, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Hassan Doosti
- Department of Mathematics and Statistics, Macquarie University, Macquarie, Australia
| | - Keyvan Olazadeh
- Department of Biostatistics, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Shirazi E, Doosti H. Nonparametric estimation of a quantile density function under Lp risk via block thresholding method. COMMUN STAT-SIMUL C 2022. [DOI: 10.1080/03610918.2019.1656250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Esmaeil Shirazi
- Department of Statistics, Gonbad Kavous University, Gonbad, Iran
| | - Hassan Doosti
- Department of Mathematics and Statistics, Macquarie University, Sydney, Australia
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Tavakoly Sany SB, Doosti H, Mahdizadeh M, Orooji A, Peyman N. The Health Literacy Status and Its Role in Interventions in Iran: A Systematic and Meta-Analysis. Int J Environ Res Public Health 2021; 18:4260. [PMID: 33920508 PMCID: PMC8073744 DOI: 10.3390/ijerph18084260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/06/2021] [Accepted: 04/14/2021] [Indexed: 11/17/2022]
Abstract
There are increasing calls for public health policies to realize the visions of a health literate society and health literacy on a global scale. However, there are still more gaps in what researchers recognize and what steps they should take to improve health literacy (HL) skills. This review aimed to measure the HL status of the Iranian population and the effect size of the underlying association between HL and other health outcomes, and to examine the effectiveness of HL interventions on improving the functional dimension of HL, self-efficacy, and health-promoting behaviors. All full text published articles written in English and Persian language were included from inception until January 2019, but the type of study is not limited. A total of 52 potentially relevant articles with data on 36,523 participants were included in this review. In the population with health conditions, the average HL score was 62.51 (95% CI: 59.95-65.08), while in the patient population, the HL score was 64.04 (95% CI: 60.64-67.45). Health literacy was positively and significantly correlated with self-care behaviors 0.42 (95% CI; 0.35-0.49), self-efficacy 0.35 (95% CI; 0.26-0.43), knowledge 0.50 (95% CI; 0.44-0.55), communication skills 0.33 (95% CI; 0.25-0.41), and health promotion behaviors 0.39 (95% CI; 0.35-0.44). The meta-analyses showed that overall, HL interventions significantly improved HL status, self-efficacy, and health promotion behaviors. Results indicate that HL status was in the range of marginal HL level in the Iranian population. Our finding highlights the beneficial impact of HL intervention on health-promoting behaviors and self-efficacy, particularly in low literacy/socioeconomic status people.
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Affiliation(s)
- Seyedeh Belin Tavakoly Sany
- Department of Health Education and Health Promotion, Faculty of Health, Mashhad University of Medical Sciences, Mashhad 13131-99137, Iran; (S.B.T.S.); (M.M.)
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad 13131-99137, Iran;
| | - Hassan Doosti
- Department of Mathematics and Statistics, Macquarie University, Sydney, NSW 2109, Australia;
| | - Mehrsadat Mahdizadeh
- Department of Health Education and Health Promotion, Faculty of Health, Mashhad University of Medical Sciences, Mashhad 13131-99137, Iran; (S.B.T.S.); (M.M.)
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad 13131-99137, Iran;
| | - Arezoo Orooji
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad 13131-99137, Iran;
- Department of Epidemiology and Biostatistics, Faculty of Health Sciences, Mashhad University of Medical Sciences, Mashhad 13131-99137, Iran
| | - Nooshin Peyman
- Department of Health Education and Health Promotion, Faculty of Health, Mashhad University of Medical Sciences, Mashhad 13131-99137, Iran; (S.B.T.S.); (M.M.)
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad 13131-99137, Iran;
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Boroumand F, Shakeri MT, Banaee T, Pourreza H, Doosti H. An Analysis of the Areas Occupied by Vessels in the Ocular Surface of Diabetic Patients: An Application of a Nonparametric Tilted Additive Model. Int J Environ Res Public Health 2021; 18:3735. [PMID: 33918420 PMCID: PMC8038237 DOI: 10.3390/ijerph18073735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/19/2021] [Accepted: 03/28/2021] [Indexed: 11/17/2022]
Abstract
(1) Background: As diabetes melllitus (DM) can affect the microvasculature, this study evaluates different clinical parameters and the vascular density of ocular surface microvasculature in diabetic patients. (2) Methods: In this cross-sectional study, red-free conjunctival photographs of diabetic individuals aged 30-60 were taken under defined conditions and analyzed using a Radon transform-based algorithm for vascular segmentation. The Areas Occupied by Vessels (AOV) images of different diameters were calculated. To establish the sum of AOV of different sized vessels. We adopt a novel approach to investigate the association between clinical characteristics as the predictors and AOV as the outcome, that is Tilted Additive Model (TAM). We use a tilted nonparametric regression estimator to estimate the nonlinear effect of predictors on the outcome in the additive setting for the first time. (3) Results: The results show Age (p-value = 0.019) and Mean Arterial Pressure (MAP) have a significant linear effect on AOV (p-value = 0.034). We also find a nonlinear association between Body Mass Index (BMI), daily Urinary Protein Excretion (UPE), Hemoglobin A1C, and Blood Urea Nitrogen (BUN) with AOV. (4) Conclusions: As many predictors do not have a linear relationship with the outcome, we conclude that the TAM will help better elucidate the effect of the different predictors. The highest level of AOV can be seen at Hemoglobin A1C of 9% and AOV increases when the daily UPE exceeds 600 mg. These effects need to be considered in future studies of ocular surface vessels of diabetic patients.
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Affiliation(s)
- Farzaneh Boroumand
- Department of Mathematics and Statistics, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia;
- Department of Biostatistics, School of Health, Mashhad University of Medical Sciences, Mashhad 9137673119, Iran
| | - Mohammad Taghi Shakeri
- Department of Biostatistics, School of Health, Mashhad University of Medical Sciences, Mashhad 9137673119, Iran
| | - Touka Banaee
- Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA;
| | - Hamidreza Pourreza
- Department Computer Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran;
| | - Hassan Doosti
- Department of Mathematics and Statistics, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia;
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Nazar E, Baghishani H, Doosti H, Ghavami V, Aryan E, Nasehi M, Sharafi S, Esmaily H, Yazdani Charati J. Bayesian Spatial Survival Analysis of Duration to Cure among New Smear-Positive Pulmonary Tuberculosis (PTB) Patients in Iran, during 2011-2018. Int J Environ Res Public Health 2020; 18:ijerph18010054. [PMID: 33374751 PMCID: PMC7794786 DOI: 10.3390/ijerph18010054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 12/01/2022]
Abstract
Mycobacterium tuberculosis is the causative agent of tuberculosis (TB), and pulmonary TB is the most prevalent form of the disease worldwide. One of the most concrete actions to ensure an effective TB control program is monitoring TB treatment outcomes, particularly duration to cure; but, there is no strong evidence in this respect. Thus, the primary aim of this study was to examine the possible spatial variations of duration to cure and its associated factors in Iran using the Bayesian spatial survival model. All new smear-positive PTB patients have diagnosed from March 2011 to March 2018 were included in the study. Out of 34,744 patients, 27,752 (79.90%) patients cured and 6992 (20.10%) cases were censored. For inferential purposes, the Markov chain Monte Carlo algorithms are applied in a Bayesian framework. According to the Bayesian estimates of the regression parameters in the proposed model, a Bayesian spatial log-logistic model, the variables gender (male vs. female, TR = 1.09), altitude (>750 m vs. ≤750 m, TR = 1.05), bacilli density in initial smear (3+ and 2+ vs. 1–9 Basil & 1+, TR = 1.09 and TR = 1.02, respectively), delayed diagnosis (>3 months vs. <1 month, TR = 1.02), nationality (Iranian vs. other, TR = 1.02), and location (urban vs. rural, TR = 1.02) had a significant influence on prolonging the duration to cure. Indeed, pretreatment weight (TR = 0.99) was substantially associated with shorter duration to cure. In summary, the spatial log-logistic model with convolution prior represented a better performance to analyze the duration to cure of PTB patients. Also, our results provide valuable information on critical determinants of duration to cure. Prolonged duration to cure was observed in provinces with low TB incidence and high average altitude as well. Accordingly, it is essential to pay a special attention to such provinces and monitor them carefully to reduce the duration to cure while maintaining a focus on high-risk provinces in terms of TB prevalence.
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Affiliation(s)
- Eisa Nazar
- Department of Biostatistics, Faculty of Health, Mashhad University of Medical Sciences, Mashhad 913767-3119, Iran;
| | - Hossein Baghishani
- Department of Statistics, Faculty of Mathematical Sciences, Shahrood University of Technology, Shahrood 316-3619995161, Iran;
| | - Hassan Doosti
- Department of Mathematics and Statistics, Macquarie University, Sydney, NSW 2109, Australia;
| | - Vahid Ghavami
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad 913767-3119, Iran;
| | - Ehsan Aryan
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad 917669-9199, Iran;
| | - Mahshid Nasehi
- Centre for Communicable Diseases Control, Ministry of Health and Medical Education, Tehran 141994-3471, Iran; (M.N.); (S.S.)
| | - Saeid Sharafi
- Centre for Communicable Diseases Control, Ministry of Health and Medical Education, Tehran 141994-3471, Iran; (M.N.); (S.S.)
| | - Habibollah Esmaily
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad 913767-3119, Iran;
- Correspondence: (H.E.); (J.Y.C.)
| | - Jamshid Yazdani Charati
- Department of Biostatistics, Health Sciences Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari 484711-6548, Iran
- Correspondence: (H.E.); (J.Y.C.)
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Talebi A, Mohammadnejad A, Akbari A, Pourhoseingholi MA, Doosti H, Moghimi-Dehkordi B, Agah S, Bahardoust M. Survival analysis in gastric cancer: a multi-center study among Iranian patients. BMC Surg 2020; 20:152. [PMID: 32660458 PMCID: PMC7359591 DOI: 10.1186/s12893-020-00816-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/06/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Gastric cancer (GC) has been considered as the 5th most common type of cancer and the third leading cause of cancer-associated death worldwide. The aim of this historical cohort study was to evaluate the survival predictors for all patients with GC using the Cox proportional hazards, extended Cox, and gamma-frailty models. METHODS This historical cohort study was performed according to documents of 1695 individuals having GC referred to three medical centers in Iran from 2001 to 2018. First, most significant prognostic risk factors on survival were selected, Cox proportional hazards, extended Cox, gamma-frailty models were applied to evaluate the effects of the risk factors, and then these models were compared with the Akaike information criterion. RESULTS The age of patients, body mass index (BMI), tumor size, type of treatment and grade of the tumor increased the hazard rate (HR) of GC patients in both the Cox and frailty models (P < 0.05). Also, the size of the tumor and BMI were considered as time-varying variables in the extended Cox model. Moreover, the frailty model showed that there is at least an unknown factor, genetic or environmental factors, in the model that is not measured (P < 0.05). CONCLUSIONS Some prognostic factors, including age, tumor size, the grade of the tumor, type of treatment and BMI, were regarded as indispensable predictors in patients of GC. Frailty model revealed that there are unknown or latent factors, genetic and environmental factors, resulting in the biased estimates of the regression coefficients.
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Affiliation(s)
- Atefeh Talebi
- Colorectal Research Center, Iran University of Medical Center, Tehran, Iran
| | - Afsaneh Mohammadnejad
- Unit of Epidemiology and Biostatistics, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Abolfazl Akbari
- Colorectal Research Center, Iran University of Medical Center, Tehran, Iran
| | - Mohamad Amin Pourhoseingholi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hassan Doosti
- Department of Statistics, School of Health, Macquarie University, Sydney, Australia
| | - Bijan Moghimi-Dehkordi
- Department of Health System Research, Research Institute for Gastroenterology and Liver Disease, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahram Agah
- Colorectal Research Center, Iran University of Medical Center, Tehran, Iran.
| | - Mansour Bahardoust
- Colorectal Research Center, Iran University of Medical Center, Tehran, Iran.
- Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
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Peyman N, Shahedi F, Abdollahi M, Doosti H, Zadehahmad Z. Impact of Self-efficacy Strategies Education on Self-care Behaviors among Heart Failure Patients. J Tehran Heart Cent 2020. [DOI: 10.18502/jthc.v15i1.3332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: Self-efficacy in self-care behaviors is an effective framework for measuring patients’ degree of ability to perform selfcare behaviors that significantly affect their recovery process and quality of life. This study was designed to investigate the effects of education based on self-efficacy strategies on self-care behaviors in heart failure patients.
Methods: A semi-experimental study was conducted on 80 heart failure patients divided into 2 equal groups of test and control. The intervention group received three 60-minute practical and theoretical training sessions based on self-care and self-efficacy strategies, while the control group received the usual care services. Self-care behaviors and self-efficacy were evaluated before training, shortly after training, and 3 months after the training program using the Sullivan self-efficacy questionnaire for heart failure patients and the European self-care behaviors questionnaires.
Results: The mean age of the patients was 55.00±8.48 and 51.61±8.51 years in the intervention and control groups, respectively. Women comprised 73.7% (n=59) of the study population. The mean score for the self-care and self-efficacy questionnaires in the experimental group was 23.50±6.58 and 18.57±6.64, correspondingly, before the intervention, which increased to 42.64±6.74 (P<0.014) and 32.29±7.06 (P<0.001), respectively, shortly after the intervention. A significant improvement also occurred at 3 months’ follow-up (P<0.001). Self-care behaviors also revealed a positive correlation with self-efficacy shortly after the intervention (r=0.82, P<0.001) and 3 months after the intervention (r=0.85, P<0.001).
Conclusion: The implementation of educational interventions based on self-efficacy strategies could have positive effects on healthpromoting behaviors among heart failure patients.
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Peyman N, Shahedi F, Abdollahi M, Doosti H, Zadehahmad Z. Impact of Self-Efficacy Strategies Education on Self-Care Behaviors among Heart Failure Patients. J Tehran Heart Cent 2020; 15:6-11. [PMID: 32742286 PMCID: PMC7360864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background: Self-efficacy in self-care behaviors is an effective framework for measuring patients' degree of ability to perform self-care behaviors that significantly affect their recovery process and quality of life. This study was designed to investigate the effects of education based on self-efficacy strategies on self-care behaviors in heart failure patients. Methods: A semi-experimental study was conducted on 80 heart failure patients divided into 2 equal groups of test and control. The intervention group received three 60-minute practical and theoretical training sessions based on self-care and self-efficacy strategies, while the control group received the usual care services. Self-care behaviors and self-efficacy were evaluated before training, shortly after training, and 3 months after the training program using the Sullivan self-efficacy questionnaire for heart failure patients and the European self-care behaviors questionnaires. Results: The mean age of the patients was 55.00±8.48 and 51.61±8.51 years in the intervention and control groups, respectively. Women comprised 73.7% (n=59) of the study population. The mean score for the self-care and self-efficacy questionnaires in the experimental group was 23.50±6.58 and 18.57±6.64, correspondingly, before the intervention, which increased to 42.64±6.74 (P<0.014) and 32.29±7.06 (P<0.001), respectively, shortly after the intervention. A significant improvement also occurred at 3 months' follow-up (P<0.001). Self-care behaviors also revealed a positive correlation with self-efficacy shortly after the intervention (r=0.82, P<0.001) and 3 months after the intervention (r=0.85, P<0.001). Conclusion: The implementation of educational interventions based on self-efficacy strategies could have positive effects on health-promoting behaviors among heart failure patients.
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Affiliation(s)
- Nooshin Peyman
- Department of Health Education and Health Promotion, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Fateme Shahedi
- Department of Radiology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran.,Health Sciences Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran.
| | - Mahbubeh Abdollahi
- Department of Public Health, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran.,Health Science Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Hassan Doosti
- Health Science Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Zohre Zadehahmad
- Health Sciences Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran.,Department of Public Health, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran.,Corresponding Author: Zohre Zadehahmad, Senior Lecturer in Public Health, Department of Public Health, School of Health, Torbat Heydariyeh University of Medical Sciences, Ferdosi Blvd., Torbat Heydariyeh, Iran. 9519633787. Tel: +98 95 2226013. Fax: +98 95 19633787. E-mail: .
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Chesneau C, Doosti H, Stone L. Adaptive wavelet estimation of a function from an m-dependent process with possibly unbounded m. COMMUN STAT-THEOR M 2019. [DOI: 10.1080/03610926.2018.1423700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Christophe Chesneau
- Laboratoire de Mathématiques Nicolas Oresme, Université de Caen Normandie BP Caen Cedex, France
| | - Hassan Doosti
- Department of Statistics, Macquarie University, Sydney, Australia
| | - Lewi Stone
- Department of Mathematical and Geospatial Sciences, RMIT University, Melbourne, Australia
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14
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Tajfard M, Tavakoly Sany SB, Avan A, Latiff LA, Rahimi HR, Moohebati M, Hasanzadeh M, Ghazizadeh H, Esmaeily H, Doosti H, Taghipour A, Ghayour-Mobarhan M, Ferns GA, Emamian M, Bin Abd Mutalib MS. Relationship between serum high sensitivity C-reactive protein with angiographic severity of coronary artery disease and traditional cardiovascular risk factors. J Cell Physiol 2018; 234:10289-10299. [PMID: 30548615 DOI: 10.1002/jcp.27945] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 10/09/2018] [Indexed: 12/25/2022]
Abstract
Serum high-sensitivity C-reactive protein (hs-CRP) is predictive of coronary artery disease (CAD). The aim of this study was to examine the possible association of hs-CRP with presence and severity of CAD and traditional CAD risk factors. This case-control study was carried out on 2,346 individuals from September 2011 to May 2013. Of these 1,187 had evidence of coronary disease, and were subject to coronary angiography, and the remainder were healthy controls (n = 1,159). Characteristics were determined using standard laboratory techniques and serum Hs-CRP levels were estimated using enzyme-linked immunosorbent assay (ELISA) kits, and severity of CAD was assessed according to the score of obstruction in coronary artery. Serum hs-CRP levels were higher in those with severe coronary disease, who had stenosis ≥ 50% stenosis of at least one coronary artery (all p < 0.001 vs. individuals in healthy control), and correlated significantly with the score for coronary artery disease (all p < 0.01). After adjustment for conventional risk factors, regression analysis revealed that smoking habits, fasting blood glucose, total cholesterol, high-density lipoprotein, hs-CRP, blood pressure, anxiety, dietary intake of vitamin E, and cholesterol remained as independent determinants for angiographic severity of CAD. The area under the receiving operating characteristic (ROC) curve for serum hs-CRP was 0.869 (CI 95% 0.721-0.872, p < 0.001). The optimal values for the cut-off point was a serum hs-CRP of 2.78 mg/l (sensitivity 80.20%, specificity 85%) to predict severity of CAD. Increased serum hs-CRP levels are significantly associated with angiographic severity of CAD, suggesting its value as a biomarkers for predicting CAD.
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Affiliation(s)
- Mohammad Tajfard
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Health Education and Health Promotion, School of Health, Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyedeh Belin Tavakoly Sany
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Health Education and Health Promotion, School of Health, Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Avan
- Metabolic Syndrome Research Centre, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Latiffah A Latiff
- Department of Community Health, Faculty of Medicine and Health Sciences, University Putra Malaysia, Seri Kembangan, Malaysia
| | - Hamid Reza Rahimi
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Vascular and Endovascular Surgery Research Centre, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohsen Moohebati
- Department of Cardiology, Ghaem Educational Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehdi Hasanzadeh
- Department of Biostatistics and Epidemiology, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamideh Ghazizadeh
- Metabolic Syndrome Research Centre, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Habibollah Esmaeily
- Department of Biostatistics and Epidemiology, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hassan Doosti
- Department of Statistics, School of Health, Macquarie University, Sydney, Australia
| | - Ali Taghipour
- Department of Biostatistics and Epidemiology, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Ghayour-Mobarhan
- Metabolic Syndrome Research Centre, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gordon A Ferns
- Brighton & Sussex Medical School, Division of Medical Education, Falmer, Brighton, Sussex BN1 9PH, UK
| | - Marzie Emamian
- Biochemistry Department, School of Medicine, Mashhad University of Medical Science, Mashhad, Iran
| | - Mohd Sokhini Bin Abd Mutalib
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, University Putra Malaysia, Malaysia
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Esmaily H, Tayefi M, Doosti H, Ghayour-Mobarhan M, Nezami H, Amirabadizadeh A. A Comparison between Decision Tree and Random Forest in Determining the Risk Factors Associated with Type 2 Diabetes. J Res Health Sci 2018; 18:e00412. [PMID: 29784893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 06/08/2023] Open
Abstract
BACKGROUND We aimed to identify the associated risk factors of type 2 diabetes mellitus (T2DM) using data mining approach, decision tree and random forest techniques using the Mashhad Stroke and Heart Atherosclerotic Disorders (MASHAD) Study program. STUDY DESIGN A cross-sectional study. METHODS The MASHAD study started in 2010 and will continue until 2020. Two data mining tools, namely decision trees, and random forests, are used for predicting T2DM when some other characteristics are observed on 9528 subjects recruited from MASHAD database. This paper makes a comparison between these two models in terms of accuracy, sensitivity, specificity and the area under ROC curve. RESULTS The prevalence rate of T2DM was 14% among these subjects. The decision tree model has 64.9% accuracy, 64.5% sensitivity, 66.8% specificity, and area under the ROC curve measuring 68.6%, while the random forest model has 71.1% accuracy, 71.3% sensitivity, 69.9% specificity, and area under the ROC curve measuring 77.3% respectively. CONCLUSIONS The random forest model, when used with demographic, clinical, and anthropometric and biochemical measurements, can provide a simple tool to identify associated risk factors for type 2 diabetes. Such identification can substantially use for managing the health policy to reduce the number of subjects with T2DM .
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Affiliation(s)
- Habibollah Esmaily
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Tayefi
- Clinical Research Unit, Mashhad university of Medical Sciences, Mashhad, Iran
| | - Hassan Doosti
- Department of Statistics, Macquarie University, Sydney, NSW, Australia
| | - Majid Ghayour-Mobarhan
- Biochemistry of Nutrition Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Nezami
- Department of Basic Sciences, Faculty of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Alireza Amirabadizadeh
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Moallem Avenue, Birjand, Iran.
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16
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Golabpour A, Etminani K, Doosti H, Miri HH, Ghanbari R. Providing an imputation algorithm for missing values of longitudinal data using Cuckoo search algorithm: A case study on cervical dystonia. Electron Physician 2017; 9:4648-4654. [PMID: 28848643 PMCID: PMC5557148 DOI: 10.19082/4648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 03/02/2017] [Indexed: 11/29/2022] Open
Abstract
Background Missing values in data are found in a large number of studies in the field of medical sciences, especially longitudinal ones, in which repeated measurements are taken from each person during the study. In this regard, several statistical endeavors have been performed on the concepts, issues, and theoretical methods during the past few decades. Methods Herein, we focused on the missing data related to patients excluded from longitudinal studies. To this end, two statistical parameters of similarity and correlation coefficient were employed. In addition, metaheuristic algorithms were applied to achieve an optimal solution. The selected metaheuristic algorithm, which has a great search functionality, was the Cuckoo search algorithm. Results Profiles of subjects with cervical dystonia (CD) were used to evaluate the proposed model after applying missingness. It was concluded that the algorithm used in this study had a higher accuracy (98.48%), compared with similar approaches. Conclusion Concomitant use of similar parameters and correlation coefficients led to a significant increase in accuracy of missing data imputation.
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Affiliation(s)
- Amin Golabpour
- M.Sc., Department of Biomedical Informatics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Kobra Etminani
- Ph.D., Assistant Professor, Department of Biomedical Informatics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hassan Doosti
- Ph.D., Assistant Professor, Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid Heidarian Miri
- Ph.D., Assistant Professor, Management & Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Ghanbari
- Ph.D., Associate Professor, Faculty of Mathematical Sciences, Department of Applied Mathematics, Ferdowsi University of Mashhad, Mashhad, Iran
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Banaee T, Pourreza H, Doosti H, Abrishami M, Ehsaei A, Basiry M, Pourreza R. Distribution of Different Sized Ocular Surface Vessels in Diabetics and Normal Individuals. J Ophthalmic Vis Res 2017; 12:361-367. [PMID: 29090043 PMCID: PMC5644400 DOI: 10.4103/jovr.jovr_238_16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Purpose: To compare the distribution of different sized vessels using digital photographs of the ocular surface of diabetic and normal individuals. Methods: In this cross-sectional study, red-free conjunctival photographs of diabetic and normal individuals, aged 30-60 years, were taken under defined conditions and analyzed using a Radon transform-based algorithm for vascular segmentation. The image areas occupied by vessels (AOV) of different diameters were calculated. The main outcome measure was the distribution curve of mean AOV of different sized vessels. Secondary outcome measures included total AOV and standard deviation (SD) of AOV of different sized vessels. Results: Two hundred and sixty-eight diabetic patients and 297 normal (control) individuals were included, differing in age (45.50 ± 5.19 vs. 40.38 ± 6.19 years, P < 0.001), systolic (126.37 ± 20.25 vs. 119.21 ± 15.81 mmHg, P < 0.001) and diastolic (78.14 ± 14.21 vs. 67.54 ± 11.46 mmHg, P < 0.001) blood pressures. The distribution curves of mean AOV differed between patients and controls (smaller AOV for larger vessels in patients; P < 0.001) as well as between patients without retinopathy and those with non-proliferative diabetic retinopathy (NPDR); with larger AOV for smaller vessels in NPDR (P < 0.001). Controlling for the effect of confounders, patients had a smaller total AOV, larger total SD of AOV, and a more skewed distribution curve of vessels compared to controls. Conclusion: Presence of diabetes mellitus is associated with contraction of larger vessels in the conjunctiva. Smaller vessels dilate with diabetic retinopathy. These findings may be useful in the photographic screening of diabetes mellitus and retinopathy.
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Affiliation(s)
- Touka Banaee
- Retina Research Center, Mashhad University of Medical Sciences, Mashhad, Irna.,Department of Ophthalmology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamidreza Pourreza
- Computer Engineering Department, School of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Hassan Doosti
- Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mojtaba Abrishami
- Retina Research Center, Mashhad University of Medical Sciences, Mashhad, Irna
| | - Asieh Ehsaei
- Refractive Error Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Optometry, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohsen Basiry
- Retina Research Center, Mashhad University of Medical Sciences, Mashhad, Irna
| | - Reza Pourreza
- Department of Electrical Engineering, University of Texas at Dallas, Richardson, USA
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18
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Chesneau C, Dewan I, Doosti H. On a deconvolution problem under competing risks. STATISTICS-ABINGDON 2016. [DOI: 10.1080/02331888.2016.1258073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Isha Dewan
- Indian Statistical Institute, New Delhi, India
| | - Hassan Doosti
- Mashhad University of Medical Sciences, Mashhad, Iran
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Afshar M, Doosti H, Shokri A, Sargolzaei M. Electronic and magnetic properties of single 3d-transition metals adsorbed on anthracene: a relativistic density functional theory study. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1190874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- M. Afshar
- Department of Physics, Materials Simulation Laboratory, Iran University of Science and Technology, Narmak, Tehran, Iran
| | - H. Doosti
- Department of Physics, Materials Simulation Laboratory, Iran University of Science and Technology, Narmak, Tehran, Iran
| | - A. Shokri
- Department of Physics, Materials Simulation Laboratory, Iran University of Science and Technology, Narmak, Tehran, Iran
| | - M. Sargolzaei
- Department of Chemistry, University of Shahrood, Shahrood, Iran
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Boskabadi H, Ashrafzadeh F, Doosti H, Zakerihamidi M. Assessment of Risk Factors and Prognosis in Asphyxiated Infants. Iran J Pediatr 2015; 25:e2006. [PMID: 26396695 PMCID: PMC4575793 DOI: 10.5812/ijp.2006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 03/03/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND Asphyxia is considered an important cause of morbidity and mortality in neonates. This condition can affect many vital organs including the central nervous system and may eventually lead to death or developmental disorders. OBJECTIVES Considering the high prevalence of asphyxia and its adverse consequences, the present study was conducted to evaluate the risk factors for birth asphyxia and assess their correlation with prognosis in asphyxiated infants. PATIENTS AND METHODS This two-year follow-up cohort study was conducted on 260 infants (110 asphyxiated infants and 150 healthy neonates) at Mashhad Ghaem Hospital during 2007 - 2014. Data collection tools consisted of a researcher-designed questionnaire including maternal and neonatal information and clinical/laboratory test results. The subjects were followed-up, using Denver II test for 6, 12, 18, and 24 months (after discharge). For data analysis, t-test was performed, using SPSS version 16.5. P value ≤ 0.05 was considered statistically significant. RESULTS Of 260 neonates, 199 (76.5%) and 61 (23.5%) cases presented with normal neonatal outcomes and with abnormal neonatal outcomes (developmental delay), respectively. Variables such as the severity of asphyxia (P = 0.000), five-minute Apgar score (P = 0.015), need for ventilation (P = 0.000), and severity of acidosis at birth (P = 0.001) were the major prognostic factors in infants with asphyxia. Additionally, prognosis was significantly poorer in boys and infants with dystocia history (P = 0.000). CONCLUSIONS Prevalence of risk factors for developmental delay including the severity of asphyxia need for mechanical ventilation, and severity of acidosis at birth, dystocia, and Apgar score were lower in surviving infants; therefore, controlling these risk factors may reduce asphyxia-associated complications.
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Affiliation(s)
- Hassan Boskabadi
- Department of Pediatrics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
| | - Farah Ashrafzadeh
- Department of Pediatrics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
| | - Hassan Doosti
- Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences, Mashhad,IR Iran
| | - Maryam Zakerihamidi
- Department of Midwifery, School of Medicine, Tonekabon Branch, Islamic Azad University, Tonekabon, IR Iran
- Corresponding author: Maryam Zakerihamidi, Department of Midwifery, School of Medicine, Tonekabon Branch, Islamic Azad University, Tonekabon, IR Iran. E-mail:
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Doosti H, Hall P. Making a non-parametric density estimator more attractive, and more accurate, by data perturbation. J R Stat Soc Series B Stat Methodol 2015. [DOI: 10.1111/rssb.12120] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hassan Doosti
- Mashhad University of Medical Sciences; Iran
- University of Melbourne; Australia
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Shirazi E, Doosti H, Niroumand H, Hosseinioun N. Nonparametric regression estimates with censored data based on block thresholding method. J Stat Plan Inference 2013. [DOI: 10.1016/j.jspi.2013.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Emdadi M, Safarian M, Doosti H. Standardized percentile curves of body mass index of northeast Iranian children aged 25 to 60 months. Iran J Pediatr 2011; 21:88-94. [PMID: 23056770 PMCID: PMC3446113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Revised: 07/12/2010] [Accepted: 08/30/2010] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Growth charts are widely used to assess children's growth status and can provide a trajectory of growth during early important months of life. Racial differences necessitate using local growth charts. This study aimed to provide standardized growth curves of body mass index (BMI) for children living in northeast Iran. METHODS A total of 23730 apparently healthy boys and girls aged 25 to 60 months recruited for 20 days from those attending community clinics for routine health checks. Anthropometric measurements were done by trained health staff using WHO methodology. The LMSP method with maximum penalized likelihood, the Generalized Additive Models, the Box-Cox power exponential distribution distribution, Akaike Information Criteria and Generalized Akaike Criteria with penalty equal to 3 [GAIC(3)], and Worm plot and Q-tests as goodness of fit tests were used to construct the centile reference charts. FINDINGS The BMI centile curves for boys and girls aged 25 to 60 months were drawn utilizing a population of children living in northeast Iran. CONCLUSION The results of the current study demonstrate the possibility of preparation of local growth charts and their importance in evaluating children's growth. Also their differences, relative to those prepared by global references, reflect the necessity of preparing local charts in future studies using longitudinal data.
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Affiliation(s)
- Maryam Emdadi
- Department of Statistics, Ferdowsi University, Mashhad, Iran
| | - Mohammad Safarian
- Department of Biochemistry and Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hassan Doosti
- Department of Statistics, Ferdowsi University, Mashhad, Iran
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Chaubey YP, Doosti H, Rao BLP. Wavelet Based Estimation of the Derivatives of a Density for a Negatively Associated Process. Journal of Statistical Theory and Practice 2008. [DOI: 10.1080/15598608.2008.10411886] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Feizzadeh B, Afshari JT, Rakhshandeh H, Rahimi A, Brook A, Doosti H. Cytotoxic effect of saffron stigma aqueous extract on human transitional cell carcinoma and mouse fibroblast. Urol J 2008; 5:161-167. [PMID: 18825622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
INTRODUCTION Saffron has been suggested to have inhibitory effects on tumoral cells. We evaluated the cytotoxic effect of aqueous extract of saffron on human transitional cell carcinoma (TCC) and mouse non-neoplastic fibroblast cell lines. MATERIALS AND METHODS Human TCC 5637 cell line and mouse fibroblast cell line (L929) were cultivated and incubated with different concentrations of aqueous extract of saffron stigma (50 microg/mL to 4000 microg/mL). Cytotoxic effect of saffron was evaluated by morphologic observation and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide colorimetric assay after 24, 48, 72, and 120 hours in each cell line. RESULTS After 24 hours, morphological observations showed growth inhibitory effects at saffron extract concentrations higher than 200 microg/mL for L929 cells and at concentrations of 50 microg/mL to 200 microg/mL for the TCC cells. These changes became more prominent after 48 hours. However, significant growth inhibitory effects of the extract were shown at concentrations of 400 microg/mL and 800 microg/mL. Higher concentrations of saffron correlated inversely with cell population of both cell lines. Significant reduction of the survived cells was seen at concentrations of 400 microg/mL and 2000 microg/mL for TCC and L929 cell lines, respectively. After 120 hours, decrease in the percentage of survived cells at higher concentrations of saffron extract was seen in both cell lines. At a concentration of 800 microg/mL, the survived L929 cells plummeted to less than 60% after 120 hours, while no TCC cells survived at this time. No L929 cells survived at 2000 microg/mL. CONCLUSION Saffron aqueous extract has inhibitory effects on the growth of both TCC 5637 and normal L929 cell lines. This effect is dose dependent.
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Affiliation(s)
- Behzad Feizzadeh
- Department of Urology, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
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Doosti H, Chaubey YP, Niroumand HA. On a Wavelet-Based Method of Estimating a Regression Function. COMMUN STAT-THEOR M 2007. [DOI: 10.1080/03610920601143741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Feizzadeh B, Doosti H, Movarrekh M. Distilled water as an irrigation fluid in percutaneous nephrolithotomy. Urol J 2006; 3:208-11. [PMID: 17559042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
INTRODUCTION The aim of this study was to evaluate the effect of distilled water as an irrigation fluid for percutaneous nephrolithotomy (PCNL) on the serum concentrations of sodium. MATERIALS AND METHODS A total of 30 patients with kidney calculi underwent tubeless PCNL using distilled water as the irrigation fluid. During the procedure, intravenous Ringer lactate solution was used if necessary. The patients received infusion of two-thirds dextrose 5% and one-third normal saline solution postoperatively. Four blood samples were taken to determine serum sodium and potassium levels at admission, just before the operation, after the operation, and on the first postoperative day. RESULTS The mean distilled water used was 8.1 L (range, 5.6 L to 11.2 L). Target and complete stone-free rates were 100% and 80%, respectively. None of the patients developed hyponatremia. The mean serum levels of sodium (meq/L) were 141.5 (range, 140 to 143), 140.7 (range, 125 to 159), 139.7 (range, 125 to 164), and 138.9 (range, 125 to 146), respectively (P = .005). Comparing every 2 samples, a significant difference was seen only between samples 1 and 4 (P = .005). Serum levels of potassium were all in normal range and there was no difference between the 4 samples (P = .12). CONCLUSION Our findings showed that using distilled water as an irrigation fluid during PCNL does not result in a clinically significant decrease in the serum level of sodium and can be used if necessary. However, evaluation of the serum sodium level on the postoperative day is mandatory.
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Affiliation(s)
- Behzad Feizzadeh
- Department of Urology, Qaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
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