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Mohammad Ali Mansournia
Tehran University of Medical Sciences
300Publications
24H-index
2,342Citations
Publications 300
Newest
#1Ahmad Khosravi (Shahroud University of Medical Sciences)H-Index: 12
#2Mohammad Ali Mansournia (Tehran University of Medical Sciences)H-Index: 24
Population attributable fraction (PAF) refers to the proportion of all cases with a particular outcome in a population that could be prevented by eliminating a specific exposure. The authors of a recent paper evaluated the prevalence and estimated the PAFs for risk factors of TB among elderly people in China [Inf Dis Poverty. 2019;8:7]. Confounding is inevitable in observational studies and Levin’s formula is of limited use in practice for unbiasedly estimating PAF. In a complex survey design, a...
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#1Ibrahim Abdollahpour (IUMS: Isfahan University of Medical Sciences)
#2Mohammad Ali Mansournia (Tehran University of Medical Sciences)H-Index: 24
Last.Saharnaz Nedjat (Tehran University of Medical Sciences)H-Index: 20
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There are few if any reports concerning the joint use of waterpipe, cigarette and exposure to second-hand smoking in Tehran, Iran. Here, we simultaneously investigated the prevalence and predictors of smoking habits in Iranian adults. In this population-based cross-sectional study, we recruited 1057 Iranian adults between August 2013 and February 2015, in Tehran, a multi-ethnic city. Participants were selected using random digit dialing. Three separate logistic regression models were applied to ...
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#1Ahmad Khosravi (Shahroud University of Medical Sciences)H-Index: 12
#2Mohammad Ali Mansournia (Tehran University of Medical Sciences)H-Index: 24
All observational studies are liable to confounding and Levin’s formula becomes useless in practice for unbiasedly estimating PAF. With respect to causal interpretation of PAF in public health setting, unbiased estimation of PAF requires several assumptions which are ignored in practice. We recommend using Miettinen PAF formula with careful consideration about possibility of bias in study design and analysis.
1 CitationsSource
#1Amin Doosti-IraniH-Index: 6
#2Omid Reza Tamtaji (KAUMS: Kashan University of Medical Sciences)H-Index: 7
Last.Zatollah Asemi (KAUMS: Kashan University of Medical Sciences)H-Index: 29
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Abstract In this meta-analysis of randomized controlled trials (RCTs), the effects of vitamin D supplementation on the scores for the expanded disability status scale (EDSS) in people with multiple sclerosis (MS) are assessed. The following databases were search up to January 2018: MEDLINE, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials. The quality of the relevant extracted data was assessed according to the Cochrane risk of bias tool. Data were pooled by the use of ...
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#1Samaneh Akbarpour (Tehran University of Medical Sciences)H-Index: 6
#2Davood Khalili (Shahid Beheshti University of Medical Sciences and Health Services)H-Index: 21
Last.Akbar Fotouhi (Tehran University of Medical Sciences)H-Index: 32
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We aimed to evaluate the relationship between different lifestyle patterns and blood pressure. This study is based on the national survey of the risk factors for non-communicable diseases in Iran in 2012. A total of 8244 people aged 25–70 years old have been enrolled in the survey. Clustering on the individual data of lifestyle factors (nutrition, physical activity, and smoking) were carried out using self-organizing neural network method. Multivariable regression models were used to determine t...
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#1Yaser MokhayeriH-Index: 4
#2Seyed Saeed Hashemi-Nazari (Shahid Beheshti University of Medical Sciences and Health Services)H-Index: 3
Last.Ashley I. Naimi (University of Pittsburgh)H-Index: 15
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Background and Purpose— Standard analytic approaches (eg, logistic regression) fail to adequately control for time-dependent confounding and, therefore, may yield biased estimates of the total effe...
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#1Saeid SafiriH-Index: 27
#2Ali-Asghar Kolahi (Shahid Beheshti University of Medical Sciences and Health Services)H-Index: 13
Last.Marita Cross (USYD: University of Sydney)H-Index: 30
view all 14 authors...
Objectives To provide the level and trends of prevalence, incidence and disability adjusted life years (DALYs) for rheumatoid arthritis (RA) in 195 countries from 1990 to 2017 by age, sex, Socio-demographic Index (SDI; a composite of sociodemographic factors) and Healthcare Access and Quality (an indicator of health system performance) Index. Methods Data from the Global Burden of Diseases, Injuries, and Risk Factors study (GBD) 2017 were used. GBD 2017 modelled the burden of RA for 195 countrie...
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#1Donna Parizadeh (Shahid Beheshti University of Medical Sciences and Health Services)H-Index: 2
#2Seyyed Saeed Moazzeni (Shahid Beheshti University of Medical Sciences and Health Services)
Last.Farzad Hadaegh (Shahid Beheshti University of Medical Sciences and Health Services)H-Index: 30
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Objectives To assess the initiation rate and determinants of tobacco smoking among adults.
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#1Nazanin Fekri (Shahid Beheshti University of Medical Sciences and Health Services)
#2Pegah Khaloo (Shahid Beheshti University of Medical Sciences and Health Services)H-Index: 3
Last.Farzad Hadaegh (Shahid Beheshti University of Medical Sciences and Health Services)H-Index: 30
view all 6 authors...
We estimated the average numbers of years lived with and without cardiovascular disease (CVD) in normal weight, overweight, and obese individuals, aged ≥30 years. A total of 7529 participants were recruited. The multi-state Markov model was used to obtain hazard ratios (HRs) for three transitions (CVD free to nonfatal CVD, CVD free to all-cause death, and nonfatal CVD to all-cause death) stratified by body mass index (BMI) categories at baseline and adjusted for confounders including sex, age, s...
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#1Amir Almasi-Hashiani (Arak University of Medical Sciences)H-Index: 7
#2Mohammad Ali Mansournia (Tehran University of Medical Sciences)H-Index: 24
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