Directory

Electronic health record (EHR) data, neurology/neuroscience, machine learning and data science, risk prediction models

He is closely working with the Signature Program in Health Services & Systems Research (HSSR) at Duke-NUS and Emergency Department at SGH, where he has the opportunity to work on EHR data. Ehsan is also a visiting scientist at National Neuroscience Institute (NNI) where he is involved in many projects in the area of Parkinson, Dementia, Movement Disorders, Epilepsy, Alzheimer and Cognitive outcomes.

As a part of Ehsan’s international collaborations, he has been actively leading joint projects with New York University (USA), Brock University (Canada), University of Malaya (Malaysia), University of São Paulo (Brazil), Mashhad University of Medical Sciences (Iran) and Universiti Teknologi Malaysia (Malaysia). Over the years, he has served as a reviewer for several research funding agencies, including the National Medical Research Council (NMRC), and as a reviewer/editorial board of scientific journals. Ehsan has 80 scientific publications (including 20 first/corresponding/last author) and 20 presentations in national/international seminar/conferences.

Here is the link to his Google Scholar citation page.

Feel free to check out Dr Saffari’s lab members at: https://blog.nus.edu.sg/ehsansaffari/members/

Modelling the Distribution of Cognitive Outcomes for Early-Stage Neurocognitive Disorders: A Model Comparison Approach.

Biomedicines – Saffari Seyed Ehsan; Soo See Ann; Mohammadi Raziyeh; Ng Kok Pin; Greene William; Kandiah Negaenderan (2024)

12 (2);

Proper Use of Multiple Imputation and Dealing with Missing Covariate Data.

World neurosurgery – Saffari Seyed Ehsan; Volovici Victor; Ong Marcus Eng Hock; Goldstein Benjamin Alan; Vaughan Roger; Dammers Ruben; Steyerberg Ewout W; Liu Nan (2022)

161 284-290

AutoScore-Ordinal: an interpretable machine learning framework for generating scoring models for ordinal outcomes.

BMC medical research methodology – Saffari Seyed Ehsan; Ning Yilin; Xie Feng; Chakraborty Bibhas; Volovici Victor; Vaughan Roger; Ong Marcus Eng Hock; Liu Nan (2022)

22 (1);

AutoScore-Imbalance: An interpretable machine learning tool for development of clinical scores with rare events data.

Journal of biomedical informatics – Yuan Han; Xie Feng; Ong Marcus Eng Hock; Ning Yilin; Chee Marcel Lucas; Saffari Seyed Ehsan; Abdullah Hairil Rizal; Goldstein Benjamin Alan; Chakraborty Bibhas; Liu Nan (2022)

129

Application of the Truncated Zero-Inflated Double Poisson for Determining of the Effecting Factors on the Number of Coronary Artery Stenosis.

Computational and mathematical methods in medicine – Orooji Arezoo; Sahranavard Toktam; Shakeri Mohammad-Taghi; Tajfard Mohammad; Saffari Seyed Ehsan (2022)

2022

Bivariate negative binomial regression model with excess zeros and right censoring: an application to Indonesian data.

Journal of applied statistics – Saffari Seyed Ehsan; Allen John Carson (2020)

47 (10); 1901-1914

Frequency of Visiting a Doctor: A right Truncated Count Regression Model with Excess Zeros

Biostatistics and Biometrics Open Access Journal – Saffari SE, Allen JC, Adnan R, Ong SH, Sim SZ, Greene W. (2019)

9 (5); 112-122

Modeling doctor visits using a right-censored zero-inflated Conway–Maxwell Poisson regression.

Communications in Statistics: Case Studies – Saffari SE, Adnan R, Hashemi Fard M, Marchi VAA, Louzada F, Allen JC, Hashemi Fard A, Greene W. (2018)

4 (2); 96-107

Modeling the Infant’s Age at Hospital Admission in Neonatal with Jaundice at the Ghaem Mashhad Hospital Using Count Models with Excess Zeros

Biostatistics and Biometrics Open Access Journal – Bazzazzadeh V, Doosti H, Boskabadi H, Saffari SE, Peyman N, Chesneau Ch.  (2017)

3 (4); 555-620

Regression models for analyzing radiological visual grading studies--an empirical comparison.

BMC medical imaging – Saffari S Ehsan; Löve Áskell; Fredrikson Mats; Smedby Örjan (2015)

15

Hurdle negative binomial regression model with right censored count data

Journal of Statistics and Operations Research Transactions – Saffari SE, Robiah A, Greene W.  (2012)

36 (2); 181-194

Investigating the impact of excess zeros on hurdle generalized Poisson regression model with right censored count data.

Journal of Statistica Neerlandica – Saffari SE, Robiah A, Greene W.  (2012)

67 (1); 67-80

Polygenic Risk Scores in a Prospective Parkinson's Disease Cohort.

Movement disorders : official journal of the Movement Disorder Society – Sia Ming-Wei; Foo Jia-Nee; Saffari Seyed-Ehsan; Wong Aidan Sheng-Yong; Khor Chiea-Chuen; Yuan Jian-Min; Tan Eng-King; Koh Woon-Puay; Tan Louis Chew-Seng (2021)

36 (12); 2936-2940

Encephalitis as a neurological complication of COVID-19: A systematic review and meta-analysis of incidence, outcomes, and predictors.

European journal of neurology – Siow Isabel; Lee Keng Siang; Zhang John J Y; Saffari Seyed Ehsan; Ng Adeline (2021)

28 (10); 3491-3502

The Association Between Diabetes Mellitus and Mild Behavioral Impairment Among Mild Cognitive Impairment: Findings from Singapore.

Journal of Alzheimer's disease : JAD – Soo See Ann; Ng Kok Pin; Wong Fennie; Saffari Seyed Ehsan; Yatawara Chathuri; Ismail Zahinoor; Kandiah Nagaendran (2021)

82 (1); 411-420

Age Moderates Associations of Hypertension, White Matter Hyperintensities, and Cognition.

Journal of Alzheimer's disease : JAD – Guevarra Anne Cristine; Ng Sheng Chun; Saffari Seyed Ehsan; Wong Benjamin Yi Xin; Chander Russell Jude; Ng Kok Pin; Kandiah Nagaendran (2020)

75 (4); 1351-1360

Physical Activity Improves Anxiety and Apathy in Early Parkinson's Disease: A Longitudinal Follow-Up Study.

Frontiers in neurology – Ng Samuel Yong-Ern; Chia Nicole Shuang-Yu; Abbas Mirza Masoom; Saffari Ehsan Seyed; Choi Xinyi; Heng Dede Liana; Xu Zheyu; Tay Kay-Yaw; Au Wing-Lok; Tan Eng-King; Tan Louis Chew-Seng (2020)

11

Subjective cognitive Complaints in early Parkinson's disease patients with normal cognition are associated with affective symptoms.

Parkinsonism & related disorders – Chua Cong Yang; Koh Matthew Rui En; Chia Nicole Shuang-Yu; Ng Samuel Yong-Ern; Saffari Seyed Ehsan; Wen Ming-Ching; Chen Regina Yu-Ying; Choi Xinyi; Heng Dede Liana; Neo Shermyn Xiumin; Tay Kay Yaw; Au Wing Lok; Tan Eng-King; Tan Louis Chew-Seng; Xu Zheyu (2021)

82 24-28

Progression of sleep disturbances in Parkinson's disease: a 5-year longitudinal study.

Journal of neurology – Xu Zheyu; Anderson Kirstie N; Saffari Seyed Ehsan; Lawson Rachael A; Chaudhuri K Ray; Brooks David; Pavese Nicola (2021)

268 (1); 312-320

Utility of plasma Neurofilament light as a diagnostic and prognostic biomarker of the postural instability gait disorder motor subtype in early Parkinson's disease.

Molecular neurodegeneration – Ng Adeline Su Lyn; Tan Yi Jayne; Yong Alisa Cui Wen; Saffari Seyed Ehsan; Lu Zhonghao; Ng Ebonne Yulin; Ng Samuel Yong Ern; Chia Nicole Shuang Yu; Choi Xinyi; Heng Dede; Neo Shermyn; Xu Zheyu; Keong Nicole Chwee Har; Tay Kay Yaw; Au Wing Lok; Tan Louis Chew Seng; Tan Eng-King (2020)

15 (1);