Data Analytic Services

About Our Service Group

The Health Data Analytics Group (HDAG) provides high-quality data management and analytic services to researchers. Our data management expertise includes database design and implementation, data processing, and data quality control to ensure valid and precise data.

Our team also has the expertise to design and perform quantitative analyses such as power/sample size calculation and biostatistical analyses.

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SDSU researchers and SDSU HealthLINK Center partners receive competitive pricing at all stages of research.

Service not listed? Send an inquiry to
HealthLINK.services@sdsu.edu.

Services available

How We Support Your Research

Select a service below for details.

Consultation

Research study design & randomization

Build a strong foundation for your research with statistically sound study designs.

We can help with:

  • Randomized Controlled Trials (RCTs)
  • Cluster Randomized Trials
  • Stratified Randomization
  • Stepped Wedge Designs
  • Factorial Designs
  • Experimental Study Design
  • Block and Stratified Randomization Methods

 

Artificial Intelligence & inference model building

Transform complex data into meaningful insights using machine learning and AI.

Services include:

  • Collecting sensor data
    • Physiological data on clinical instruments (e.g., MRI image processing, AI feature extraction & analysis)
    • Data from commercial sensors (Fitbit, Actigraphy, etc.) or new/custom sensors
  • Matching sensor data with Ecological Momentary Assessments
  • Building & training AI models
    • Measuring stress level from Garmin Beat-Beat Interval (BBI) data
    • Human pose and gait classification using acceleration and orientation sensor measurement, and computer vision models

 

Scientific Data Visualization

Communicate your findings clearly and effectively.

We provide consultation for:

  • Publication-quality figures
  • Interactive dashboards
  • Multi-dimensional graphics 
  • Statistical graphics

Database & processing

  • Database design and setup consultation
  • Training and consultation for data processing
    • Data cleaning (including sensor data cleaning)
    • Variable transformation (e.g., recode and compute variables)

 

Data manipulation

  • Assistance for data manipulation (e.g., dataset merging, dataset reshape [wide to long; long to wide]) 

Please note that the HDAG team will expect the data to be cleaned prior to submission for data analysis.

Power & biostatistics

  • Power and sample size calculation
  • Biostatistical data analysis
    • Comparing means (e.g., t-tests, ANOVA, ANCOVA)
    • Regression models (linear, logistic, binary, ordinal, count and other outcomes)
    • Multivariate models
    • Multilevel mixed-effect models (mixed-effects linear/non-linear regression; cluster adjustment for clustered RCTs)
    • Repeated measure / longitudinal data analysis (GEE, GLM)
    • Mediation analysis
    • Complex-weighted survey analysis
    • Survival analysis
    • Measurement error models
    • Analysis using missing imputation
 
Trainings & workshops

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Future workshop opportunities

Build your skills with us

Data Science Training

Introduction to Machine Learning

Data Science Training

Introduction to Data Science with Python

Meet Our Team

A transdisciplinary team spanning statistics, public health, engineering, geography, and psychology.

Chii-Dean Lin, PhD

Chii-Dean (Joey) Lin, Ph.D.

Professor, SDSU Dept of Mathematics & Statistics

Lead Biostatistician and Co-Leader of the Health Data Analytic Group at the SDSU HealthLINK Center

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Shih-Fan Lin, DrPH

Shih-Fan (Sam) Lin, DrPH

Research Associate Professor, SDSU School of Public Health

Co-Leader, Health Data Analytic and Measurement Methods Groups at the SDSU HealthLINK Center

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Kee Moon, PhD

Kee Moon, Ph.D.

Professor, SDSU Department of Mechanical Engineering

Co-Leader of the Health Sensor Methods Group and Data Science Training Initiative at the SDSU HealthLINK Center

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Christopher Paolini, Ph.D.

Associate Professor, SDSU Department of Electrical and Computer Engineering

Co-Investigator, Health Data Analytic Group and Data Science Training Initiative at the SDSU HealthLINK Center

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Arjan Van Der Star, Ph.D., M.S.

Research Associate Professor, SDSU Department of Psychology

Co-Investigator, Health Data Analytics Group at the SDSU HealthLINK Center

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Jee-Jin Jun, MPH, ScD

Hee-Jin Jun, Ph.D.

Adjunct Assistant Professor, SDSU School of Public Health

Co-Investigator, Health Data Analytics Group at the SDSU HealthLINK Center

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Atsushi Nara, Ph.D.

Associate Professor, SDSU Department of Geography

Associate Director of the Center for Human Dynamics in the Mobile Age

Co-Investigator, Health Data Analytics Group at the SDSU HealthLINK Center

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Sung Lee, Ph.D.

Adjunct Faculty, SDSU Department of Mechanical Engineering

Health Sensor Methods Group and Data Science Training Initiative Coordinator at the SDSU HealthLINK Center

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Yaritza Benitez

Health Data Analytics Group and Measurement Methods Coordinator at the SDSU HealthLINK Center

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Cristian Garcia Alcaraz, Ph.D., M.S.

Health Data Analytics Group Research Assistant , Health Data Analytics Group at the SDSU HealthLINK Center

Karin Funaki, MS Candidate

Health Data Analytics Group and Measurement Methods Research Assistant at the SDSU HealthLINK Center

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