Publications

Predicting risk of suicidal behavior from insurance claims data vs. linked data from insurance claims and electronic health records.

Pharmacoepidemiol Drug Saf
Simon GE, Shortreed SM, Johnson E, Yaseen ZS, Stone M, Mosholder AD, Ahmedani BK, Coleman KJ, Coley RY, Penfold RB, Toh S

Data-driven automated classification algorithms for acute health conditions: applying PheNorm to COVID-19 disease.

J Am Med Inform Assoc
Smith JC, Williamson BD, Cronkite DJ, Park D, Whitaker JM, McLemore MF, Osmanski JT, Winter R, Ramaprasan A, Kelley A, Shea M, Wittayanukorn S, Stojanovic D, Zhao Y, Toh S, Johnson KB, Aronoff DM, Carrell DS

Association Between Use of Fluoroquinolones and Risk of Mitral or Aortic Valve Regurgitation: A Nationwide Cohort Study.

Clin Pharmacol Ther
Dong YH, Wang JL, Chang CH, Lin JW, Chen YA, Chen CY, Toh S

Corticosteroids but not Anti-TNF Are Associated With Increased COVID-19 Complications in Patients With Inflammatory Bowel Disease.

Inflamm Bowel Dis
Long MD, Parlett L, Lewis JD, Haynes K, Adimadhyam S, Hou L, Wolfe A, Toh S, Burris J, Dorand J, Kappelman MD

Combining meta-analysis with multiple imputation for one-step, privacy-protecting estimation of causal treatment effects in multi-site studies.

Res Synth Methods
Shu D, Li X, Her Q, Wong J, Li D, Wang R, Toh S

External validity in distributed data networks.

Pharmacoepidemiol Drug Saf
Webster-Clark M, Toh S, Arnold J, McTigue KM, Carton T, Platt R

Utilization, user characteristics, and adverse outcomes of insulin glargine originators and follow-on drug in patients with diabetes in the United States.

J Manag Care Spec Pharm
Rai A, Nam YH, Mendelsohn AB, Marshall J, McDermott CL, Toh S, Lockhart CM

Distributed Cox proportional hazards regression using summary-level information.

Biostatistics
Li D, Lu W, Shu D, Toh S, Wang R

Real-world Evidence Comparing Tofacitinib and Vedolizumab in Anti-TNF-experienced Patients With Ulcerative Colitis.

Inflamm Bowel Dis
Adimadhyam S, Lewis JD, Simon AL, Wolfe AE, Smith S, Hou L, Moyneur É, Reynolds JS, Toh S, Dobes A, Parlett L, Haynes K, Burris J, Dorand JE, Long MD, Kappelman MD

Preoperative Depression Status and 5 Year Metabolic and Bariatric Surgery Outcomes in the PCORnet Bariatric Study Cohort

Imputing Missing Covariates in Time-to-event Analysis within Distributed Research Networks: A Simulation Study.

Pharmacoepidemiol Drug Saf
Li D, Wong J, Li X, Toh S, Wang R

Association Between Regular Laxative Use and Incident Dementia in UK Biobank Participants.

Neurology
Yang Z, Wei C, Li X, Yuan J, Gao X, Li B, Zhao Z, Toh S, Yu X, Brayne C, Yang Z, Sha F, Tang J

The Authors' Reply: Statins and post-stroke dementia.

Eur J Epidemiol
Yang Z, Toh S, Mant J

Using the IMEDS distributed database for epidemiological studies in type 2 diabetes mellitus.

BMJ Open Diabetes Res Care
Huang TY, Rodriguez-Watson C, Wang T, Calhoun SR, Marshall J, Burk J, Nam YH, Mendelsohn AB, Jamal-Allial A, Greenlee RT, Selvan M, Pawloski PA, McMahill Walraven CN, Rai A, Toh S, Brown JS

Assessing the impact of privacy-preserving record linkage on record overlap and patient demographic and clinical characteristics in PCORnet®, the National Patient-Centered Clinical Research Network.

J Am Med Inform Assoc
Marsolo K, Kiernan D, Toh S, Phua J, Louzao D, Haynes K, Weiner M, Angulo F, Bailey C, Bian J, Fort D, Grannis S, Krishnamurthy AK, Nair V, Rivera P, Silverstein J, Zirkle M, Carton T

Real-World Evidence Comparing Vedolizumab and Ustekinumab in Antitumor Necrosis Factor-Experienced Patients With Crohn's Disease.

Am J Gastroenterol
Kappelman MD, Adimadhyam S, Hou L, Wolfe AE, Smith S, Simon AL, Moyneur É, Reynolds JS, Toh S, Dobes A, Parlett LE, Haynes K, Selvan M, Ma Q, Nair V, Burris J, Dorand JE, Dawwas GK, Lewis JD, Long MD

Assessing medical product safety during pregnancy using parameterizable tools in the sentinel distributed database.

Pharmacoepidemiol Drug Saf
Lyons JG, Suarez EA, Fazio-Eynullayeva E, Maro JC, Corey C, Li J, Toh S, Shinde MU

High-dimensional propensity scores for empirical covariate selection in secondary database studies: planning, implementation, and reporting.

Pharmacoepidemiol Drug Saf
Rassen JA, Blin P, Kloss S, Neugebauer RS, Platt RW, Pottegård A, Schneeweiss S, Toh S

Establishing a framework for privacy-preserving record linkage among electronic health record and administrative claims databases within PCORnet, the National Patient-Centered Clinical Research Network.

BMC Res Notes
Kiernan D, Carton T, Toh S, Phua J, Zirkle M, Louzao D, Haynes K, Weiner M, Angulo F, Bailey C, Bian J, Fort D, Grannis S, Krishnamurthy AK, Nair V, Rivera P, Silverstein J, Marsolo K

The US Food and Drug Administration Sentinel System: a national resource for a learning health system.

J Am Med Inform Assoc
Brown JS, Mendelsohn AB, Nam YH, Maro JC, Cocoros NM, Rodriguez-Watson C, Lockhart CM, Platt R, Ball R, Dal Pan GJ, Toh S