Nicholas Williams

Columbia University — United States

Mathematics · Physical Sciences

12h-index361citations63works2.02yr avg
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Research Topics

Advanced Causal Inference Techniques(19), Opioid Use Disorder Treatment(13), Foot and Ankle Surgery(7), Health Systems, Economic Evaluations, Quality of Life(7), Statistical Methods and Inference(6)

Publications63 total

Risk of Opioid Use Disorder in Surgical Patients with Medicaid and Associations with Prescription Opioid Dose and Duration
Journal of Pain Research·2025Open Access
Thresholds for adjunctive medication usage and probability of initiating injectable naltrexone
Addiction·2025Open Access
Reducing Prescription Opioid Dose and Duration to Reduce Risk of Opioid Use Disorder Among Patients With Musculoskeletal Pain
Epidemiology·2025Open Access
Riesz representers for the rest of us
arXiv (Cornell University)·2025Open Access
Comment on “Do we need flexible machine-learning algorithms to assess the effect of long-term exposure to fine particulate matter on mortality?”
Environmental Epidemiology·2025· 1 citedOpen Access
Two-stage targeted minimum-loss based estimation for non-negative two-part outcomes
Statistical Methods in Medical Research·2025Open Access
Opioid dose, duration, and risk of use disorder in Medicaid patients with musculoskeletal pain
Pain Medicine·2025Open Access
Nonparametric estimation of an optimal treatment rule with fused randomized trials and missing effect modifiers
arXiv (Cornell University)·2025Open Access
Re: Don’t Let Your Analysis Go to Seed: On the Impact of Random Seed on Machine Learning-based Causal Inference
Epidemiology·2025· 5 cited
Mediation of chronic pain and disability on opioid use disorder risk by pain management practices among adult Medicaid patients, 2016-2019
American Journal of Epidemiology·2025
Author correction to: “causal survival analysis under competing risks using longitudinal modified treatment policies”
Lifetime Data Analysis·2025
transportr: Transporting Intervention Effects from One Population to Another
2025Open Access
ife: Autodiff for Influence Function Based Estimates
2024Open Access
crumble: Flexible and General Mediation Analysis Using Riesz Representers
2024· 1 citedOpen Access
mlr3superlearner: Super Learner Fitting and Prediction
2024· 2 citedOpen Access
General targeted machine learning for modern causal mediation analysis
arXiv (Cornell University)·2024· 3 citedOpen Access
Studying Continuous, Time-varying, and/or Complex Exposures Using Longitudinal Modified Treatment Policies
Epidemiology·2024· 15 cited
Pain Management Treatments and Opioid Use Disorder Risk in Medicaid Patients
American Journal of Preventive Medicine·2024· 7 citedOpen Access
Learning optimal dynamic treatment regimes from longitudinal data
American Journal of Epidemiology·2024· 3 citedOpen Access
Tachol1 QTL on mouse chromosome 1 is responsible for hypercholesterolemia and diet-induced obesity
Mammalian Genome·2024· 2 citedOpen Access
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Frequent Co-authors

Iván Díaz(23), Kara E. Rudolph(19), Eric A. Hoffman(7), Matthew S. Conti(5), Scott J. Ellis(5), Jonathan Day(4), Edward J. Schenck(3), Jonathan T. Deland(3), Katherine L. Hoffman(3), Sarah Forrest(3), Michael J. Satlin(2), William Whalen(2), Di Pan(2), Mark C. Drakos(2), Michael Rosenblum(2), Sean X. Luo(2), John Rotrosen(2), Edward V. Nunes(2), Jaeyoung Kim(2), Ashutosh Kacker(2)