Michael Kohn, MD, MPP
Professor
Epidemiology & Biostatistics
School of Medicine

He also provides study design consultations to clinical investigators through the CTSI Consulting Service and created the UCSF CTSI’s online sample size calculators (www.sample-size.net). He is an expert on database management for clinical research, both setting up study databases and extracting data from the electronic health record.

Dr. Kohn has been teaching in the Training in Clinical Research (TICR) Program since 2000, including 10 years (until 2012) as co-director, lecturer, and section leader in the program's flagship "Designing Clinical Research" course. He directs the courses on data management for clinical research (Epi 218) and clinical epidemiology (Epi 204), leads one of the two second-year master’s seminars, and directs the UCSF Workshop on Evidence-Based Diagnosis. With Thomas B. Newman, he co-authored the clinical epidemiology textbook “Evidence-Based Diagnosis” and is a contributing author to Hulley et al, “Designing Clinical Research.”

• Effect of Rapid Rollover on Pneumothorax Rate after Percutaneous CT-Guided Lung Biopsy: A Multicenter, Randomized Controlled Trial.
  Journal of vascular and interventional radiology : JVIR 2024 Leng L, Li AT, Lokken RP, Kohn M, Wu X, Sohn JH
• Response to Sensitivity of the Glycemia Risk Index to Effects of Automated Insulin Delivery Initiation.
  Journal of diabetes science and technology 2023 Klonoff DC, Kohn MA, Rodbard D, Aaron RE, Tian T
• The Need for a Modern Error Grid for Clinical Accuracy of Blood Glucose Monitors and Continuous Glucose Monitors.
  Journal of diabetes science and technology 2023 Tian T, Aaron RE, Kohn MA, Klonoff DC
• Artificial Intelligence and the Evaluation and Treatment of Stroke.
  Delaware journal of public health 2023 Dresser LP, Kohn MA
• The walking man approach to interpreting the receiver operating characteristic curve and area under the receiver operating characteristic curve.
  Journal of clinical epidemiology 2023 Kohn MA, Newman TB
• Comparing tests in the absence of a reference standard.
  Thorax 2023 Kohn MA
• Association of an Emergency Critical Care Program With Survival and Early Downgrade Among Critically Ill Medical Patients in the Emergency Department.
  Critical care medicine 2023 Mitarai T, Gordon AJ, Nudelman MJR, Urdaneta AE, Nesbitt JL, Niknam K, Graber-Naidich A, Wilson JG, Kohn MA
• A Pilot Randomized Clinical Trial of Early Ambulation after Groin Reconstruction with Sartorius Muscle Flaps.
  Plastic and reconstructive surgery. Global open 2022 Nguyen AB, Kohn MA, Lentz R, Hansen SL
• Utility of prehospital call center ambulance dispatch data for COVID-19 cluster surveillance: A retrospective analysis.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2022 Janagama SR, Strehlow MC, Rao RGV, Kohn MA, Newberry JA
• Validity of at-home rapid antigen lateral flow assay and artificial intelligence read to detect SARS-CoV-2.
  Diagnostic microbiology and infectious disease 2022 Richardson S, Kohn MA, Bollyky J, Parsonnet J
• Is AVPU comparable to GCS in critical prehospital decisions? - A cross-sectional study.
  The American journal of emergency medicine 2022 Janagama SR, Newberry JA, Kohn MA, Rao GVR, Strehlow MC, Mahadevan SV
• Diagnostic accuracy of point-of-care ultrasonography for intussusception in children: A systematic review and meta-analysis.
  The American journal of emergency medicine 2022 Lin-Martore M, Firnberg MT, Kohn MA, Kornblith AE, Gottlieb M
• Association of Body Lice Infestation With Hemoglobin Values in Hospitalized Dermatology Patients.
  JAMA dermatology 2022 Rudd N, Zakaria A, Kohn MA, Amerson EH, Fox LP, Linos E, Chang AY
• External validation of the 4C Mortality Score for hospitalised patients with COVID-19 in the RECOVER network.
  BMJ open 2022 Gordon AJ, Govindarajan P, Bennett CL, Matheson L, Kohn MA, Camargo C, Kline J
• A Glycemia Risk Index (GRI) of Hypoglycemia and Hyperglycemia for Continuous Glucose Monitoring Validated by Clinician Ratings.
  Journal of diabetes science and technology 2022 Klonoff DC, Wang J, Rodbard D, Kohn MA, Li C, Liepmann D, Kerr D, Ahn D, Peters AL, Umpierrez GE, Seley JJ, Xu NY, Nguyen KT, Simonson G, Agus MSD, Al-Sofiani ME, Armaiz-Pena G, Bailey TS, Basu A, …
• Studies of diagnostic test accuracy: Partial verification bias and test result-based sampling.
  Journal of clinical epidemiology 2022 Kohn MA
• SARS COV-2 anti-nucleocapsid and anti-spike antibodies in an emergency department healthcare worker cohort: September 2020 - April 2021.
  The American journal of emergency medicine 2022 Wang RC, Murphy CE, Kornblith AE, Hohenstein NA, Carter CM, Wong AHK, Kurtz T, Kohn MA
• Selection bias in estimating the relationship between prolonged ED boarding and mortality in emergency critical care patients.
  Journal of the American College of Emergency Physicians open 2022 Gardner K, Gordon AJ, Shannon B, Nesbitt J, Wilson JG, Mitarai T, Kohn MA
• Compression Therapy for HIV-Associated Kaposi Sarcoma Leg Lymphedema: Results of the Kenyan Improvised Compression for Kaposi Sarcoma Randomized Controlled Trial.
  JCO global oncology 2022 Chang AY, Karwa R, Odhiambo H, Were P, Fletcher SL, Tonui EC, Kohn MA, Lee J, Chang D, Lensing S, Namaemba DF, Busakhala N, Kiprono SK, Maurer T, Goodrich S, Pastakia SD
• Risk Factors for Peri-intubation Cardiac Arrest in a Pediatric Emergency Department.
  Pediatric emergency care 2022 Pokrajac N, Sbiroli E, Hollenbach KA, Kohn MA, Contreras E, Murray M
• Concurrent and overlapping surgery: perspectives from surgeons on spinal posterior instrumented fusion for adolescent idiopathic scoliosis.
  Journal of children's orthopaedics 2021 Allahabadi S, Wu HH, Allahabadi S, Woolridge T, Kohn MA, Diab M
• Natural language processing of head CT reports to identify intracranial mass effect: CTIME algorithm.
  The American journal of emergency medicine 2021 Gordon AJ, Banerjee I, Block J, Winstead-Derlega C, Wilson JG, Mitarai T, Jarrett M, Sanyal J, Rubin DL, Wintermark M, Kohn MA
• The ulnar artery: A site suitable for arterial cannulation in pediatric patients.
  Paediatric anaesthesia 2021 Roux J, Kohn MA, Sinskey J, Nguyen H, Boor M, Rouine-Rapp K
• Key concepts in clinical epidemiology: reporting on the accuracy of continuous tests.
  Journal of clinical epidemiology 2021 Kohn MA
• Utilization of Point-of-care Echocardiography in Cardiac Arrest: A Cross-sectional Pilot Study.
  The western journal of emergency medicine 2021 Wolfe Y, Duanmu Y, Lobo V, Kohn MA, Anderson KL
• Prehospital Identification of Large Vessel Occlusions Using Modified National Institutes of Health Stroke Scale: A Pilot Study.
  Frontiers in neurology 2021 Mulkerin WD, Spokoyny I, Francisco JT, Lima B, Corry MD, Nudelman MJR, Niknam K, Brown IP, Kohn MA, Govindarajan P
• SARS-CoV-2 IgG Seropositivity and Acute Asymptomatic Infection Rate among Firefighter First Responders in an Early Outbreak County in California.
  Prehospital emergency care 2021 Newberry JA, Gautreau M, Staats K, Carrillo E, Mulkerin W, Yang S, Kohn MA, Matheson L, Boyd SD, Pinsky BA, Blomkalns AL, Strehlow MC, D'Souza PA
• Rates of Serious Surgical Errors in California and Plans to Prevent Recurrence.
  JAMA network open 2021 Cohen AJ, Lui H, Zheng M, Cheema B, Patino G, Kohn MA, Enriquez A, Breyer BN
• Lack of association between either outpatient or inpatient glycemic control and COVID-19 illness severity or mortality in patients with diabetes.
  BMJ open diabetes research & care 2021 Mehta PB, Kohn MA, Koliwad SK, Rushakoff RJ
• Pupillary unrest, opioid intensity, and the impact of environmental stimulation on respiratory depression.
  Journal of clinical monitoring and computing 2021 McKay RE, Kohn MA, Larson MD
• Prevalence of SARS-Cov-2 Antibodies in Emergency Medicine Healthcare Workers.
  Annals of emergency medicine 2021 Wang RC, Murphy CE, Kornblith AE, Kurtz T, Kohn MA
• Effect of emergency critical care nurses and emergency department boarding time on in-hospital mortality in critically ill patients.
  The American journal of emergency medicine 2020 Nesbitt J, Mitarai T, Chan GK, Wilson JG, Niknam K, Nudelman MJR, Cinkowski C, Kohn MA
• eccSOFA: SOFA illness severity score adapted to predict in-hospital mortality in emergency critical care patients.
  The American journal of emergency medicine 2020 Niknam K, Nesbitt J, Mitarai T, Nudelman MJR, Gordon AJ, Wilson JG, Kohn MA
• Concurrent validity of the Warner Initial Developmental Evaluation of Adaptive and Functional Skills and the Bayley Scales of Infant and Toddler Development, Third Edition.
  Developmental medicine and child neurology 2020 Peyton C, Msall ME, Wroblewski K, Rogers EE, Kohn M, Glass HC
• Evaluation of two portable pupillometers to assess clinical utility.
  Concussion (London, England) 2020 McKay RE, Kohn MA, Schwartz ES, Larson MD
• Identification of Generalized Convulsive Status Epilepticus from Emergency Medical Service Records: A Validation Study of Diagnostic Coding.
  Prehospital emergency care 2020 Hart L, Sanford JK, Sporer KA, Kohn MA, Guterman EL
• Diagnostic Accuracy of Point-of-Care Ultrasound for Intussusception in Children Presenting to the Emergency Department: A Systematic Review and Meta-analysis.
  The western journal of emergency medicine 2020 Lin-Martore M, Kornblith AE, Kohn MA, Gottlieb M
• Defining High-risk Emergency Chief Complaints: Data-driven Triage for Low- and Middle-income Countries.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2020 Rice B, Leanza J, Mowafi H, Thadeus Kamara N, Mugema Mulogo E, Bisanzo M, Nikam K, Kizza H, Newberry JA, Strehlow M, Global Emergency Care Investigator Group, Kohn M
• The Effect of Chest Compression Location and Occlusion of the Aorta in a Traumatic Arrest Model.
  The Journal of surgical research 2020 Anderson KL, Morgan JD, Castaneda MG, Boudreau SM, Araña AA, Kohn MA, Bebarta VS
• Impact of Scribes with Flow Coordination Duties on Throughput in an Academic Emergency Department.
  The western journal of emergency medicine 2020 Thomas K, Marcum J, Wagner A, Kohn MA
• A Review of Predictive Low Glucose Suspend and Its Effectiveness in Preventing Nocturnal Hypoglycemia.
  Diabetes technology & therapeutics 2019 Chen E, King F, Kohn MA, Spanakis EK, Breton M, Klonoff DC
• Patient safety and quality outcomes for ED patients admitted to alternative care area inpatient beds.
  The American journal of emergency medicine 2019 Lee MO, Arthofer R, Callagy P, Kohn MA, Niknam K, Camargo CA, Shen S
• ED Chest Pain Rules: Follow Your HEART?
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2019 Kohn MA, Worster A
• Validating laboratory defined chronic kidney disease in the electronic health record for patients in primary care.
  BMC nephrology 2019 Frigaard M, Rubinsky A, Lowell L, Malkina A, Karliner L, Kohn M, Peralta CA
• Randomized controlled trial to evaluate locally sourced two-component compression bandages for HIV-associated Kaposi sarcoma leg lymphedema in western Kenya: The Kenyan Improvised Compression for Kaposi Sarcoma (KICKS) study protocol.
  Contemporary clinical trials communications 2018 Chang AY, Karwa R, Busakhala N, Fletcher SL, Tonui EC, Wasike P, Kohn MA, Asirwa FC, Kiprono SK, Maurer T, Goodrich S, Pastakia SD
• The Epidemiology of Vestibular Migraine: A Population-based Survey Study.
  Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology 2018 Formeister EJ, Rizk HG, Kohn MA, Sharon JD
• Investigation of the Accuracy of 18 Marketed Blood Glucose Monitors.
  Diabetes care 2018 Klonoff DC, Parkes JL, Kovatchev BP, Kerr D, Bevier WC, Brazg RL, Christiansen M, Bailey TS, Nichols JH, Kohn MA
• Effect of park prescriptions with and without group visits to parks on stress reduction in low-income parents: SHINE randomized trial.
  PloS one 2018 Razani N, Morshed S, Kohn MA, Wells NM, Thompson D, Alqassari M, Agodi A, Rutherford GW
• Hospitalizations for Autoimmune Hepatitis Disproportionately Affect Black and Latino Americans.
  The American journal of gastroenterology 2018 Wen JW, Kohn MA, Wong R, Somsouk M, Khalili M, Maher J, Tana MM
• In suspected PE, 2% of patients with a Wells score > 4 and negative CT pulmonary angiography had VTE at 3 months.
  Annals of internal medicine 2017 Kohn MA
• D-dimer Interval Likelihood Ratios for Pulmonary Embolism.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2017 Kohn MA, Klok FA, van Es N
• Association Between a Virtual Glucose Management Service and Glycemic Control in Hospitalized Adult Patients: An Observational Study.
  Annals of internal medicine 2017 Rushakoff RJ, Sullivan MM, MacMaster HW, Shah AD, Rajkomar A, Glidden DV, Kohn MA
• Design and evaluation of a park prescription program for stress reduction and health promotion in low-income families: The Stay Healthy in Nature Everyday (SHINE) study protocol.
  Contemporary clinical trials 2016 Razani N, Kohn MA, Wells NM, Thompson D, Hamilton Flores H, Rutherford GW
• Early Cumulative Supplemental Oxygen Predicts Bronchopulmonary Dysplasia in High Risk Extremely Low Gestational Age Newborns.
  The Journal of pediatrics 2016 Wai KC, Kohn MA, Ballard RA, Truog WE, Black DM, Asselin JM, Ballard PL, Rogers EE, Keller RL, Trial of Late Surfactant (TOLSURF) Study Group
• Broadcasting Not Properly: Using B-type Natriuretic Peptide Interval Likelihood Ratios and the Results of Other Emergency Department Tests to Diagnose Acute Heart Failure in Dyspneic Patients.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2016 Kohn MA, Steinhart B
• Outpatient Versus Hospitalization Management for Uncomplicated Diverticulitis.
  Annals of surgery 2015 Kohn MA
• Predictors of infection from dog bite wounds: which patients may benefit from prophylactic antibiotics?
  Emergency medicine journal : EMJ 2015 Tabaka ME, Quinn JV, Kohn MA, Polevoi SK
• HINTS to identify stroke in ED patients with dizziness.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2014 Kohn MA
• Understanding evidence-based diagnosis.
  Diagnosis (Berlin, Germany) 2014 Kohn MA
• Understanding the direction of bias in studies of diagnostic test accuracy.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2013 Kohn MA, Carpenter CR, Newman TB
• Rotational malreduction of the syndesmosis: reliability and accuracy of computed tomography measurement methods.
  Foot & ankle international 2013 Knops SP, Kohn MA, Hansen EN, Matityahu A, Marmor M
• Traumatic lacerations: what are the risks for infection and has the 'golden period' of laceration care disappeared?
  Emergency medicine journal : EMJ 2013 Quinn JV, Polevoi SK, Kohn MA
• Determination of bone age in pediatric patients with Crohn's disease should become part of routine care.
  Inflammatory bowel diseases 2013 Gupta N, Lustig RH, Kohn MA, Vittinghoff E
• Menarche in pediatric patients with Crohn's disease.
  Digestive diseases and sciences 2012 Gupta N, Lustig RH, Kohn MA, Vittinghoff E
• Reduced lung-cancer mortality with CT screening.
  The New England journal of medicine 2011 Kohn MA
• Sex differences in statural growth impairment in Crohn's disease: role of IGF-1.
  Inflammatory bowel diseases 2011 Gupta N, Lustig RH, Kohn MA, McCracken M, Vittinghoff E
• Increasing discussions of intimate partner violence in prenatal care using Video Doctor plus Provider Cueing: a randomized, controlled trial.
  Women's health issues : official publication of the Jacobs Institute of Women's Health 2010 Humphreys J, Tsoh JY, Kohn MA, Gerbert B
• Emergency physician ultrasonography for evaluating patients at risk for ectopic pregnancy: a meta-analysis.
  Annals of emergency medicine 2010 Stein JC, Wang R, Adler N, Boscardin J, Jacoby VL, Won G, Goldstein R, Kohn MA
• Heightened pain perception in illicit substance-using patients in the ED: implications for management.
  The American journal of emergency medicine 2010 Neighbor ML, Dance TR, Hawk M, Kohn MA
• When is rapid testing for influenza useful?
  Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2010 Hersh AL, Kohn MA, Newman TB
• Basal cell carcinoma chemoprevention with nonsteroidal anti-inflammatory drugs in genetically predisposed PTCH1+/- humans and mice.
  Cancer prevention research (Philadelphia, Pa.) 2010 Tang JY, Aszterbaum M, Athar M, Barsanti F, Cappola C, Estevez N, Hebert J, Hwang J, Khaimskiy Y, Kim A, Lu Y, So PL, Tang X, Kohn MA, McCulloch CE, Kopelovich L, Bickers DR, Epstein EH
• Promoting smoking cessation in pregnancy with Video Doctor plus provider cueing: a randomized trial.
  Acta obstetricia et gynecologica Scandinavica 2010 Tsoh JY, Kohn MA, Gerbert B
• Result categories for ventilation-perfusion scintigraphy.
  Radiology 2009 Kohn MA, Fahimi J, Newman TB, Sostman HD, Stein PD, Hull RD
• Ascites improves upon [corrected] serum sodium plus [corrected] model for end-stage liver disease (MELD) for predicting mortality in patients with advanced liver disease.
  Alimentary pharmacology & therapeutics 2009 Somsouk M, Guy J, Biggins SW, Vittinghoff E, Kohn MA, Inadomi JM
• Universal primer polymerase chain reaction looks promising for newborns with low pretest probability of sepsis.
  Archives of pediatrics & adolescent medicine 2009 Newman TB, Kohn MA
• Arrhythmogenic right ventricular cardiomyopathy.
  The New England journal of medicine 2009 Kohn MA, Newman TB
• Burden of eating disorders in 5-13-year-old children in Australia.
  The Medical journal of Australia 2009 Madden S, Morris A, Zurynski YA, Kohn M, Elliot EJ
• Evidence-Based Diagnosis
  Evidence-Based Diagnosis 2009 Thomas B. Newman and Michael A. Kohn
• Interunit and intraunit reliability of the RT3 triaxial accelerometer.
  Journal of physical activity & health 2008 Krasnoff JB, Kohn MA, Choy FK, Doyle J, Johansen K, Painter PL
• Cueing prenatal providers effects on discussions of intimate partner violence.
  American journal of preventive medicine 2008 Calderón SH, Gilbert P, Jackson R, Kohn MA, Gerbert B
• Trends in opioid prescribing by race/ethnicity for patients seeking care in US emergency departments.
  JAMA 2008 Pletcher MJ, Kertesz SG, Kohn MA, Gonzales R
• Death after emergency department visits for syncope: how common and can it be predicted?
  Annals of emergency medicine 2007 Quinn J, McDermott D, Kramer N, Yeh C, Kohn MA, Stiell I, Wells G
• Prospective validation of the San Francisco Syncope Rule to predict patients with serious outcomes.
  Annals of emergency medicine 2006 Quinn J, McDermott D, Stiell I, Kohn M, Wells G
• The effects of executive and behavioral dysfunction on the course of ALS.
  Neurology 2005 Olney RK, Murphy J, Forshew D, Garwood E, Miller BL, Langmore S, Kohn MA, Lomen-Hoerth C
• Changing opioid use for right lower quadrant abdominal pain in the emergency department.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2005 Neighbor ML, Baird CH, Kohn MA
• Prevalence of acute myocardial infarction and other serious diagnoses in patients presenting to an urban emergency department with chest pain.
  The Journal of emergency medicine 2005 Kohn MA, Kwan E, Gupta M, Tabas JA
• The San Francisco Syncope Rule vs physician judgment and decision making.
  The American journal of emergency medicine 2005 Quinn JV, Stiell IG, McDermott DA, Kohn MA, Wells GA
• White blood cell count intervals and likelihood ratios for appendicitis.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2005 Kohn MA
• Likelihood ratio reporting.
  Mayo Clinic proceedings 2005 Kohn MA, Michaels AD
• Factors affecting emergency department opioid administration to severely injured patients.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2004 Neighbor ML, Honner S, Kohn MA
• Derivation of the San Francisco Syncope Rule to predict patients with short-term serious outcomes.
  Annals of emergency medicine 2004 Quinn JV, Stiell IG, McDermott DA, Sellers KL, Kohn MA, Wells GA
• Trauma team activation criteria as predictors of patient disposition from the emergency department.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2004 Kohn MA, Hammel JM, Bretz SW, Stangby A
• Beta-human chorionic gonadotropin levels and the likelihood of ectopic pregnancy in emergency department patients with abdominal pain or vaginal bleeding.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2003 Kohn MA, Kerr K, Malkevich D, O'Neil N, Kerr MJ, Kaplan BC
• Lack of association between patient ethnicity or race and fracture analgesia.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2002 Fuentes EF, Kohn MA, Neighbor ML
• Presenting complaint among patients with myocardial infarction who present to an urban, public hospital emergency department.
  Annals of emergency medicine 2002 Gupta M, Tabas JA, Kohn MA
• What white blood cell count should prompt antibiotic treatment in a febrile child? Tutorial on the importance of disease likelihood to the interpretation of diagnostic tests.
  Medical decision making : an international journal of the Society for Medical Decision Making 2001 Kohn MA, Newman MP
• Indications for computed tomography after minor head injury.
  The New England journal of medicine 2000 Kohn MA, Newman TB
• Missed diagnoses of acute cardiac ischemia.
  The New England journal of medicine 2000 Kohn MA
• Optimal gestational age and birth-weight cutoffs to predict neonatal morbidity.
  Medical decision making : an international journal of the Society for Medical Decision Making 2000 Kohn MA, Vosti CL, Lezotte D, Jones RH
• The effects of clinical case management on hospital service use among ED frequent users.
  The American journal of emergency medicine 2000 Okin RL, Boccellari A, Azocar F, Shumway M, O'Brien K, Gelb A, Kohn M, Harding P, Wachsmuth C
• Epidemiologic analysis of an urban, public emergency department's frequent users.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2000 Mandelberg JH, Kuhn RE, Kohn MA
• Diagnostic accuracy of ultrasound above and below the beta-hCG discriminatory zone.
  Obstetrics and gynecology 2000 Kohn MA
• Therapy of brown spider envenomation: a controlled trial of hyperbaric oxygen, dapsone, and cyproheptadine.
  Annals of emergency medicine 1995 Phillips S, Kohn M, Baker D, Vander Leest R, Gomez H, McKinney P, McGoldrick J, Brent J