16 February 2020

Yasuyuki Okumura— p. 1

CURRICULUM VITAE
Yasuyuki Okumura
Tokyo Metropolitan Institute of Medical Science, Tokyo
yokumura@blue.zero.jp

PERSONAL STATEMENT
An epidemiologist with over 10 years of experience in governmental research organizations. Extensively
published in social medical journals. One of the most famous instructors on the use of the nationwide
claims database in Japan.

EDUCATION
2009

Ph.D. (Psychology)

Nihon University, Tokyo, Japan2006

M.A. (Psychology)

Nihon University, Tokyo, Japan

2003

B.A. (Psychology)

Waseda University, Tokyo, JapanRESEARCH EXPERIENCE⊳ Conduct clinical epidemiological studies using large scale databases including claims database,discharge abstracts, and registries.
⊳ Manage and support randomized controlled clinical trials with clinicians.
⊳ Instruct young scientists/clinicians.
2018–present

Senior Researcher

Tokyo Metropolitan Institute of Medical Science, Tokyo

2013–2018

Senior Researcher

Institute for Health Economics and Policy, Tokyo

2008–2013

Researcher

National Center of Neurology and Psychiatry, Tokyo

2006–2007

Research Fellow

Nippon Medical School, Tokyo

2005–2007

Research Fellow

National Institute of Public Health, Saitama, Japan

REFEREED PUBLICATIONS AS FIRST/CORRESPONDING AUTHOR1)

Okumura Y, Yamasaki S, Ando S, Usami M, Endo K, Hasegawa-Hiraiwa M, Kasai K, Nishida A:
Psychosocial burden of undiagnosed persistent ADHD symptoms in 12-year-old children: apopulation-based birth cohort study. Journal of Attention Disorders. in press.

16 February 2020

Yasuyuki Okumura— p. 22)

Okumura Y, Usami M, Okada T, Saito T, Negoro H, Tsujii N, Fujita J, Iida J: Prevalence,incidence, and persistence of ADHD drug use in Japan. Epidemiology and Psychiatric Sciences. inpress.

3)

Hattori S, Yoshida T, Okumura Y, Kondo K: Effects of reablement on the independence ofcommunity-dwelling older adults with mild disability: a randomized controlled trial. International
Journal of Environmental Research and Public Health 16(20): 3954, 2019.

4)

Okumura Y, Sugiyama N, Noda T, Tachimori H: Psychiatric admissions and length of stay during
fiscal years 2014 and 2015 in Japan: a retrospective cohort study using a nationwide claims
database. Journal of Epidemiology 29(8): 288-294, 2019.

5)

Okumura Y, Sakata N, Tachimori H, Takeshima T: Geographical variation in psychiatricadmissions among recipients of public assistance. Journal of Epidemiology 29(7): 264-271, 2019.

6)

Okumura Y, Usami M, Okada T, Saito T, Negoro H, Tsujii N, Fujita J, Iida J: Glucose andprolactin monitoring in children and adolescents initiating antipsychotic therapy. Journal of Childand Adolescent Psychopharmacology 28(7): 454-462, 2018.

7)

Okumura Y, Sugiyama N, Noda T, Sakata N: Association of high psychiatrist staffing withprolonged hospitalization, follow-up visits, and readmission in acute psychiatric units: aretrospective cohort study using a nationwide claims database. Neuropsychiatric Disease andTreatment 14: 893-902, 2018.

8)

Okumura Y, Sugiyama N, Noda T: Timely follow-up visits after psychiatric hospitalization andreadmission in schizophrenia and bipolar disorder in Japan. Psychiatry Research 270: 490-495,
2018.

9)

Okumura Y, Sakata N: Antidementia drug use in Japan: bridging the research-to-practice gap.
International Journal of Geriatric Psychiatry 33(9): 1286-1287, 2018.

10) Sakata N, Okumura Y: Thyroid function tests before prescribing anti-dementia drugs: A
retrospective observational study. Clinical Interventions in Aging 13: 1219-1223, 2018.
11) Sakata N, Okumura Y, Fushimi K, Nakanishi M, Ogawa A: Dementia and risk of 30-day
readmission in older adults after discharge from acute care hospitals. Journal of the American
Geriatrics Society 66(5): 871-878, 2018.
12) Okumura Y, Nishi D: Risk of recurrent overdose associated with prescribing patterns of
psychotropic medications after nonfatal overdose. Neuropsychiatric Disease and Treatment 13:653-665, 2017.
13) Sakata N, Okumura Y: Job loss after diagnosis of early-onset dementia: a matched cohort study.
Journal of Alzheimer's Disease 60(4): 1231-1235, 2017.
14) Ishii M, Okumura Y, Sugiyama N, Hasegawa H, Noda T, Hirayasu Y, Ito H: Feasibility andefficacy of shared decision making for first-admission schizophrenia: a randomized clinical tria.
BMC Psychiatry 17(1): 52, 2017.
15) Okumura Y, Sakata N, Takahashi K, Nishi D, Tachimori H: Epidemiology of overdose episodes
from the period prior to hospitalization for drug poisoning until discharge in Japan: an exploratory
descriptive study using a nationwide claims database. Journal of Epidemiology 27 (8): 373-380,
2017.

16 February 2020

Yasuyuki Okumura— p. 316) Okumura Y, Hatta K, Wada K, Takeuchi T, Kishi Y, DELIRIA-J Group: Expert opinions on thefirst-line pharmacological treatment for delirium in Japan: A conjoint analysis. International
Psychogeriatrics 28 (6): 1041-1050, 2016.
17) Okumura Y, Shimizu S, Matsumoto T: Prevalence, prescribed quantities, and trajectory of multiple
prescriber episodes for benzodiazepines: A 2-year cohort study. Drug and Alcohol Dependence
158: 118-125, 2016.
18) Ichikura K, Okumura Y, Takeuchi T: Associations of adverse clinical course and ingested
substances among patients with deliberate drug-poisoning: a cohort study from an intensive careunit in Japan. PLOS ONE 11(8): e0161996, 2016.
19) Okumura Y, Tachimori H, Matsumoto T, Nishi D: Exposure to psychotropic medications prior tooverdose: A case-control study. Psychopharmacology 232 (16): 3101-3109, 2015.
20) Okumura Y, Togo T, Fujita J: Trends in use of psychotropic medications among patients treatedwith cholinesterase inhibitors in Japan from 2002 to 2010. International Psychogeriatrics 27 (3):407-415, 2015.
21) Okumura Y, Ichikura K: Efficacy and acceptability of group cognitive behavioral therapy for
depression: a systematic review and meta-analysis. Journal of Affective Disorders 164: 155-164,
2014.
22) Okumura Y, Ito H: Out-of-pocket expenditure burdens in patients with cardiovascular conditions
and psychological distress: a nationwide cross-sectional study. General Hospital Psychiatry 35(3):233-8, 2013.
23) Okumura Y, Shimizu S, Ishikawa KB, Matsuda S, Fushimi K, Ito H: Comparison of emergency
hospital admissions for drug poisoning and major diseases: a retrospective observational study
using a nationwide administrative discharge database. BMJ Open 2(6): e001857, 2012.
24) Okumura Y, Shimizu S, Ishikawa KB, Matsuda S, Fushimi K, Ito H: Characteristics, proceduraldifferences, and costs of inpatients with drug poisoning in acute care hospitals in Japan. General
Hospital Psychiatry 34 (6): 681-685, 2012.
25) Okumura Y, Sakamoto S: Depression treatment preferences among Japanese undergraduates: using
conjoint analysis. International Journal of Social Psychiatry 58 (2): 195-203, 2012.
26) Okumura Y, Sakamoto S: Statistical power and effect sizes of depression research in Japan.
Psychiatry and Clinical Neurosciences 65 (4): 356-364, 2011.
27) Okumura Y, Higuchi T: Cost of depression among adults in Japan. The Primary Care Companion
for CNS Disorders 13 (3): e1-e9, 2011.
28) Okumura Y, Ito H, Kobayashi M, Mayahara K, Matsumoto Y, Hirakawa J: Prevalence of diabetesand antipsychotic prescription patterns in patients with Schizophrenia: a nationwide retrospective
cohort study. Schizophrenia Research 119 (1-3): 145-152, 2010.
29) Okumura Y, Sakamoto S, Ono Y: Latent structure of depression in a Japanese population sample:
taxometric procedures. Australian and New Zealand Journal of Psychiatry 43 (7): 666-673, 2009.
30) Okumura Y, Sakamoto S, Tomoda A, Kijima N: Latent structure of self-reported depression inundergraduates: Using taxometric procedures and information-theoretic latent variable modeling.
Personality and Individual Differences 46 (2): 166-171, 2009.

16 February 2020Yasuyuki Okumura— p. 4

PROGRAM1)

Okumura Y: rpsychi: Statistics for psychiatric research. 2010. http://cran.rproject.org/web/packages/rpsychi/

AWARDS
2018

Encouragement award in the Japan Epidemiological Association

2016

Award in psychiatric health and statistics (Fujita’s award)

2016

Best performance award in the Japanese Journal of Clinical Psychopharmacology

2014

Outstanding performance award in the Japanese Journal of ClinicalPsychopharmacology