Ka-Yuet Liu


Associate Professor


Contact Information

Email    ka@soc.ucla.edu
Office  272 Haines Hall
Phone  310-267-4967

My research applies data science methods to epidemiological questions. My test cases include suicide contagion, the autism epidemic, vaccine refusals, premature deaths among undocumented immigrants, and elective birth deliveries.  My research has been supported by grants from the National Institute of Health and appeared in the American Journal of Sociology, Demography, Social Forces, International Journal of Epidemiology, American Journal of Public Health, and other journals.  

Degrees

D.Phil., University of Oxford

M.Phil., University of Oxford

B.Soc. Sci., University of Hong Kong

Awards

Eliot Freidson Outstanding Publication Award, American Sociological Association, Medical Sociology Section, 2011

JK Swire Memorial Scholarship, full D.Phil. Scholarship, 2004-2006

Swire & Cathay Scholarship, full M.Phil. Scholarship, 2000-2002

Grants

NIHCD-R01. "Obstetrics Interventions, Neonatal Health, and Child Development". Role: Co-Investigator. Principal Investigators: Julien Teitler (Columbia) and Nancy Reichman (Rutgers). 9/11/2017-5/31/2021. UCLA direct and indirect costs: USD$438,388; total direct and indirect costs: USD$1,345,228.

California Center for Population Research Seed grant (US$16,167).“Estimating the Mortality Rates of Unauthorized Mexican Immigrants in California” role: Principle Investigator. 5/1/2015- 4/30/2016


UCLA Hellman Fellows award (US$24,253). “Diffusion of Non-Medical Exemptions to School Vaccine Requirements in California, 1992-2011” Principle Investigator.7/1/2014-8/30/2016


NIMH-R21 (MH100514-01A1. UCLA direct cost: $113,436; total direct cost US$275,000). “The Spread of Autism Diagnosis through Spatially Embedded Social Networks” Principle Investigator (with Peter Bearman). 1/1/2014-12/31/2016

Selected Publications

Gromis, A. & Liu Ka Y. (2020). The emergence of spatial clustering in medical vaccine exemptions following California Senate Bill 277, 2015-2018. American Journal of Public Health, 110, 1084-1091 [link]

Gromis, A. & Liu Ka Y. (2018). The Roles of Autism Prevalence and Neighborhood Composition on Vaccination Exemption Pockets: A Population-wide Study. Vaccine 36(46): 7064-7071 [link]

Liu, Ka Y, Bearman, PS (2015). Focal points, endogenous processes and exogenous shocks in the autism epidemic. Sociological Methods and Research, 44(2) 272-305 [link]

Liu Ka Y, King M, Bearman P (2010). Social influence and the autism epidemic. American Journal of Sociology 115(5):1389-434 [link] 

Liu Ka Y, Zerubavel N, Bearman P (2010). Social demographic change and autism. Demography 47(2):327-343 [link]

Hedström, P, Liu, Ka Y, Nordvik, M.(2008) Interaction domains and suicides: A population-based panel study of suicides in Stockholm, 1991-1999. Social Forces 87(2):713-740 [link]

Liu Ka Y, Beautrais A, Caine E, et al. (2007). Charcoal burning suicides in Hong Kong and urban Taiwan – An illustration of the impact of a novel method of suicide on overall regional rates.Journal of Epidemiology and Community Health 61:248-53 [link]

Liu Ka Y, Chen E, Chan C et al. (2006). Socio-economic and psychological correlates of suicidality among Hong Kong working-age adults: results from a population-based survey. Psychological Medicine 36: 1759-68. [link]

Previous Courses by Term

2019 Winter Quarter

Theory and Research in Sociology

Intermediate Statistical Methods II

2018 Fall Quarter

Theory and Research in Sociology

2018 Winter Quarter

Intermediate Statistical Methods II

2017 Spring Quarter

Social Network Methods

2017 Winter Quarter

Intermediate Statistical Methods II

2016 Fall Quarter

Quantitative Data Analysis

2016 Spring Quarter

Social Network Methods

2016 Winter Quarter

Social Networks

Intermediate Statistical Methods II

2015 Spring Quarter

Social Networks

Advanced Honors Seminars

2015 Winter Quarter

Variable Topics Research Seminars: Sociology

Intermediate Statistical Methods II

2014 Winter Quarter

Variable Topics Research Seminars: Sociology

Intermediate Statistical Methods II

2013 Fall Quarter

Social Networks

2013 Spring Quarter

Variable Topics Research Seminars: Sociology

2013 Winter Quarter

Social Networks

Intermediate Statistical Methods II

Previous Courses by Course

SOCIOL 210B
Intermediate Statistical Methods II

2019 Winter Quarter

2018 Winter Quarter

2017 Winter Quarter

2016 Winter Quarter

2015 Winter Quarter

2014 Winter Quarter

2013 Winter Quarter

SOCIOL 202B
Theory and Research in Sociology

2019 Winter Quarter

SOCIOL 202A
Theory and Research in Sociology

2018 Fall Quarter

SOCIOL 208B
Social Network Methods

2017 Spring Quarter

2016 Spring Quarter

SOCIOL 212A
Quantitative Data Analysis

2016 Fall Quarter

SOCIOL 111
Social Networks

2016 Winter Quarter

2015 Spring Quarter

2013 Fall Quarter

2013 Winter Quarter

SOCIOL 189
Advanced Honors Seminars

2015 Spring Quarter

SOCIOL 191V
Variable Topics Research Seminars: Sociology

2015 Winter Quarter

2014 Winter Quarter

2013 Spring Quarter