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Alex J. Bates

Alex J. Bates, PhD, MD, MPH (he/him), is the senior data analyst for the California Health Interview Survey (CHIS). His responsibilities include directing statistical analyses, interpreting findings, and developing publications that translate data into evidence-based insights and policy recommendations.

Dr. Bates previously worked as a research assistant at the University of Minnesota on multiple NIH-funded studies. In these roles he examined the health and wellbeing of gay and bisexual prostate cancer survivors and investigated the role of state-level policies on experiences of discrimination among transgender and nonbinary populations. His dissertation research focused on understanding heterogeneity within LGBTQIA+ populations and the role of multilevel stressors and resilience factors in shaping their health and wellbeing.

Dr. Bates earned his MD from the Royal College of Surgeons in Ireland and an MPH in Epidemiology from the University of Minnesota, Twin Cities, where he also completed a PhD in Epidemiology.

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Fact Sheet

Fact Sheet

Substance Use Among American Indian and Alaska Native Adults in California

This fact sheet uses 2021–2024 California Health Interview Survey (CHIS) data to examine binge drinking, cigarette use, e-cigarette use, marijuana use, and prescription painkiller misuse among AIAN adults in California.

Findings:

  • Approximately 1 in 5 AIAN adults had an episode of binge drinking (21%) or used marijuana (19%) in the past month.
  • Among those who used prescription painkillers in the past year, nearly 1 in 8 reported misusing these painkillers (12%).
  • Approximately 1 in 8 AIAN adults reported smoking either cigarettes and/or e-cigarettes in the past month (13%).
Fact Sheet

Fact Sheet

Hypertension, Heart Disease, and Diabetes Among American Indian and Alaska Native Adults in California

American Indian and Alaska Native (AIAN) populations face disproportionately high rates of cardiovascular disease nationally, and among California tribal communities, diabetes, high blood pressure, and heart disease have been identified as major health priorities.

This fact sheet uses combined 2020–2024 California Health Interview Survey (CHIS) data to examine hypertension, heart disease, diabetes, diabetes medication use, hypertension medication use, and uncontrolled hypertension among American Indian and Alaska Native (AIAN) adults in California.

Findings: 

  • 1 in 4 AIAN adults reported living with hypertension (25%), and an additional 9% reported having borderline or pre-hypertension. This amounts to more than 1 in 3 living with elevated blood pressure (34%).
  • Approximately 6% of AIAN adults reported living with heart disease (e.g., coronary artery disease).
  • About 1 in 9 AIAN adults reported living with diabetes (12%).
  • Overall, nearly 1 in 3 AIAN adults reported living with heart disease, hypertension, and/or diabetes (32%), and approximately 10% of AIAN adults reported living with at least two of these conditions. 
Policy Brief

Policy Brief

Differences in Chronic Conditions and Substance Use Among American Indian and Alaska Native Adults in California

American Indian and Alaska Native (AIAN) populations face significant chronic disease and substance use burdens compared to other populations. However, the differences that exist within this broader population remain understudied in California. Using combined 2020–2024 California Health Interview Survey (CHIS) data for AIAN adults, this policy brief highlights variations in chronic conditions and substance use across AIAN subpopulation groups.

Selected Findings

  • American Indian and Alaska Native (AIAN) adults in California experience substantial burdens of chronic conditions, including diabetes, heart disease, hypertension, and uncontrolled blood pressure, and of substance use including smoking, marijuana use, and binge drinking.
  •  These burdens are not shared equally across AIAN subpopulations, those with lower incomes or lower educational attainment reported higher rates of living with diabetes and uncontrolled blood pressure. 
  • Among AIAN adults living with hypertension, those identifying as lesbian, gay, bisexual, pansexual, or another nonheterosexual identity (LGBP+) were more than twice as likely as heterosexual adults to have uncontrolled blood pressure. 
  • Substance use also differed by income, with smoking more common among lower-incomes AIAN adults and binge drinking more common among higher-income adults.
  •  Marijuana use was markedly higher among LGBP+ and transgender and gender-expansive AIAN adults than their heterosexual and cisgender peers. 
Policy Brief

Policy Brief

Housing Discrimination in California: Findings from the 2023 and 2024 California Health Interview Survey

Housing discrimination is widely recognized as a significant public health issue, yet its prevalence and distribution across populations remain understudied in California. Using pooled 2023–2024 California Health Interview Survey (CHIS) data for adults 18 and older, this policy brief highlights the prevalence of housing discrimination, groups that are discriminated against, and variations across populations and regions.

Key findings:

  • Approximately 1 in 25 (4%) adult Californians (18 and older) said they experienced harassment or discrimination related to housing in the past two years. 
  • Nearly a quarter of Californians with unstable housing (24%), 10% of Black or African American Californians, 9% of those living with a disability, and 8% of transgender and gender-expansive Californians said they had experienced housing discrimination in the past two years. 
  • Californians who had used or received a Housing Choice Section 8 Voucher (14%), those with household incomes below 200% of the federal poverty level (FPL)(8%), and those who rent (8%) had also experienced higher rates of housing discrimination than the state average (4%). 
  • Among the entire adult population in California, approximately 1 in every 50 adult Californians (roughly 586,000 people) experienced housing discrimination due to race or skin color in the past two years. 
     
Fact Sheet

Fact Sheet

Substance Use Among American Indian and Alaska Native Adults in California

This fact sheet uses 2021–2024 California Health Interview Survey (CHIS) data to examine binge drinking, cigarette use, e-cigarette use, marijuana use, and prescription painkiller misuse among AIAN adults in California.

Findings:

  • Approximately 1 in 5 AIAN adults had an episode of binge drinking (21%) or used marijuana (19%) in the past month.
  • Among those who used prescription painkillers in the past year, nearly 1 in 8 reported misusing these painkillers (12%).
  • Approximately 1 in 8 AIAN adults reported smoking either cigarettes and/or e-cigarettes in the past month (13%).

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Policy Brief

Policy Brief

Differences in Chronic Conditions and Substance Use Among American Indian and Alaska Native Adults in California

American Indian and Alaska Native (AIAN) populations face significant chronic disease and substance use burdens compared to other populations. However, the differences that exist within this broader population remain understudied in California. Using combined 2020–2024 California Health Interview Survey (CHIS) data for AIAN adults, this policy brief highlights variations in chronic conditions and substance use across AIAN subpopulation groups.

Selected Findings

  • American Indian and Alaska Native (AIAN) adults in California experience substantial burdens of chronic conditions, including diabetes, heart disease, hypertension, and uncontrolled blood pressure, and of substance use including smoking, marijuana use, and binge drinking.
  •  These burdens are not shared equally across AIAN subpopulations, those with lower incomes or lower educational attainment reported higher rates of living with diabetes and uncontrolled blood pressure. 
  • Among AIAN adults living with hypertension, those identifying as lesbian, gay, bisexual, pansexual, or another nonheterosexual identity (LGBP+) were more than twice as likely as heterosexual adults to have uncontrolled blood pressure. 
  • Substance use also differed by income, with smoking more common among lower-incomes AIAN adults and binge drinking more common among higher-income adults.
  •  Marijuana use was markedly higher among LGBP+ and transgender and gender-expansive AIAN adults than their heterosexual and cisgender peers. 
Fact Sheet

Fact Sheet

Hypertension, Heart Disease, and Diabetes Among American Indian and Alaska Native Adults in California

American Indian and Alaska Native (AIAN) populations face disproportionately high rates of cardiovascular disease nationally, and among California tribal communities, diabetes, high blood pressure, and heart disease have been identified as major health priorities.

This fact sheet uses combined 2020–2024 California Health Interview Survey (CHIS) data to examine hypertension, heart disease, diabetes, diabetes medication use, hypertension medication use, and uncontrolled hypertension among American Indian and Alaska Native (AIAN) adults in California.

Findings: 

  • 1 in 4 AIAN adults reported living with hypertension (25%), and an additional 9% reported having borderline or pre-hypertension. This amounts to more than 1 in 3 living with elevated blood pressure (34%).
  • Approximately 6% of AIAN adults reported living with heart disease (e.g., coronary artery disease).
  • About 1 in 9 AIAN adults reported living with diabetes (12%).
  • Overall, nearly 1 in 3 AIAN adults reported living with heart disease, hypertension, and/or diabetes (32%), and approximately 10% of AIAN adults reported living with at least two of these conditions. 

Center in the News

Equality California confronts persistent hate, expands its outreach as need for support grows in state

This story cites 2024 data from the California Health Interview Survey showing that 3.1 million Californians ages 12 and over experienced hate acts in the previous year, with 31% reporting unmet support needs. News https://sdvoice.info/equality-california-confronts-persistent-hate-expands-its-outreach-as-need-for-support-grows-in-state/

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Center in the News

With California anti-hate program set to end, report warns Black Californians remain most targeted group

This story cites California Health Interview Survey data that showed nearly 3.1 million Californians experienced a hate act in the year prior to being surveyed. News https://www.theobserver.media/california/with-california-anti-hate-program-set-to-end-report-warns-black-californians-remain-most-targeted-group-a38b7cc0

Center in the News

Millions of Californians witness or experience hate crimes, report finds

This story features data from the California Health Interview Survey (CHIS) on the prevalence of hate acts in the state. According to the report, an estimated 8 percent of Californians over the age of 12 — roughly 2.6 million people — experienced at least one act of hate within a one-year period between 2022 and 2023. News https://davisvanguard.org/2026/03/california-hate-crimes-report/

Online

Disparities in Chronic Health Conditions and Substance Use among American Indian and Alaska Native Adults in California

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Online

When Hate Hits Home: Understanding Californians’ Experiences with Acts of Hate

Online

California Health Interview Survey (CHIS) Annual Data Release