Patricia O'Campo

Adjunct Scientist (Full Status) ICES Central Populations & Public Health Research Program

Biography

Patricia O'Campo is a professor at the Dalla Lana School of Public Health at the University of Toronto.

As a social epidemiologist, Dr. O'Campo has conducted policy-relevant intervention research on the social determinants of health and well-being among women and children for more than 25 years. She has focused on methods development as part of her research, including the application of concept mapping to increase understanding of how residential neighborhoods influence well-being and the development of monitoring methods for rare health events in small geographic areas.

Dr. O'Campo has served on several local, national and international committees and boards, including Toronto's United Way, the Canadian Perinatal Surveillance System, US Federal Advisory Committee for the National Children's Study, and more recently, the Canadian Academy of Health Sciences.

PhD, Epidemiology, Johns Hopkins School of Public Health
BSc (Hons), Conservation and Research Studies, University of California, Berkeley

Social determinants of health
Equity in healthcare
Women’s health

Chair, Inter-sectoral Solutions to Urban Health Problems, St. Michael’s Hospital, Toronto
Scientist, Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael’s Hospital
Professor, Dalla Lana School of Public Health, University of Toronto
Adjunct Professor, Johns Hopkins Bloomberg School of Hygiene and Public Health

ICES Grants

Grant

2019 - 2021

Suicide-related behaviours of lesbians-gay-and bisexual individuals in Ontario: investigating the socio-environmental determinants of risk and care using linked longitudinal population-based data

Granting Agency: Canadian Institutes of Health Research
Principal Investigators: Chum A
Co-Investigators: Barker LC, Kennedy SH, O'Campo PJ, Vigod SN
Grant Type: Project grant
Grant Amount: $156,825

Grant

2013 - 2018

A randomized controlled trial of housing first for homeless people with mental illness: long-term outcomes

Granting Agency: Canadian Institutes of Health Research
Principal Investigators: Hwang S, Ocampo P, Stergiopoulos V
Co-Investigators: Bayoumi A, Goering P, Nisenbaum R, Tsemberis S
Grant Type: Operating Grant
Grant Amount: $1,984,383

Grant

2013 - 2017

Our health counts Toronto: developing a population based urban aboriginal cohort to assess and enhance individual, family, and community health and well-being

Granting Agency: Canadian Institutes of Health Research
Principal Investigators: Smylie J
Co-Investigators: Booth S, Bourgeois C, Wolfe S, Allan B, Firestone M, Fleiszer P, Gesink D, Glazier R, Howard H, Hwang S, Nisenbaum R, O'Campo P, Snyder M
Grant Type: Operating Grant
Grant Amount: $992,183

Grant

2013 - 2016

Gender disparities in perinatal and child health and maternal well-being associated with maternal country of birth

Granting Agency: Canadian Institutes of Health Research
Principal Investigators: Urquia M
Co-Investigators: Glazier R, Henry D, Jha P, McKenzie K, Moineddin R, O'Campo P, Ray J
Grant Type: Operating Grant
Grant Amount: $250,809

Grant

2013 - 2014

Gender disparities in perinatal and child health and maternal well-being associated with maternal country of birth

Granting Agency: Canadian Institutes of Health Research
Principal Investigators: Urquia M
Co-Investigators: Glazier R, Henry D, Jha P, McKenzie K, Moineddin R, O'Campo P, Ray J
Grant Type: Operating Start-Up Grant
Grant Amount: $100,000

Grant

2012 - 2014

Severe maternal and neonatal morbidity associated with maternal country of birth

Granting Agency: Canadian Institutes of Health Research
Principal Investigators: Urquia M
Co-Investigators: Glazier R, Kim J, Liston R, O'Campo P, Ray J, Sgro M
Grant Type: Operating Grant
Grant Amount: $61,395

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Journal Articles

Journal Article

12/06/2025

Overall and substance use-specific healthcare utilization among individuals with and without criminal justice involvement in Ontario, Canada

Russell C, Yakubovich A, O’Campo P, Qu K, Plumptre L, Kouyoumdjian F, Matheson FI. Int J Prison Health. 2025; Jun 13 [Epub ahead of print].

Journal Article

23/05/2023

Neighborhood income mobility and risk of neonatal and maternal morbidity

Jairam JA, Vigod SN, Siddiqi A, Guan J, Boblitz A, Wang X, O’Campo P, Ray JG. JAMA Netw Open. 2023; 6(5):e2315301. Epub 2023 May 23.

Journal Article

17/04/2023

Morbidity and mortality of newborns born to immigrant and nonimmigrant females residing in low-income neighbourhoods

Jairam JA, Vigod SN, Siddiqi A, Guan J, Boblitz A, Wang X, O’Campo P, Ray JG. CMAJ. 2023; 195:E537-47. Epub 2023 Apr 17.

Journal Article

16/02/2023

Severe maternal morbidity and mortality among immigrant and Canadian-born women residing within low-income neighborhoods in Ontario, Canada

Jairam JA, Vigod SN, Siddiqi A, Guan J, Boblitz A, Wang X, O’Campo P, Ray JG. JAMA Netw Open. 2023; 6(2):e2256203. Epub 2023 Feb 16.

Journal Article

13/06/2022

Effect of a housing intervention on major cardiovascular events among homeless adults with mental illness

Liauw SSL, Mejia-Lancheros C, Lachaud J, O’Campo P, Stergiopoulos V, Hwang SW. J Soc Distress Homeless. 2022; Jun 13 [Epub ahead of print].

Journal Article

08/07/2021

The long-term effects of a Housing First intervention on primary care and non-primary care physician visits among homeless adults with mental illness: a 7-year RCT follow-up

Mejia-Lancheros C, Lachaud J, To MJ, Lee P, Nisenbaum R, O'Campo P, Stergiopoulos V, Hwang SW. J Prim Care Community Health. 2021; 12:21501327211027102. Epub 2021 Jul 8.

Journal Article

28/06/2021

The effect of a Housing First intervention on acute healthcare utilization among homeless adults with mental illness: long-term outcomes of the At Home/Chez-Soi randomized pragmatic trial

Lachaud J, Mejia-Lancheros C, Durbin A, Nisenbaum R, Wang R, O'Campo P, Stergiopoulos V, Hwang SW. J Urban Health. 2021; 98(4):505-15. Epub 2021 Jun 28.

Journal Article

16/09/2020

Do socioeconomic and birth order gradients in child maltreatment differ by immigrant status?

Kenny KS, Pulver A, O'Campo P, Guttmann A, Urquia ML. J Epidemiol Community Health. 2021; 75(1):22-8. Epub 2020 Sep 16.

Journal Article

31/07/2020

Receipt of routine preventive care among infant daughters and sons of immigrant mothers in Ontario, Canada: a retrospective cohort study

Pulver A, Guttmann A, Ray JG, O'Campo PJ, Urquia ML. BMJ Open. 2020; 10(7):e036127. Epub 2020 Jul 31.

Journal Article

16/01/2020

Differences in early childhood maltreatment by maternal birthplace and child gender

Pulver A, Guttmann A, Ray JG, O'Campo P, Urquia ML. J Pediatr. 2020; 218:184-91.e2. Epub 2020 Jan 16.

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News Coverage

News Release

12/06/2025

Correctional populations in Ontario have twenty times the rate of substance use-related healthcare visits, study finds

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Contact Details

Get in touch with
Patricia O'Campo

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Patricia O'Campo

Biography

Education

Research Focus

Other Affiliations

ICES Grants

Suicide-related behaviours of lesbians-gay-and bisexual individuals in Ontario: investigating the socio-environmental determinants of risk and care using linked longitudinal population-based data

A randomized controlled trial of housing first for homeless people with mental illness: long-term outcomes

Our health counts Toronto: developing a population based urban aboriginal cohort to assess and enhance individual, family, and community health and well-being

Gender disparities in perinatal and child health and maternal well-being associated with maternal country of birth

Gender disparities in perinatal and child health and maternal well-being associated with maternal country of birth

Severe maternal and neonatal morbidity associated with maternal country of birth

Journal Articles

Overall and substance use-specific healthcare utilization among individuals with and without criminal justice involvement in Ontario, Canada

Neighborhood income mobility and risk of neonatal and maternal morbidity

Morbidity and mortality of newborns born to immigrant and nonimmigrant females residing in low-income neighbourhoods

Severe maternal morbidity and mortality among immigrant and Canadian-born women residing within low-income neighborhoods in Ontario, Canada

Effect of a housing intervention on major cardiovascular events among homeless adults with mental illness

The long-term effects of a Housing First intervention on primary care and non-primary care physician visits among homeless adults with mental illness: a 7-year RCT follow-up

The effect of a Housing First intervention on acute healthcare utilization among homeless adults with mental illness: long-term outcomes of the At Home/Chez-Soi randomized pragmatic trial

Do socioeconomic and birth order gradients in child maltreatment differ by immigrant status?

Receipt of routine preventive care among infant daughters and sons of immigrant mothers in Ontario, Canada: a retrospective cohort study

Differences in early childhood maltreatment by maternal birthplace and child gender

News Coverage

Correctional populations in Ontario have twenty times the rate of substance use-related healthcare visits, study finds

Get in touch with
Patricia O'Campo

Patricia O'Campo

Biography

Education

Research Focus

Other Affiliations

ICES Grants

Suicide-related behaviours of lesbians-gay-and bisexual individuals in Ontario: investigating the socio-environmental determinants of risk and care using linked longitudinal population-based data

A randomized controlled trial of housing first for homeless people with mental illness: long-term outcomes

Our health counts Toronto: developing a population based urban aboriginal cohort to assess and enhance individual, family, and community health and well-being

Gender disparities in perinatal and child health and maternal well-being associated with maternal country of birth

Gender disparities in perinatal and child health and maternal well-being associated with maternal country of birth

Severe maternal and neonatal morbidity associated with maternal country of birth

Journal Articles

Overall and substance use-specific healthcare utilization among individuals with and without criminal justice involvement in Ontario, Canada

Neighborhood income mobility and risk of neonatal and maternal morbidity

Morbidity and mortality of newborns born to immigrant and nonimmigrant females residing in low-income neighbourhoods

Severe maternal morbidity and mortality among immigrant and Canadian-born women residing within low-income neighborhoods in Ontario, Canada

Effect of a housing intervention on major cardiovascular events among homeless adults with mental illness

The long-term effects of a Housing First intervention on primary care and non-primary care physician visits among homeless adults with mental illness: a 7-year RCT follow-up

The effect of a Housing First intervention on acute healthcare utilization among homeless adults with mental illness: long-term outcomes of the At Home/Chez-Soi randomized pragmatic trial

Do socioeconomic and birth order gradients in child maltreatment differ by immigrant status?

Receipt of routine preventive care among infant daughters and sons of immigrant mothers in Ontario, Canada: a retrospective cohort study

Differences in early childhood maltreatment by maternal birthplace and child gender

News Coverage

Correctional populations in Ontario have twenty times the rate of substance use-related healthcare visits, study finds

Get in touch with Patricia O'Campo

Get in touch with
Patricia O'Campo