Research Profile

Sean Millar

Biography

Dr Seán Millar is a research support officer and postdoctoral researcher in the School of Public Health. After completing a Master's degree in Public Health, Seán undertook a PhD (Epidemiology and Biostatistics) at UCC where his research examined anthropometric measures and blood biomarkers regarding their utility for assessing cardiometabolic risk in clinical practice. During this time, Seán also represented the Irish Health Research Board (HRB) Centre for Health and Diet Research in its collaboration with the European BioSHaRE data sharing and harmonisation consortium.  

Since completing his PhD, Dr Millar has taken up a position in the School of Public Health as a research support officer for the Irish Focal Point of the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) at the HRB. In this role, he is responsible for the preparation of annual reports detailing the prevalence of illicit substance use in Ireland, harms and harm reduction practices related to drug use and substance abuse in Irish prisons. He is also a regular contributor to Drugnet Ireland, the quarterly newsletter of the Alcohol and Drug Research Unit of the HRB. As part of his work with the EMCDDA Irish Focal Point, Dr Millar is a member of the Research Advisory Committee for the Irish National Drug and Alcohol Surveys and the National Drugs Strategy Research Sub-Committee. In addition, Seán is the lead PI for two capture-recapture studies which will estimate the prevalence of opioid use in the Republic of Ireland between the years 2015–2019 and 2020–2022.  

Dr Millar has been involved in a number of research projects. The safefood-funded Lifetime Costs of Childhood Overweight and Obesity project represented the Irish contribution to a larger pan-European Joint Action on Nutrition and Physical Activity (JANPA) project. The overall aim of JANPA was to contribute to halting the rise of overweight and obesity in children and adolescents. Findings from this research are currently being used to guide health policy in Ireland. Seán was also part of the 
Interdisciplinary Capacity Enhancement (ICE) Award – Lifestyle Transitions and Trajectories Through the Lifecourse: Enhancing Capacity in Irish Cohort and Cross-Sectional Studies project. From this, among Seán’s continued responsibilities in the School are data management of the Mitchelstown Cohort Study, an HRB-funded study of 2,047 middle- to older-aged men and women in Ireland.  

Other postdoctoral research (funded through Breakthrough Cancer Research) has investigated the contribution of diet, lifestyle behaviours and metabolic phenotype to cardiovascular disease and cancer risk. Dr Millar is also the principal lecturer and module co-ordinator for the second year BSc Public Health Research and third year BSc Data Management modules in the School of Public Health.

Research Grants

 ProjectFunding
Body
Start DateEnd DateAward
Research Service to Report Drug Prevalence, Health Correlates of Drug Use, Consequences of Drug Use and Prison Data to the EMCDDA (2021–2023) and an Updated Estimation of Problem Drug UseHealth Research Board01-JAN-2131-DEC-23€198,595.03
A Capture-Recapture Study to Estimate the Prevalence of Problem Opiate Use in Ireland, 2015–2019Health Research Board01-NOV-2031-OCT-21€47,815.00
Research Service to Report Drug Prevalence, Health Correlates of Drug Use, Consequences of Drug Use and Prison Data to the EMCDDA, 2018–2020Health Research Board01-JAN-1831-DEC-20€148,419.18

Contract Researchers

 Researcher NameProjectRoleFunding Body
Dr Michael HanrahanA Capture-Recapture Study to Estimate the Prevalence of Problem Opiate Use in Ireland, 2015–2019Research AssociateHealth Research Board

Publications

Peer Reviewed Journals

 YearPublication
(2022)'Associations between the Nutrient Profiling System Underlying the Nutri-Score Nutrition Label and Biomarkers of Chronic Low-Grade Inflammation: A Cross-Sectional Analysis of a Middle- to Older-Aged Population'
Millar SR; Navarro P; Harrington JM; Perry IJ; Phillips CM (2022) 'Associations between the Nutrient Profiling System Underlying the Nutri-Score Nutrition Label and Biomarkers of Chronic Low-Grade Inflammation: A Cross-Sectional Analysis of a Middle- to Older-Aged Population'. Nutrients, [DOI] [Details]
(2022)'Dietary score associations with markers of chronic low-grade inflammation: a cross-sectional comparative analysis of a middle- to older-aged population'
Millar SR; Navarro P; Harrington JM; Shivappa N; Hébert JR; Perry IJ; Phillips CM (2022) 'Dietary score associations with markers of chronic low-grade inflammation: a cross-sectional comparative analysis of a middle- to older-aged population'. European Journal of Nutrition, [DOI] [Details]
(2022)'Associations between a protective lifestyle behaviour score and biomarkers of chronic low-grade inflammation: A cross-sectional analysis in middle-to-older aged adults'
Millar SR; Harrington JM; Perry IJ; Phillips CM (2022) 'Associations between a protective lifestyle behaviour score and biomarkers of chronic low-grade inflammation: A cross-sectional analysis in middle-to-older aged adults'. International Journal of Obesity, [DOI] [Details]
(2021)'Comparing cannabis use disorder in the general population with cannabis treatment seekers using multi-source national datasets – Who receives treatment?'
Mongan D; Carew AM; O’Neill D; Millar SR; Lyons S; Galvin B; Smyth BP (2021) 'Comparing cannabis use disorder in the general population with cannabis treatment seekers using multi-source national datasets – Who receives treatment?'. European Addiction Research, [DOI] [Details]
(2021)'Relationships between patterns of cannabis use, abuse and dependence and recent stimulant use: Evidence from two national surveys in Ireland'
Millar SR; Mongan D; O'Dwyer C; Smyth BP; Perry IJ; Galvin B (2021) 'Relationships between patterns of cannabis use, abuse and dependence and recent stimulant use: Evidence from two national surveys in Ireland'. Plos One, [DOI] [Details]
(2021)'Comparing non-invasive diabetes risk scores for detecting patients in clinical practice: a cross-sectional validation study'
Flynn S; Millar SR; Buckley CM; Junker K; Phillips CM; Harrington JM (2021) 'Comparing non-invasive diabetes risk scores for detecting patients in clinical practice: a cross-sectional validation study'. Hrb Open Research, [DOI] [Details]
(2021)'The prevalence and correlates of pre-diabetes in middle- to older-aged Irish adults using three diagnostic methods'
Junker K; Buckley CM; Millar SR; Flynn S; Harrington JM; Kearney PM; Perry IJ (2021) 'The prevalence and correlates of pre-diabetes in middle- to older-aged Irish adults using three diagnostic methods'. Plos One, [DOI] [Details]
(2021)'Comparing Dietary Score Associations with Lipoprotein Particle Subclass Profiles: A Cross-Sectional Analysis of a Middle-to Older-Aged Population'
Millar SR; Navarro P; Harrington JM; Shivappa N; Hébert JR; Perry IJ; Phillips CM (2021) 'Comparing Dietary Score Associations with Lipoprotein Particle Subclass Profiles: A Cross-Sectional Analysis of a Middle-to Older-Aged Population'. Clinical Nutrition, [DOI] [Details]
(2021)'Relationships between age at first substance use and persistence of cannabis use and cannabis use disorder'
Millar SR; Mongan D; Smyth BP; Perry IJ; Galvin B (2021) 'Relationships between age at first substance use and persistence of cannabis use and cannabis use disorder'. BMC Public Health, [DOI] [Details]
(2021)'The association between BMI self-selection, self-reported BMI and objectively measured BMI'
Johnson E; Millar SR; Shiely F (2021) 'The association between BMI self-selection, self-reported BMI and objectively measured BMI'. Hrb Open Research, [DOI] [Details]
(2021)'BMI self-selection: Exploring alternatives to self-reported BMI'
Shiely F; Millar SR (2021) 'BMI self-selection: Exploring alternatives to self-reported BMI'. Behavioural Research Methods, [DOI] [Details]
(2021)'The influence of different physical activity behaviours on the gut microbiota of older Irish adults'
Zhong X; Powell C; Phillips CM; Millar SR; Carson BP; Dowd KP; Perry IJ; Kearney PM; Harrington JM; O'Toole PW; Donnelly AE (2021) 'The influence of different physical activity behaviours on the gut microbiota of older Irish adults'. Aging Health, [DOI] [Details]
(2021)'Correlates of patterns of cannabis use, abuse and dependence: evidence from two national surveys in Ireland'
Millar SR; Mongan D; O’Dwyer C; Long J; Smyth BP; Perry IJ; Galvin B (2021) 'Correlates of patterns of cannabis use, abuse and dependence: evidence from two national surveys in Ireland'. The European Journal of Public Health, [DOI] [Details]
(2021)'Exploring 12-year trends in childhood obesity prevalence for the Republic of Ireland – a national study using survey data from 2002 and 2014'
Millar SR; Harding M; McCarthy LE; Kelleher V; Harrington JM; James P; Whelton H; Perry IJ (2021) 'Exploring 12-year trends in childhood obesity prevalence for the Republic of Ireland – a national study using survey data from 2002 and 2014'. Hrb Open Research, [DOI] [Details]
(2021)'Dietary Quality Determined by the Healthy Eating Index-2015 and Biomarkers of Chronic Low-Grade Inflammation: A Cross-Sectional Analysis in Middle-to-Older Aged Adults'
Millar SR; Navarro P; Harrington JM; Perry IJ; Phillips CM (2021) 'Dietary Quality Determined by the Healthy Eating Index-2015 and Biomarkers of Chronic Low-Grade Inflammation: A Cross-Sectional Analysis in Middle-to-Older Aged Adults'. Nutrients, [DOI] [Details]
(2020)'Protective lifestyle behaviours and lipoprotein particle subclass profiles in a middle-to older-aged population'
Millar SR; Harrington JM; Perry IJ; Phillips CM (2020) 'Protective lifestyle behaviours and lipoprotein particle subclass profiles in a middle-to older-aged population'. Atherosclerosis, [DOI] [Details]
(2020)'Gut Microbiota Associations with Metabolic Health and Obesity Status in Older Adults'
Zhong X; Harrington JM; Millar SR; Perry IJ; O'Toole PW; Phillips CM (2020) 'Gut Microbiota Associations with Metabolic Health and Obesity Status in Older Adults'. Nutrients, [DOI] [Details]
(2020)'Drinking in denial: a cross-sectional analysis of national survey data in Ireland to measure drinkers' awareness of their alcohol use'
Mongan D; Millar SR; O'Dwyer C; Long J; Galvin B (2020) 'Drinking in denial: a cross-sectional analysis of national survey data in Ireland to measure drinkers' awareness of their alcohol use'. Bmj Open, [DOI] [Details]
(2020)'Improvements in Clinical Outcomes in Children with Cystic Fibrosis aged Six and 16 years'
Finn BP; Millar SR; Cronin K; Crowley J; Dunne S; Jennings R; Keating E; Murphy C; O'Donovan D; Shanahan P; Short C; Mullane D; Ni Chroinin M (2020) 'Improvements in Clinical Outcomes in Children with Cystic Fibrosis aged Six and 16 years'. Irish medical journal, [Details]
(2019)'Drinking patterns and the distribution of alcohol-related harms in Ireland: Evidence for the prevention paradox'
O'Dwyer C; Mongan D; Millar SR; Rackard M; Galvin B; Long J; Barry J (2019) 'Drinking patterns and the distribution of alcohol-related harms in Ireland: Evidence for the prevention paradox'. BMC Public Health, [DOI] [Details]
(2015)'Assessing cardiometabolic risk in middle-aged adults using body mass index and waist-height ratio: are two indices better than one? A cross-sectional study'
Millar SR; Perry IJ; Phillips CM (2015) 'Assessing cardiometabolic risk in middle-aged adults using body mass index and waist-height ratio: are two indices better than one? A cross-sectional study'. Diabetology & Metabolic Syndrome, [DOI] [Details]
(2015)'Smoking as an independent risk factor for macrocytosis in middle‐aged adults: A population‐based observational study'
O’Reilly MA; Millar SR; Buckley CM; Harrington JM; Perry IJ; Cahill MR (2015) 'Smoking as an independent risk factor for macrocytosis in middle‐aged adults: A population‐based observational study'. American journal of hematology, [DOI] [Details]
(2015)'HbA1c Alone Is a Poor Indicator of Cardiometabolic Risk in Middle-Aged Subjects with Pre-Diabetes but Is Suitable for Type 2 Diabetes Diagnosis: A Cross-Sectional Study'
Millar SR; Perry IJ; Phillips CM (2015) 'HbA1c Alone Is a Poor Indicator of Cardiometabolic Risk in Middle-Aged Subjects with Pre-Diabetes but Is Suitable for Type 2 Diabetes Diagnosis: A Cross-Sectional Study'. Plos One, [DOI] [Details]
(2015)'Optimal Central Obesity Measurement Site for Assessing Cardiometabolic and Type 2 Diabetes Risk in Middle-Aged Adults'
Millar SR; Perry IJ; Van den Broeck J; Phillips CM (2015) 'Optimal Central Obesity Measurement Site for Assessing Cardiometabolic and Type 2 Diabetes Risk in Middle-Aged Adults'. Plos One, [DOI] [Details]
(2014)'DataSHIELD: taking the analysis to the data, not the data to the analysis'
Gaye A; Marcon Y; Isaeva J; LaFlamme P; Turner A; Jones EM; Minion J; Boyd AW; Newby CJ; Nuotio ML; Wilson R; Butters O; Murtagh B; Demir I; Doiron D; Giepmans L; Wallace SE; Budin-Ljosne I; Schmidt CO; Boffetta P; Boniol M; Bota M; Carter KW; deKlerk N; Dibben C; Francis RW; Hiekkalinna T; Hveem K; Kvaloy K; Millar SR; et al. (2014) 'DataSHIELD: taking the analysis to the data, not the data to the analysis'. International Journal of Epidemiology, [DOI] [Details]
(2013)'The Prevalence and Determinants of Undiagnosed and Diagnosed Type 2 Diabetes in Middle-Aged Irish Adults'
O Connor JM; Millar SR; Buckley CM; Kearney PM; Perry IJ (2013) 'The Prevalence and Determinants of Undiagnosed and Diagnosed Type 2 Diabetes in Middle-Aged Irish Adults'. Plos One, [DOI] [Details]

Conference Publications

 YearPublication
(2021)Blood
Mohamed MB; Millar SR; et al. (2021) Examining the Usefulness of the Charlson Comorbidity Index to Predict Early Mortality in Patients with Acute Myeloid Leukaemia Blood [DOI] [Details]
(2020)Proceedings of the Nutrition Society
Gautam L; Millar SR; Perry IJ; Harrington JM (2020) Protective Lifestyle Factors and Cognitive Function in a Middle-to Older-Aged Population: A Cross-Sectional Analysis Proceedings of the Nutrition Society [DOI] [Details]
(2019)Journal of Epidemiology and Community Health
Millar SR; Phillips CM; Harrington JM; Perry IJ (2019) Predicting type 2 diabetes development among patients in general practice – a prospective analysis comparing metabolic syndrome definitions and components Journal of Epidemiology and Community Health [DOI] [Details]
(2019)Journal of Cystic Fibrosis
Finn B; Millar SR; Cronin K; Crowley J; Dunne S; Jennings R; Keating E; Murphy C; O'Donovan D; Shanahan P; Short C; Mullane D; Ni Chroinin M (2019) Improvements in outcomes in children with cystic fibrosis aged 16 years in Cork University Hospital from 2002 to 2018 Journal of Cystic Fibrosis [DOI] [Details]
(2018)Journal of Epidemiology and Community Health
Kelleher E; Millar SR; Shiely F; Perry IJ; Harrington JM (2018) Parent and child misperception of child weight status: a cross-sectional analysis of the Cork children’s lifestyle study (CCLaS) Journal of Epidemiology and Community Health [DOI] [Details]
(2015)International Journal of Epidemiology
Millar SR; Van den Broeck J; Perry IJ; Phillips CM (2015) Optimal Waist Circumference Measurement Site For Assessing Metabolic and Type 2 Diabetes Risk in Middle-Aged Adults International Journal of Epidemiology [DOI] [Details]
(2015)International Journal of Epidemiology
Millar SR; O Connor JM; Buckley CM; Kearney PM; Perry IJ (2015) The Prevalence and Determinants of Undiagnosed and Diagnosed Type 2 Diabetes in Middle-Aged Irish Adults International Journal of Epidemiology [DOI] [Details]
(2015)Journal of Epidemiology and Community Health
Millar SR; Perry IJ; Phillips CM (2015) General and central obesity measurement associations with markers of chronic low-grade inflammation and type 2 diabetes Journal of Epidemiology and Community Health [DOI] [Details]
(2015)Journal of Epidemiology and Community Health
Millar SR; Perry IJ; Phillips CM (2015) Assessing cardiometabolic risk in middle-aged adults using body mass index and waist-height ratio: are two indices better than one? Journal of Epidemiology and Community Health [DOI] [Details]
(2015)Journal of Epidemiology and Community Health
Millar SR; O Connor JM; Buckley CM; Kearney PM; Perry IJ (2015) The prevalence and determinants of undiagnosed and diagnosed type 2 diabetes in middle-aged Irish adults Journal of Epidemiology and Community Health [DOI] [Details]
(2015)Cancer Research
O Connor D; Griffin DL; O’Sullivan JS; Millar SR; O’Keefe J; Bird BR; Deady S; Murphy CG (2015) Pre-surgical neutrophil-to-lymphocyte ratio (NLR) is a prognostic indicator of recurrence free and overall survival in breast cancer patients undergoing primary surgery Cancer Research [DOI] [Details]
(2014)Journal of Epidemiology and Community Health
Millar SR; Perry IJ; Van den Broeck J; Phillips CM (2014) Optimal central obesity measurement site for assessing cardiometabolic and type 2 diabetes risk in middle-aged adults Journal of Epidemiology and Community Health [DOI] [Details]
(2014)Journal of Epidemiology and Community Health
Millar SR; Perry IJ; Phillips CM (2014) Cardiometabolic risk profiles in pre-diabetes and diabetes defined by fasting plasma glucose and HbA1c levels in middle-aged adults Journal of Epidemiology and Community Health [DOI] [Details]

Published Reports

 YearPublication
(2022)European Web Survey on Drugs 2021: Irish Results.
Mongan D; Killeen N; Evans D; Millar SR; Keenan E; Galvin B (2022) European Web Survey on Drugs 2021: Irish Results. Health Research Board, Dublin. [Details]
(2022)Gambling in the Republic of Ireland: Results from the 2019–20 National Drug and Alcohol Survey.
Mongan D; Millar SR; Doyle A; Chakraborty S; Galvin B (2022) Gambling in the Republic of Ireland: Results from the 2019–20 National Drug and Alcohol Survey. Health Research Board, Dublin. [Details]
(2021)The 2019–20 Irish National Drug and Alcohol Survey: Main findings.
Mongan D; Millar SR; Galvin B (2021) The 2019–20 Irish National Drug and Alcohol Survey: Main findings. Health Research Board, Dublin. [Details]
(2020)Street tablet use in Ireland: A Trendspotter study on use, markets, and harms.
Duffin T; Keane M; Millar SR (2020) Street tablet use in Ireland: A Trendspotter study on use, markets, and harms. Ana Liffey Drug Project, Dublin. [Details]
(2018)Drug-related bloodborne viruses in Ireland.
Murphy N; Thornton L: O'Donnell K; Igoe D; Barry J; Bourke M; Conroy E; Crowley D; de Gascun C; Fitzgerald M; Galvin B; Horan A; Hurley C; Keating S; Keenan E; Lyons S; Millar SR; Ni Cheallaigh C; Woods S (2018) Drug-related bloodborne viruses in Ireland. Health Protection Surveillance Centre, Dublin. [Details]
(2017)What are the estimated costs of childhood overweight and obesity on the island of Ireland?.
Perry IJ; Millar SR; Balanda KP; Dee A; Bergin D; Carter L; Doherty E; Fahy L; Hamilton D; Jaccard A; Knuchel-Takano A; McCarthy L; McCune A; O'Malley G; Pimpin L; Queally M; Webber L (2017) What are the estimated costs of childhood overweight and obesity on the island of Ireland?. Safefood, Cork. [Details]

Thesis/Dissertation

 YearPublication
(2016)A Comparative Evaluation of Surrogate Measures of Adiposity as Indictors of Cardiometabolic Disease.
Millar SR (2016) A Comparative Evaluation of Surrogate Measures of Adiposity as Indictors of Cardiometabolic Disease. Thesis/Dissertation [Details]

Professional Activities

Committees

 CommitteeFunctionFrom / To
National Drugs Strategy Research Sub-Committee Member2022 /
Research Advisory Committee for the Irish National Drug and Alcohol Surveys Member2018 /

Employment

 EmployerPositionFrom / To
University College Cork / Health Research Board Research Support Officer01-JUL-16 /
University College Cork Postdoctoral Researcher01-JUL-16 /

Education

 YearInstitutionQualificationSubject
2011University College Cork MPHAdvanced Epidemiology
2016University College Cork PhDEpidemiology and Biostatistics

Teaching Activities

Teaching Interests

Module Co-ordinator
January 2019–Present
EH3014 Data Analysis for Public Health Research

Module Co-ordinator
January 2020–Present
EH2007 Public Health Research Report 

Lecturer
January 2016–Present
EH6031 Advanced Epidemiology 

Lecturer
September 2019–Present
EH4000 Advanced Applied Epidemiology 



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