Mary E. Duffy

Age, period, and cohort trends in mood disorder indicators and suicide-related outcomes in a nationally representative dataset, 2005–2017.

Jean M. Twenge, Alysha Cooper, Thomas E. Joiner et al. · Journal of Abnormal Psychology · 2019 · 1.4K citations · Full text

Substance Use, Mental Health, Cohort Trends +24

Trends in Mood and Anxiety Symptoms and Suicide-Related Outcomes Among U.S. Undergraduates, 2007–2018: Evidence From Two National Surveys

Mary E. Duffy, Jean M. Twenge, Thomas E. Joiner · Journal of Adolescent Health · 2019 · 549 citations

U.s. Undergraduates, Psychological Co-morbidities, Psychiatry +12

Methodological Triangulation: A Vehicle for Merging Quantitative and Qualitative Research Methods

Mary E. Duffy · Image the Journal of Nursing Scholarship · 1987 · 287 citations

Geometry, Education, Multiple Methods +22

A critique of cultural education in nursing

Mary E. Duffy · Journal of Advanced Nursing · 2001 · 178 citations

Methodological Issues In Web‐based Research

Mary E. Duffy · Journal of Nursing Scholarship · 2002 · 144 citations