PICO Portalanswers from OpenAlex & ORCID
Christopher M. Callahan
ResearcherPublications, citations & collaboration network
Christopher M. Callahan is a researcher indexed in PICO Portal from OpenAlex & ORCID.
How many works does Christopher M. Callahan have?
PICO Portalindexed works
Christopher M. Callahan has 302 works in the PICO Portal index. The count is the OpenAlex total, not the number of papers listed on this page.
How many citations does Christopher M. Callahan have?
PICO Portalcitation count
Christopher M. Callahan has 20,050 citations in the OpenAlex counts PICO Portal stores.
What is the h-index of Christopher M. Callahan?
PICO Portalh-index
Christopher M. Callahan has an h-index of 68 in OpenAlex.
What is the i10-index of Christopher M. Callahan?
PICO Portali10-index
Christopher M. Callahan has an i10-index of 152 in OpenAlex.
What is the ORCID of Christopher M. Callahan?
PICO Portalorcid
The ORCID for Christopher M. Callahan is on the source record.
What is the OpenAlex record for Christopher M. Callahan?
PICO Portalopenalex
The OpenAlex for Christopher M. Callahan is on the source record.
What are the most-cited papers on Christopher M. Callahan?
PICO Portalmost cited works
Collaborative Care Management of Late-Life Depression in the Primary Care Setting
Jürgen Unützer, Wayne Katon, Christopher M. Callahan, John W Williams, Enid M. Hunkeler, Linda H. Harpole, Marc Hoffing, Maria Pietronilla Penna, Polly Hitchcock Noël, Elizabeth Lin, Patricia A. Areán, Mark T. Hegel, Lingqi Tang, Thomas R. Belin, Sabine Oishi, Christopher Langston, for the IMPACT Investigators
Six-Item Screener to Identify Cognitive Impairment Among Potential Subjects for Clinical Research
Christopher M. Callahan, Frederick W. Unverzagt, Siu L. Hui, Anthony J. Perkins, Hugh C. Hendrie
Monitoring Depression Treatment Outcomes With the Patient Health Questionnaire-9
Bernd L we, J??rgen Un??tzer, Christopher M. Callahan, Anthony J. Perkins, Kurt Kroenke
Effectiveness of collaborative care for older adults with Alzheimer disease in primary care: a randomized controlled trial.
Christopher M. Callahan, Malaz Boustani, Frederick W. Unverzagt, Mary Guerriero Austrom, Teresa M. Damush, Anthony J. Perkins, Bridget A. Fultz, Siu L. Hui, Steven R. Counsell, Hugh C. Hendrie
Geriatric Care Management for Low-Income Seniors
Steven R. Counsell, Christopher M. Callahan, Daniel O. Clark, Wanzhu Tu, Amna Buttar, Timothy E. Stump, Gretchen D. Ricketts