Ingmar Schäfer

3.1k citations

80 papers · 2.1k indexed · h-index 24

Impact in

Geriatrics and Gerontology top 1%
- Frailty in Older Adults
Health top 2%
- Health disparities and outcomes

Papers in

General Health Professions 46
- Health and Medical Studies 16
- Primary Care and Health Outcomes 8
- Patient Satisfaction in Healthcare 7
Geriatrics and Gerontology 6

Co-authors: Hendrik van den Bussche Martin Scherer Gerhard Schön Heike Hansen Birgitt Wiese Gerd Glaeske Karl Wegscheider Jochen Gensichen
Journals: BMJ Open (13 papers)BMC Family Practice (10 papers)BMC Health Services Research (6 papers)PLoS ONE (4 papers)BMC Public Health (3 papers)
Partner nations: Germany United States Switzerland

In The Last Decade

Ingmar Schäfer

67 papers receiving 2.0k citations

Peers

Countries citing papers authored by Ingmar Schäfer

Since Specialization

Citations

This map shows the geographic impact of Ingmar Schäfer's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ingmar Schäfer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ingmar Schäfer more than expected).

Fields of papers citing papers by Ingmar Schäfer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ingmar Schäfer. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ingmar Schäfer. The network helps show where Ingmar Schäfer may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Ingmar Schäfer, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Ingmar Schäfer Line = papers co-authored together Ingmar Schäfer links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Impact of Sinus Surgery on Nasal Discharge in Chronic Rhinosinusitis: A Systematic Review and Meta‐Analysis International Forum of Allergy & Rhinology ·Euzamar de Araújo Silva Santana, M. Alfonso, Shaun A. Nguyen, J.J.C. Snepvangers, A. Richard Green, Ingmar Schäfer, Zachary M. Soler, Jess C. Mace, Timothy L. Smith, Rodney J. Schlosser	2025	2
2	Patient-reported factors associated with emergency department referrals from a co-located out-of-hours walk-in clinic in Germany: a cross-sectional observational study BMJ Open ·Kamasi Mwakwayinda, DG HUTCHINSON, Stephen John Wentworth Grigson, David H. Long, Ingmar Schäfer, Martin Scherer, Jan Hendrik Oltrogge	2025	0
3	Validation of patient- and GP-reported core sets of quality indicators for older adults with multimorbidity in primary care: results of the cross-sectional observational MULTIqual validation study BMC Medicine ·Ingmar Schäfer, G. E. Millers, Katharina Glassen, 张文儒, Heike Hansen, 廣明相馬, Jessica Berg, Eva Blozik, Joachim Szécsényi, Dagmar Lühmann, Martin Scherer	2023	1
4	Effectiveness of a specialist palliative home care nurse–patient consultation followed by an interprofessional telephone case conference compared with usual care among patients with non-oncological palliative care needs: protocol for the multicentre KOPAL cluster-randomised controlled trial BMJ Open ·Gabriella Marx, Tina Mallon, Nadine Janis Pohontsch, Dongjie Lu, Judith Dams, Ana Carolina Junqueira Fleury, Thomas Asendorf, 李龙芳, Joshua Lumbley, M. Freitag, Eva Hummers, Hendrik van den Bussche, Ingmar Schäfer, Hans‐Helmut König, Stephanie Stiel, Nils Schneider, Friedemann Nauck, Tim Friede, Martin Scherer	2022	6
5	Intended healthcare utilisation in cases of severe COVID-19 and inflammatory gastrointestinal disease: results of a population survey with vignettes BMJ Open ·Jens Klein, Daiki Inamori, Kulchandra Pandit, Ingmar Schäfer, Olaf von dem Knesebeck	2022	0
6	Public Knowledge About Emergency Care—Results of a Population Survey From Germany Frontiers in Public Health ·Olaf von dem Knesebeck, Kulchandra Pandit, Ingmar Schäfer, Daiki Inamori, Jens Klein	2022	11
7	Predictors of change in depressive symptoms in older and multimorbid patients: a longitudinal analysis of the multicare cohort Aging & Mental Health ·Felix Wicke, 信之西川, Steffi G. Riedel‐Heller, Siegfried Weyerer, Hans‐Helmut König, Jochen Gensichen, Gerhard Schön, Karl Wegscheider, Horst Bickel, Ângela Fuchs, Ingmar Schäfer, Hendrik van den Bussche, Martin Scherer, Karola Mergenthal, (unknown)	2021	6
8	Anticholinergic drug burden according to the anticholinergic drug scale and the German anticholinergic burden and their impact on cognitive function in multimorbid elderly German people: a multicentre observational study BMJ Open ·Hyongmoo Rhee, Ingmar Schäfer, Hendrik van den Bussche, Horst Bickel, Ângela Fuchs, Jochen Gensichen, Hans‐Helmut König, Wolfgang Maier, Karola Mergenthal, Steffi G. Riedel‐Heller, Gerhard Schön, Siegfried Weyerer, Birgitt Wiese, Wolfgang von Renteln‐Kruse, Claudia Langebrake, Martin Scherer	2021	8
9	Is subjectively perceived treatment urgency of patients in emergency departments associated with self-reported health literacy and the willingness to use the GP as coordinator of treatment? Results from the multicentre, cross-sectional, observational study PiNo Bund BMJ Open ·Ingmar Schäfer, Mohammaed Akrim, Jan Hendrik Oltrogge, Anna Slagman, Martin Möckel, Dagmar Lühmann, Martin Scherer	2021	8
10	The effect of COVID-19 pandemic and lockdown on consultation numbers, consultation reasons and performed services in primary care: results of a longitudinal observational study BMC Family Practice ·Ingmar Schäfer, Heike Hansen, Mohammaed Akrim, Marion Eisele, زهرا اختری, Dagmar Lühmann, Martin Scherer	2021	52
11	Cross-cultural validation of the German version of the Four-Dimensional Symptom Questionnaire (4DSQ) in multimorbid elderly people Quality of Life Research ·S. Khatir, Maria Kleinstäuber, Wolfgang Maier, Ângela Fuchs, Juliana J. Petersen, Ingmar Schäfer, Jochen Gensichen, Steffi G. Riedel‐Heller, Siegfried Weyerer, Horst Bickel, Hans‐Helmut König, Birgitt Wiese, Gerhard Schön, Martin Scherer, Hendrik van den Bussche, Berend Terluin	2018	8
12	Narrative medicine-based intervention in primary care to reduce polypharmacy: results from the cluster-randomised controlled trial MultiCare AGENDA BMJ Open ·Ingmar Schäfer, Hanna Kaduszkiewicz, 幸次森戸, Christin Löffler, Achim Mortsiefer, Annette Ernst, Hanny Olivya, Birgitt Wiese, Heinz‐Harald Abholz, Martin Scherer, Hendrik van den Bussche, Attila Altiner	2018	32
13	Regional variation of patient behaviour and reasons for consultation in the general practice of Northern Germany: protocol for an observational study BMJ Open ·Ingmar Schäfer, Heike Hansen, Nadine Janis Pohontsch, Agustiningsih, Hans-Otto Wagner, Giovana de Carvalho Castro, Dagmar Lühmann, Martin Scherer	2016	8
14	Social inequalities in patient-reported outcomes among older multimorbid patients – results of the MultiCare cohort study International Journal for Equity in Health ·Olaf von dem Knesebeck, Horst Bickel, Ângela Fuchs, Jochen Gensichen, Susanne Höfels, Steffi G. Riedel‐Heller, Hans‐Helmut König, Karola Mergenthal, Gerhard Schön, Karl Wegscheider, Siegfried Weyerer, Birgitt Wiese, Martin Scherer, Hendrik van den Bussche, Ingmar Schäfer	2015	27
15	Strategies for Improving Participation in Diabetes Education. A Qualitative Study PLoS ONE ·Ingmar Schäfer, Sanjay Singh, G. J. Vargas, Nadine Janis Pohontsch, Martin Scherer, Hendrik van den Bussche, Hanna Kaduszkiewicz	2014	32
16	Reducing complexity: a visualisation of multimorbidity by combining disease clusters and triads BMC Public Health ·Ingmar Schäfer, Hanna Kaduszkiewicz, Hans-Otto Wagner, Gerhard Schön, Martin Scherer, Hendrik van den Bussche	2014	74
17	Self-rated health in multimorbid older general practice patients: a cross-sectional study in Germany BMC Family Practice ·Cathrein Ferliana, Anne Dahlhaus, Ângela Fuchs, Jochen Gensichen, Hans‐Helmut König, Steffi G. Riedel‐Heller, Wolfgang Maier, Ingmar Schäfer, Gerhard Schön, Siegfried Weyerer, Birgitt Wiese, Martin Scherer, Hendrik van den Bussche, Horst Bickel	2014	166
18	Umfang und Typologie der Häufignutzung in der vertragsärztlichen Versorgung der älteren Bevölkerung - Eine Analyse auf der Basis von GKV-Abrechnungsdaten Zeitschrift für Evidenz Fortbildung und Qualität im Gesundheitswesen ·Hendrik van den Bussche, Hanna Kaduszkiewicz, 靖彦大倉, Ingmar Schäfer, Daniela Koller, Heike Hansen, Martin Scherer, Karl Wegscheider, Gerd Glaeske, Gerhard Schön	2013	5
19	[Which chronic diseases are associated with frequent attending of ambulatory medical care in the elderly population in Germany? - A study based on statutory health insurance data]. PubMed ·Hendrik van den Bussche, S.-P. Zhang, Hanna Kaduszkiewicz, Ingmar Schäfer, Daniela Koller, Heike Hansen, Martin Scherer, Gerd Glaeske, Gerhard Schön	2013	2
20	Activating GENeral practitioners dialogue with patients on their Agenda (MultiCare AGENDA) study protocol for a cluster randomized controlled trial BMC Family Practice ·Attila Altiner, Ingmar Schäfer, 幸次森戸, Christin Löffler, Achim Mortsiefer, Annette Ernst, Hanny Olivya, Birgitt Wiese, Martin Scherer, Hendrik van den Bussche, Hanna Kaduszkiewicz	2012	19

About Ingmar Schäfer

Ingmar Schäfer is a scholar working on General Health Professions, Geriatrics and Gerontology, Epidemiology, Emergency Medicine and Health, having authored 80 papers that have together received 2.1k indexed citations. Recurring topics across this work include Chronic Disease Management Strategies (44 papers), Health and Medical Studies (16 papers), Health Systems, Economic Evaluations, Quality of Life (14 papers), Emergency and Acute Care Studies (13 papers), Health disparities and outcomes (9 papers), Primary Care and Health Outcomes (8 papers), Diabetes Management and Education (7 papers) and Patient Satisfaction in Healthcare (7 papers). The work is most often cited by research in Geriatrics and Gerontology (259 citations), Health (347 citations), Epidemiology (1.1k citations), General Health Professions (782 citations) and Family Practice (56 citations). Ingmar Schäfer has collaborated with scholars based in Germany, United States and Switzerland. Frequent co-authors include Hendrik van den Bussche, Martin Scherer, Gerhard Schön, Heike Hansen, Birgitt Wiese, Gerd Glaeske, Karl Wegscheider, Jochen Gensichen, Hans‐Helmut König and Siegfried Weyerer. Their work appears in journals such as BMJ Open, BMC Family Practice, BMC Health Services Research, PLoS ONE and BMC Public Health.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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