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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Social Sciences and Humanities 51 2490 2269 1212 1089 221 26364

Gery W. Ryan publications per year

The chart shows the history of publications by Gery W. Ryan between 1991 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Gery W. Ryan published across 35 years, from 1991 to 2025, averaging 7.3 papers a year. Output peaked at 24 publications in 2009. 14 of the 255 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1991 to 2025. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 2009. 1991: 1 publication 1992: 1 publication 1993: 2 publications 1994: 0 publications 1995: 0 publications 1996: 3 publications 1997: 0 publications 1998: 5 publications 1999: 2 publications 2000: 6 publications 2001: 1 publication 2002: 0 publications 2003: 4 publications 2004: 5 publications 2005: 8 publications 2006: 9 publications 2007: 15 publications 2008: 8 publications 2009: 24 publications 2010: 18 publications 2011: 20 publications 2012: 13 publications 2013: 8 publications 2014: 11 publications 2015: 13 publications 2016: 9 publications 2017: 3 publications 2018: 6 publications 2019: 15 publications 2020: 7 publications 2021: 12 publications 2022: 5 publications 2023: 7 publications 2024: 4 publications 2025: 10 publications
1991 2025

255 publications in total across all disciplines

View publications per year as a table
Gery W. Ryan: publications per year, 1991 to 2025
Year Publications
1991 1
1992 1
1993 2
1994 0
1995 0
1996 3
1997 0
1998 5
1999 2
2000 6
2001 1
2002 0
2003 4
2004 5
2005 8
2006 9
2007 15
2008 8
2009 24
2010 18
2011 20
2012 13
2013 8
2014 11
2015 13
2016 9
2017 3
2018 6
2019 15
2020 7
2021 12
2022 5
2023 7
2024 4
2025 10
Total 255
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Gery W. Ryan publications per year - data summary

  • Gery W. Ryan, a Social Sciences and Humanities scholar from Kaiser Permanente, has 255 publications recorded across 35 years, from 1991 to 2025.
  • The oldest publication on record dates to 1991 and the most recent to 2025.
  • The most productive year is 2009, with 24 publications.
  • The least productive years with any output are 1991, 1992 and 2001, with 1 publication each.
  • 4 of the 35 years in the span carry no publications at all (1994, 1995, 1997 and 2002).
  • The rate of publication averages 7.3 papers per year over the whole span, or 8.2 per year counting only the 31 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 38 publications, 15% of the career total.
  • Split into equal eras - 1991-2002: 21 publications (1.8 per year); 2003-2014: 143 publications (11.9 per year); 2015-2025: 91 publications (8.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Gery W. Ryan publication distribution in Social Sciences and Humanities in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Social Sciences and Humanities in 2026. The highlighted bar marks where Gery W. Ryan sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 54 bars. Horizontal axis: publications, 44–53 to 570+. Vertical axis: number of scientists, 0 to 474. Most scientists, 474, have 114–123 publications. The last bar groups every scientist with 570 publications or more. The highlighted bar, 214–223 publications, is where this scientist sits. 44–53 publications: 28 scientists 54–63 publications: 61 scientists 64–73 publications: 161 scientists 74–83 publications: 225 scientists 84–93 publications: 301 scientists 94–103 publications: 390 scientists 104–113 publications: 406 scientists 114–123 publications: 474 scientists 124–133 publications: 453 scientists 134–143 publications: 434 scientists 144–153 publications: 407 scientists 154–163 publications: 411 scientists 164–173 publications: 391 scientists 174–183 publications: 313 scientists 184–193 publications: 319 scientists 194–203 publications: 304 scientists 204–213 publications: 285 scientists 214–223 publications: 246 scientists 224–233 publications: 213 scientists 234–243 publications: 170 scientists 244–253 publications: 167 scientists 254–263 publications: 162 scientists 264–273 publications: 138 scientists 274–283 publications: 138 scientists 284–293 publications: 113 scientists 294–303 publications: 106 scientists 304–313 publications: 95 scientists 314–323 publications: 101 scientists 324–333 publications: 81 scientists 334–343 publications: 69 scientists 344–353 publications: 56 scientists 354–363 publications: 36 scientists 364–373 publications: 42 scientists 374–383 publications: 41 scientists 384–393 publications: 44 scientists 394–403 publications: 27 scientists 404–413 publications: 30 scientists 414–423 publications: 20 scientists 424–433 publications: 29 scientists 434–443 publications: 29 scientists 444–453 publications: 25 scientists 454–463 publications: 19 scientists 464–473 publications: 21 scientists 474–483 publications: 11 scientists 484–493 publications: 17 scientists 494–503 publications: 7 scientists 504–513 publications: 6 scientists 514–523 publications: 12 scientists 524–533 publications: 10 scientists 534–543 publications: 7 scientists 544–553 publications: 6 scientists 554–563 publications: 12 scientists 564–569 publications: 8 scientists 570+ publications: 100 scientists
44–53 publications 570+

This scientist: 221 publications — 72nd percentile

72% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 570 publications or more.

View publications distribution as a table
Number of Social Sciences and Humanities scientists by publication count, Research.com 2026 ranking edition. Based on 7,777 ranked scientists.
Publications Scientists This scientist
44–53 28
54–63 61
64–73 161
74–83 225
84–93 301
94–103 390
104–113 406
114–123 474
124–133 453
134–143 434
144–153 407
154–163 411
164–173 391
174–183 313
184–193 319
194–203 304
204–213 285
214–223 246 221
224–233 213
234–243 170
244–253 167
254–263 162
264–273 138
274–283 138
284–293 113
294–303 106
304–313 95
314–323 101
324–333 81
334–343 69
344–353 56
354–363 36
364–373 42
374–383 41
384–393 44
394–403 27
404–413 30
414–423 20
424–433 29
434–443 29
444–453 25
454–463 19
464–473 21
474–483 11
484–493 17
494–503 7
504–513 6
514–523 12
524–533 10
534–543 7
544–553 6
554–563 12
564–569 8
570+ 100
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Gery W. Ryan publication distribution in Social Sciences and Humanities in 2026 - data summary

  • The chart plots the publication count of all 7,777 Social Sciences and Humanities scientists ranked by Research.com in 2026, grouped into 54 ranges running from 44–53 to 570+ publications.
  • Gery W. Ryan, a Social Sciences and Humanities scholar from Kaiser Permanente, records 221 publications - the 72nd percentile of the discipline.
  • 72% of ranked Social Sciences and Humanities scientists score the same or lower than Gery W. Ryan, and about 28% score higher.
  • The median of the discipline falls in the 164–173 publications range, and Gery W. Ryan ranks above the median.
  • The most crowded range is 114–123 publications, holding 474 scientists (6% of the field).
  • 57% of the field sits in the lowest quarter of the value range (up to 174–183 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 570 publications or more, 100 scientists in all (1% of the field).

Gery W. Ryan D-index placement in Social Sciences and Humanities in 2026

The chart shows the D-index (discipline H-index) distribution of Social Sciences and Humanities scientists ranked by Research.com in 2026. The highlighted bar marks where Gery W. Ryan sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 71 bars. Horizontal axis: D-Index, 30 to 100+. Vertical axis: number of scientists, 0 to 313. Most scientists, 313, have 42 D-Index. The last bar groups every scientist with 100 D-Index or more. The highlighted bar, 51 D-Index, is where this scientist sits. 30 D-Index: 177 scientists 31 D-Index: 210 scientists 32 D-Index: 222 scientists 33 D-Index: 188 scientists 34 D-Index: 181 scientists 35 D-Index: 243 scientists 36 D-Index: 261 scientists 37 D-Index: 272 scientists 38 D-Index: 278 scientists 39 D-Index: 300 scientists 40 D-Index: 297 scientists 41 D-Index: 308 scientists 42 D-Index: 313 scientists 43 D-Index: 300 scientists 44 D-Index: 269 scientists 45 D-Index: 260 scientists 46 D-Index: 228 scientists 47 D-Index: 251 scientists 48 D-Index: 203 scientists 49 D-Index: 186 scientists 50 D-Index: 187 scientists 51 D-Index: 166 scientists 52 D-Index: 138 scientists 53 D-Index: 141 scientists 54 D-Index: 131 scientists 55 D-Index: 137 scientists 56 D-Index: 109 scientists 57 D-Index: 129 scientists 58 D-Index: 95 scientists 59 D-Index: 105 scientists 60 D-Index: 106 scientists 61 D-Index: 86 scientists 62 D-Index: 94 scientists 63 D-Index: 77 scientists 64 D-Index: 79 scientists 65 D-Index: 59 scientists 66 D-Index: 68 scientists 67 D-Index: 51 scientists 68 D-Index: 49 scientists 69 D-Index: 40 scientists 70 D-Index: 43 scientists 71 D-Index: 40 scientists 72 D-Index: 50 scientists 73 D-Index: 46 scientists 74 D-Index: 43 scientists 75 D-Index: 45 scientists 76 D-Index: 45 scientists 77 D-Index: 30 scientists 78 D-Index: 25 scientists 79 D-Index: 31 scientists 80 D-Index: 29 scientists 81 D-Index: 18 scientists 82 D-Index: 21 scientists 83 D-Index: 26 scientists 84 D-Index: 15 scientists 85 D-Index: 15 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 12 scientists 89 D-Index: 7 scientists 90 D-Index: 19 scientists 91 D-Index: 20 scientists 92 D-Index: 13 scientists 93 D-Index: 9 scientists 94 D-Index: 13 scientists 95 D-Index: 8 scientists 96 D-Index: 7 scientists 97 D-Index: 6 scientists 98 D-Index: 6 scientists 99 D-Index: 6 scientists 100+ D-Index: 97 scientists
30 D-Index 100+

This scientist: 51 D-Index — 68th percentile

68% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 100 D-Index or more.

View D-Index distribution as a table
Number of Social Sciences and Humanities scientists by D-index, Research.com 2026 ranking edition. Based on 7,777 ranked scientists.
D-Index Scientists This scientist
30 177
31 210
32 222
33 188
34 181
35 243
36 261
37 272
38 278
39 300
40 297
41 308
42 313
43 300
44 269
45 260
46 228
47 251
48 203
49 186
50 187
51 166 51
52 138
53 141
54 131
55 137
56 109
57 129
58 95
59 105
60 106
61 86
62 94
63 77
64 79
65 59
66 68
67 51
68 49
69 40
70 43
71 40
72 50
73 46
74 43
75 45
76 45
77 30
78 25
79 31
80 29
81 18
82 21
83 26
84 15
85 15
86 19
87 19
88 12
89 7
90 19
91 20
92 13
93 9
94 13
95 8
96 7
97 6
98 6
99 6
100+ 97
Download as CSV

Gery W. Ryan D-index placement in Social Sciences and Humanities in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 7,777 Social Sciences and Humanities scientists ranked by Research.com in 2026, grouped into 71 ranges running from 30 to 100+ D-Index.
  • Gery W. Ryan, a Social Sciences and Humanities scholar from Kaiser Permanente, records 51 D-Index - the 68th percentile of the discipline.
  • 68% of ranked Social Sciences and Humanities scientists score the same or lower than Gery W. Ryan, and about 32% score higher.
  • The median of the discipline falls in the 45 D-Index range, and Gery W. Ryan ranks above the median.
  • The most crowded range is 42 D-Index, holding 313 scientists (4% of the field).
  • 59% of the field sits in the lowest quarter of the value range (up to 47 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 100 D-Index or more, 97 scientists in all (1% of the field).

Overview

Gery W. Ryan is affiliated with Kaiser Permanente in the United States and has made contributions across several areas within the health professions and medicine. Their research spans a range of interdisciplinary topics related to healthcare policy, population health, and clinical outcomes, with a particular focus on vulnerable and diverse patient populations.

The main fields of study for this researcher are Health Professions and Medicine, with a deeper engagement in subfields such as General Health Professions, Public Health, Environmental and Occupational Health, Clinical Psychology, Economics and Econometrics, and Experimental and Cognitive Psychology.

Their work covers core topics including:

  • Healthcare Policy and Management
  • Food Security and Health in Diverse Populations
  • Palliative Care and End-of-Life Issues
  • Primary Care and Health Outcomes
  • Geriatric Care and Nursing Homes
  • Migration, Health and Trauma
  • Electronic Health Records Systems

Gery W. Ryan has published in various peer-reviewed journals, many of which have appeared multiple times. Frequent publication venues include:

  • JAMA Network Open
  • Pediatric Pulmonology
  • Journal of Manipulative and Physiological Therapeutics
  • Journal of General Internal Medicine
  • BMC Public Health

Among recent papers authored or co-authored by Ryan are:

  • "Deficits in Advance Care Planning for Patients With Decompensated Cirrhosis at Liver Transplant Centers" (2021, JAMA Internal Medicine)
  • "Assessment of Perspectives on Health Care System Efforts to Mitigate Perceived Risks Among Immigrants in the United States" (2020, JAMA Network Open)
  • "Original Research: Nurses' Experiences with Racial, Ethnic, Cultural, and Religious Discrimination in the Workplace: A Qualitative Study" (2023, AJN American Journal of Nursing)
  • "Partnered decision support: Parental perspectives of completing a pre-visit pediatric asthma questionnaire via the patient portal" (2021, Pediatric Pulmonology)
  • "Income as a Predictor of Self-Efficacy for Managing Pain and for Coping With Symptoms Among Patients With Chronic Low Back Pain" (2021, Journal of Manipulative and Physiological Therapeutics)

Ryan has collaborated frequently with several coauthors, including:

  • Geoffrey M. Gusoff
  • Arpan Patel
  • Anne M. Walling
  • Neil S. Wenger
  • Mindy K. Ross

Best Publications

  • Techniques to Identify Themes

    Gery W. Ryan;H. Russell Bernard

  • Data Management and Analysis Methods

    Gery W. Ryan;H. Russell Bernard

  • Analyzing Qualitative Data: Systematic Approaches

    H. Russell Bernard;Gery Wayne Ryan

  • The Top Patient Safety Strategies That Can Be Encouraged for Adoption Now

    Paul G. Shekelle;Peter J. Pronovost;Robert M. Wachter;Kathryn M. McDonald

  • HIV-Related Stigma among People with HIV and their Families: A Qualitative Analysis

    Laura M. Bogart;Burton O. Cowgill;David P. Kennedy;Gery W. Ryan

  • identification of human trafficking victims in health care settings

    Susie B. Baldwin;David P. Eisenman;Jennifer N. Sayles;Gery Ryan

  • Advancing the Science of Patient Safety

    Paul G. Shekelle;Peter J. Pronovost;Robert M. Wachter;Stephanie L. Taylor

  • Experiences of social stigma and implications for healthcare among a diverse population of HIV positive adults.

    Jennifer N. Sayles;Gery W. Ryan;Junell S. Silver;Catherine A. Sarkisian

  • Content validity of patient-reported outcome measures: perspectives from a PROMIS meeting

    Susan Magasi;Gery Ryan;Dennis Revicki;William Lenderking

  • Using Community-Based Participatory Research to Identify Potential Interventions to Overcome Barriers to Adolescents' Healthy Eating and Physical Activity

    Ying-Ying Goh;Laura M. Bogart;Laura M. Bogart;Laura M. Bogart;Bessie Ko Sipple-Asher;Kimberly E. Uyeda

  • Trust influences response to public health messages during a bioterrorist event.

    Lisa S. Meredith;David Eisenman;Hilary J. Rhodes;Gery W. Ryan

  • Reasons for disclosure of HIV status by people living with HIV/AIDS and in HIV care in Uganda: an exploratory study.

    Sarah N. Ssali;Lynn Atuyambe;Christopher Tumwine;Eric Segujja

  • Characteristics of the original patient navigation programs to reduce disparities in the diagnosis and treatment of breast cancer.

    Roberto B. Vargas;Roberto B. Vargas;Gery W. Ryan;Catherine A. Jackson;Rian Rodriguez

  • What do sequential behavioral patterns suggest about the medical decision-making process? : Modeling home case management of acute illnesses in a rural Cameroonian village

    Gery W. Ryan

  • Measuring the typicality of text : Using multiple coders for more than just reliability and validity checks

    Gery W. Ryan

  • Incarcerated Youths’ Perspectives on Protective Factors and Risk Factors for Juvenile Offending: A Qualitative Analysis

    Elizabeth S. Barnert;Raymond Perry;Veronica F. Azzi;Rashmi Shetgiri

  • Implementation and maintenance of quality improvement for treating depression in primary care

    Lisa S. Meredith;Peter Mendel;Marjorie L. Pearson;Shin-Yi Wu

  • Education for a New Era : Design and Implementation of K-12 Education Reform in Qatar

    Dominic J. Brewer;Catherine H. Augustine;Gail L. Zellman;Gery W. Ryan

  • Successive Free Listing: Using Multiple Free Lists to Generate Explanatory Models

    Gery W. Ryan;Justin M. Nolan;P. Stanley Yoder

  • Relationship between routinization of daily behaviors and medication adherence in HIV-positive drug users.

    Glenn J. Wagner;Gery W. Ryan

  • Education for a New Era: Design and Implementation of K-12 Education Reform in Qatar. Monograph.

    Dominic J. Brewer;Catherine H. Augustine;Gail L. Zellman;Gery Ryan

Frequent Co-Authors

David N. Kennedy
David N. Kennedy University of Massachusetts Chan Medical School
Suzanne L. Wenzel
Suzanne L. Wenzel University of Southern California
Mark A. Schuster
Mark A. Schuster Kaiser Permanente
Joan S. Tucker
Joan S. Tucker RAND Corporation
Daniela Golinelli
Daniela Golinelli RAND Corporation
Glenn Wagner
Glenn Wagner RAND Corporation
Harold Alan Pincus
Harold Alan Pincus Columbia University
Laura M. Bogart
Laura M. Bogart RAND Corporation
Dominic J. Brewer
Dominic J. Brewer University of Southern California
Katherine L. Kahn
Katherine L. Kahn University of California, Los Angeles

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