Julius Sim

28.3k total citations · 9 hit papers
197 papers, 19.4k citations indexed

About

Julius Sim is a scholar working on Pharmacology, General Health Professions and Psychiatry and Mental health. According to data from OpenAlex, Julius Sim has authored 197 papers receiving a total of 19.4k indexed citations (citations by other indexed papers that have themselves been cited), including 54 papers in Pharmacology, 44 papers in General Health Professions and 37 papers in Psychiatry and Mental health. Recurrent topics in Julius Sim's work include Musculoskeletal pain and rehabilitation (53 papers), Fibromyalgia and Chronic Fatigue Syndrome Research (23 papers) and Ethics in medical practice (18 papers). Julius Sim is often cited by papers focused on Musculoskeletal pain and rehabilitation (53 papers), Fibromyalgia and Chronic Fatigue Syndrome Research (23 papers) and Ethics in medical practice (18 papers). Julius Sim collaborates with scholars based in United Kingdom, United States and Ireland. Julius Sim's co-authors include Chris Wright, Jackie Waterfield, Benjamin Saunders, Tom Kingstone, Bernadette Bartlam, Clare Jinks, Heather Burroughs, Martyn Lewis, Christine Wright and Linda Chesterton and has published in prestigious journals such as The Lancet, JAMA and PLoS ONE.

In The Last Decade

Julius Sim

189 papers receiving 18.6k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Saturation in qualitative research: exploring its conceptualization and operationalization

2017 7.1k citations Benjamin Saunders, Julius Sim et al. Quality & Quantity profile →
The Kappa Statistic in Reliability Studies: Use, Interpretation, and Sample Size Requirements

2005 3.1k citations Julius Sim et al. profile →
The size of a pilot study for a clinical trial should be calculated in relation to considerations of precision and efficiency

2011 617 citations Julius Sim et al. profile →
Collecting and analysing qualitative data: issues raised by the focus group

1998 611 citations Julius Sim Journal of Advanced Nursing profile →
Interrater Reliability of Algometry in Measuring Pressure Pain Thresholds in Healthy Humans, Using Multiple Raters

2007 541 citations Julius Sim, Christine Wright et al. profile →
COVID-19 vaccination intention in the UK: results from the COVID-19 vaccination acceptability study (CoVAccS), a nationally representative cross-sectional survey

2020 536 citations Susan M. Sherman, Louise Smith et al. Human Vaccines & Immunotherapeutics profile →
Can sample size in qualitative research be determined a priori?

2018 420 citations Julius Sim, Benjamin Saunders et al. profile →
A systematic review and meta-analysis of the prevalence of chronic widespread pain in the general population

2015 287 citations Julius Sim et al. profile →
Focus group methodology: some ethical challenges

2019 240 citations Julius Sim, Jackie Waterfield Quality & Quantity profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Julius Sim United Kingdom	48	3.8k	2.6k	2.5k	2.4k	2.1k	197	19.4k
Vivian Welch Canada	65	4.7k 1.2×	2.9k 1.1×	3.8k 1.5×	1.3k 0.5×	1.6k 0.8×	297	26.4k
David G. Kleinbaum United States	51	2.8k 0.7×	1.4k 0.5×	2.6k 1.0×	1.4k 0.6×	1.4k 0.7×	128	25.4k
William H. Rogers United States	76	10.2k 2.7×	2.0k 0.7×	2.2k 0.9×	1.4k 0.6×	1.9k 0.9×	293	25.5k
Isabelle Boutron France	62	4.5k 1.2×	2.4k 0.9×	4.9k 2.0×	1.5k 0.6×	2.0k 1.0×	248	30.0k
Andrea C. Tricco Canada	70	6.6k 1.7×	1.1k 0.4×	4.9k 2.0×	2.7k 1.1×	2.3k 1.1×	344	25.9k
Alejandro R. Jadad Canada	46	3.9k 1.0×	2.4k 0.9×	3.2k 1.3×	1.2k 0.5×	1.3k 0.6×	143	28.6k
John Weinman United Kingdom	79	6.5k 1.7×	1.7k 0.7×	2.7k 1.1×	2.2k 0.9×	4.1k 2.0×	365	30.5k
Françis Guillemin France	63	4.5k 1.2×	3.8k 1.5×	2.9k 1.2×	1.6k 0.7×	3.0k 1.4×	457	33.0k
Beverley Shea Canada	64	3.0k 0.8×	2.0k 0.8×	3.3k 1.3×	1.2k 0.5×	1.0k 0.5×	217	25.4k
Tammy Hoffmann Australia	55	5.8k 1.5×	1.4k 0.5×	3.5k 1.4×	969 0.4×	1.7k 0.8×	277	19.7k

Countries citing papers authored by Julius Sim

Since Specialization

Citations

This map shows the geographic impact of Julius Sim'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 Julius Sim with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Julius Sim more than expected).

Fields of papers citing papers by Julius Sim

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Julius Sim. 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 Julius Sim. The network helps show where Julius Sim may publish in the future.

Co-authorship network of co-authors of Julius Sim

This figure shows the co-authorship network connecting the top 25 collaborators of Julius Sim. A scholar is included among the top collaborators of Julius Sim based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Julius Sim. Julius Sim is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

McKeown, Jane, et al.. (2025). Disparities in Patient Demographics at a Student-Run Free Clinic: Comparing Clinic Utilization to City, State, and National Trends. Journal of Community Health. 50(3). 507–513.

Davies, Simon, Elizabeth Lindley, David Keane, et al.. (2025). BioImpedance Spectroscopy to maintain Renal Output: the BISTRO randomised controlled trial. Health Technology Assessment. 29(32). 1–23. 1 indexed citations

Belcher, John, James Fotheringham, Elizabeth Lindley, et al.. (2024). Cost-effectiveness of bioimpedance-guided fluid management in patients undergoing haemodialysis: the BISTRO RCT. Health Technology Assessment. 29(32). 1–45. 1 indexed citations

Belcher, John, Elizabeth Lindley, David Keane, et al.. (2024). Impact of the Preservation of Residual Kidney Function on Hemodialysis Survival. Kidney360. 6(1). 112–120. 5 indexed citations

Davies, Simon, David Coyle, Elizabeth Lindley, et al.. (2023). Bio-impedance spectroscopy added to a fluid management protocol does not improve preservation of residual kidney function in incident hemodialysis patients in a randomized controlled trial. Kidney International. 104(3). 587–598. 16 indexed citations

O’Shea, Aidan, et al.. (2022). Barriers and facilitators related to self-management of shoulder pain: a systematic review and qualitative synthesis. Clinical Rehabilitation. 36(11). 1539–1562. 11 indexed citations

Sim, Julius, et al.. (2022). Stroke survivors’ views on their priorities for upper-limb recovery and the availability of therapy services after stroke: a longitudinal, phenomenological study. Disability and Rehabilitation. 45(19). 3059–3069. 13 indexed citations

Sherman, Susan M., Julius Sim, Richard Amlôt, et al.. (2021). Intention to have the seasonal influenza vaccination during the COVID-19 pandemic among eligible adults in the UK: a cross-sectional survey. BMJ Open. 11(7). e049369–e049369. 12 indexed citations

Sherman, Susan M., Louise Smith, Julius Sim, et al.. (2020). COVID-19 vaccination intention in the UK: results from the COVID-19 vaccination acceptability study (CoVAccS), a nationally representative cross-sectional survey. Human Vaccines & Immunotherapeutics. 17(6). 1612–1621. 536 indexed citations breakdown →

10.

Saunders, Benjamin, Julius Sim, Tom Kingstone, et al.. (2017). Saturation in qualitative research: exploring its conceptualization and operationalization. Quality & Quantity. 52(4). 1893–1907. 7062 indexed citations breakdown →

11.

Dawson, Angus & Julius Sim. (2015). The nature and ethics of natural experiments. Journal of Medical Ethics. 41(10). 848–853. 14 indexed citations

12.

Hanratty, Catherine E., Joseph G. McVeigh, Daniel Kerr, et al.. (2012). The Effectiveness of Physiotherapy Exercises in Subacromial Impingement Syndrome: A Systematic Review and Meta-Analysis. Seminars in Arthritis and Rheumatism. 42(3). 297–316. 179 indexed citations

13.

Evans, David, Alan Breen, Tamar Pincus, et al.. (2010). The Effectiveness of a Posted Information Package on the Beliefs and Behavior of Musculoskeletal Practitioners. Spine. 35(8). 858–866. 70 indexed citations

14.

Hay, Elaine M., Nadine E. Foster, Elaine Thomas, et al.. (2006). Effectiveness of community physiotherapy and enhanced pharmacy review for knee pain in people aged over 55 presenting to primary care: pragmatic randomised trial. BMJ. 333(7576). 995–995. 125 indexed citations

15.

Sim, Julius. (2001). Unreliable Reliability Analyses. Physiotherapy. 87(11). 612–612. 1 indexed citations

16.

Sim, Julius & Christine Wright. (2000). Research in health care : concepts, designs and methods. 340 indexed citations

17.

Sim, Julius. (1996). Informed consent and manual therapy. Manual Therapy. 1(2). 104–106. 15 indexed citations

18.

Sim, Julius. (1996). Johnstone MJ, Bioethics: a nursing perspective. Nursing Ethics. 3. 1 indexed citations

19.

Sim, Julius. (1991). Nursing research: is there an obligation on subjects to participate?. Journal of Advanced Nursing. 16(11). 1284–1289. 9 indexed citations

20.

Sim, Julius. (1989). Methodology and Morality in Physiotherapy Research. Physiotherapy. 75(4). 237–243. 7 indexed citations

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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