BMJ Open

Top Research Topics at BMJ Open?

The journal covers a variety of subjects, including Public health, Family medicine, Epidemiology, Internal medicine and Psychological intervention. The overlapping concepts between Cross-sectional study and Logistic regression are the key highlights of Public health study. While Family medicine is the focus of BMJ Open, it also provided insights into the studies of Health services research, Health care, MEDLINE, Protocol (science) and Qualitative research.

Qualitative research research presented in the journal encompasses a variety of subjects, including Focus group and Medical education. Some problems in Epidemiology that were presented in BMJ Open overlapped with concepts under Incidence (epidemiology), Cohort study, Demography, Pediatrics and Cohort. The in-depth study on Cohort study also explores topics in the intersecting field of Prospective cohort study.

The Internal medicine works, particularly on Retrospective cohort study are tackled in BMJ Open. Issues in Psychological intervention were discussed, taking into consideration concepts from other disciplines like Intervention (counseling), Physical therapy and Randomized controlled trial. While it focused on Physical therapy, it was also able to explore topics like Clinical trial and Quality of life.

• Public health (15.56%)
• Family medicine (14.95%)
• Epidemiology (13.89%)

What are the most cited papers published in the journal?

• A systematic review of evidence on the links between patient experience and clinical safety and effectiveness (979 citations)
• STARD 2015 guidelines for reporting diagnostic accuracy studies: explanation and elaboration (704 citations)
• What proportion of patients report long-term pain after total hip or knee replacement for osteoarthritis? A systematic review of prospective studies in unselected patients (671 citations)

Research areas of the most cited articles at BMJ Open:

The journal papers cover a variety of subjects, including Epidemiology, Pediatrics, Public health, Internal medicine and Family medicine. The works on Epidemiology tackled in the most cited publications bring together disciplines like Incidence (epidemiology), Gerontology, Cohort study, Cross-sectional study and Demography. The most cited publications explore issues in Public health which can be linked to other research areas like Mental health and Environmental health.

What topics the last edition of the journal is best known for?

• Internal medicine
• Disease
• Surgery

The previous edition focused in particular on these issues:

The journal primarily focuses on research topics in Public health, Epidemiology, Family medicine, Psychological intervention and Protocol (science). The journal addresses concerns in Public health which are intertwined with other disciplines, such as Cross-sectional study, Mental health, Health care and Environmental health. In it, Retrospective cohort study, Demography, Cohort study and Cohort are investigated in conjunction with one another to address concerns in Epidemiology research.

Research in Qualitative research and the interrelating topic of Medical education, Focus group and Context (language use) were among the subjects of interest in the Family medicine studies discussed in the journal. While work presented in BMJ Open provided substantial information on Psychological intervention, it also covered topics in Intervention (counseling) and Randomized controlled trial. It mainly concentrates on Protocol (science) but also investigates its connection with concepts in disciplines such as

• MEDLINE that intertwine with fields like Meta-analysis,
• Systematic review that connect with fields like CINAHL,
• Clinical trial which connect with Physical therapy..

The most cited articles from the last journal are:

• Health effects of climate change: an overview of systematic reviews. (167 citations)
• Demographic risk factors for COVID-19 infection, severity, ICU admission and death: a meta-analysis of 59 studies. (52 citations)
• Multiorgan impairment in low-risk individuals with post-COVID-19 syndrome: a prospective, community-based study. (40 citations)

Papers citation over time

A key indicator for each journal is its effectiveness in reaching other researchers with the papers published at that venue.

The chart below presents the interquartile range (first quartile 25%, median 50% and third quartile 75%) of the number of citations of articles over time.

Top authors and change over time

The top authors publishing in BMJ Open (based on the number of publications) are:

• Lehana Thabane (67 papers) published 10 papers at the last edition, 1 less than at the previous edition,
• Paul Little (53 papers) published 6 papers at the last edition, 3 less than at the previous edition,
• Aziz Sheikh (53 papers) published 5 papers at the last edition, 3 less than at the previous edition,
• Jeffrey Braithwaite (53 papers) published 6 papers at the last edition, 2 less than at the previous edition,
• Gordon H. Guyatt (52 papers) published 4 papers at the last edition the same number as at the previous edition.

The overall trend for top authors publishing in this journal is outlined below. The chart shows the number of publications at each edition of the journal for top authors.

Top affiliations and change over time

Only papers with recognized affiliations are considered

The top affiliations publishing in BMJ Open (based on the number of publications) are:

• University College London (852 papers) published 128 papers at the last edition, 11 more than at the previous edition,
• University of Oxford (819 papers) published 126 papers at the last edition, 3 more than at the previous edition,
• University of Sydney (643 papers) published 96 papers at the last edition, 1 more than at the previous edition,
• University of London (588 papers) published 106 papers at the last edition, 9 more than at the previous edition,
• University of Toronto (537 papers) published 85 papers at the last edition, 1 more than at the previous edition.

The overall trend for top affiliations publishing in this journal is outlined below. The chart shows the number of publications at each edition of the journal for top affiliations.

Publication chance based on affiliation

The publication chance index shows the ratio of articles published by the best research institutions in the journal edition to all articles published within that journal. The best research institutions were selected based on the largest number of articles published during all editions of the journal.

The chart below presents the percentage ratio of articles from top institutions (based on their ranking of total papers).Top affiliations were grouped by their rank into the following tiers: top 1-10, top 11-20, top 21-50, and top 51+. Only articles with a recognized affiliation are considered.

During the most recent 2021 edition, 4.54% of publications had an unrecognized affiliation. Out of the publications with recognized affiliations, 21.47% were posted by at least one author from the top 10 institutions publishing in the journal. Another 10.26% included authors affiliated with research institutions from the top 11-20 affiliations. Institutions from the 21-50 range included 15.97% of all publications and 52.30% were from other institutions.

Returning Authors Index

A very common phenomenon observed among researchers publishing scientific articles is the intentional selection of journals they have already attended in the past. In particular, it is worth analyzing the case when the authors participate in the same journal from year to year.

The Returning Authors Index presented below illustrates the ratio of authors who participated in both a given as well as the previous edition of the journal in relation to all participants in a given year.

Returning Institution Index

The graph below shows the Returning Institution Index, illustrating the ratio of institutions that participated in both a given and the previous edition of the conference in relation to all affiliations present in a given year.

The experience to innovation index

Our experience to innovation index was created to show a cross-section of the experience level of authors publishing in a journal. The index includes the authors publishing at the last edition of a journal, grouped by total number of publications throughout their academic career (P) and the total number of citations of these publications ever received (C).

The group intervals were selected empirically to best show the diversity of the authors' experiences, their labels were selected as a convenience, not as judgment. The authors were divided into the following groups:

• Novice - P < 5 or C < 25 (the number of publications less than 5 or the number of citations less than 25),
• Competent - P < 10 or C < 100 (the number of publications less than 10 or the number of citations less than 100),
• Experienced - P < 25 or C < 625 (the number of publications less than 25 or the number of citations less than 625),
• Master - P < 50 or C < 2500 (the number of publications less than 50 or the number of citations less than 2500),
• Star - P ≥ 50 and C ≥ 2500 (both the number of publications greater than 50 and the number of citations greater than 2500).

The chart below illustrates experience levels of first authors in cases of publications with multiple authors.

California Nursing License Requirements for BMJ Open Contributors

BMJ Open welcomes research submissions from a variety of disciplines, from epidemiology and public health to more specialized areas such as internal medicine, nursing, and family medicine. For our contributors from nursing, a necessary verification step involves adherence to the license requirements of their practicing state. Let's take, for instance, California.

If you are a nurse in California intending to contribute a research article to BMJ Open, you must be familiar with the california nursing license requirements. These requirements detail the nursing license education prerequisites and procedures any nurse ought to follow to be fully registered and licensed to practice in California.

These standards not only ensure the credibility of our contributors but also enhance the quality of research as they adhere to the state's cases, health frameworks, and medical guidelines. By doing so, we can continue to uphold the high-level standing of our research and provide readers with the most accurate, timely, and relevant studies in various medical fields.