journal-jKoreanMedSci-cord


Introduction

This is a Distant Reader "study carrel", a set of structured data intended to help the student, researcher, or scholar use & understand a corpus.

This study carrel was created on 2021-05-30 by Eric Morgan <emorgan@nd.edu>. The carrel was created using the Distant Reader cord process, and the input was the result of a query applied to a local mirror of CORD, a data set of scholarly articles on the topic of COVID-19. The actual query was: facet_journal:"J Korean Med Sci". The results of this query were saved in a cache and transformed into a set of plain text files. All of the analysis -- "reading" -- has been done against these plain text files. For example, a short narrative report has been created. This Web page is a more verbose version of that report.

All study carrels are self-contained -- no Internet connection is necessary to use them. Download this carrel for offline reading. The carrel is made up of many subdirectories and data files. The manifest describes each one in greater detail.

Size

There are 50 item(s) in this carrel, and this carrel is 65,437 words long. Each item in your study carrel is, on average, 2,110 words long. If you dig deeper, then you might want to save yourself some time by reading a shorter item. On the other hand, if your desire is for more detail, then you might consider reading a longer item. The following charts illustrate the overall size of the carrel.

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histogram of sizes
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box plot of sizes

Readability

On a scale from 0 to 100, where 0 is very difficult and 100 is very easy, the documents have an average readability score of 53. Consequently, if you want to read something more simplistic, then consider a document with a higher score. If you want something more specialized, then consider something with a lower score. The following charts illustrate the overall readability of the carrel.

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histogram of readability
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box plot of readability

Word Frequencies

By merely counting & tabulating the frequency of individual words or phrases, you can begin to get an understanding of the carrel's "aboutness". Excluding "stop words", some of the more frequent words include:

patients, covid, disease, korea, cases, study, infection, cov, coronavirus, respiratory, treatment, patient, clinical, sars, symptoms, hospital, medical, health, may, number, outbreak, among, severe, rate, data, confirmed, also, case, using, first, contact, reported, days, risk, control, time, however, infectious, mers, korean, tb, years, age, group, test, syndrome, virus, high, care, used

Using the three most frequent words, the three files containing all of those words the most are Coping with Dementia in the Middle of the COVID-19 Pandemic, Operation and Management of Seoul Metropolitan City Community Treatment Center for Mild Condition COVID-19 Patients, and Risk Factors for Mortality and Respiratory Support in Elderly Patients Hospitalized with COVID-19 in Korea.

The most frequent two-word phrases (bigrams) include:

coronavirus disease, respiratory syndrome, middle east, confirmed cases, infectious diseases, syndrome coronavirus, east respiratory, acute respiratory, novel coronavirus, contact rate, disease control, public health, active tb, effective contact, severe acute, infectious disease, social distancing, med sci, doc id, korean med, sci doi, cord uid, latent tb, clinical trials, health organization, world health, screening center, symptom onset, dementia patients, supplemental oxygen, risk factors, health care, clinical characteristics, mg dl, present study, among patients, mycoplasma pneumoniae, mortem inspection, mechanical ventilation, previous studies, chain reaction, polymerase chain, disease severity, individuals aged, viral load, contact tracing, korean society, clinical course, korea centers, preventive behaviors

And the three file that use all of the three most frequent phrases are Clinical Course and Outcomes of 3,060 Patients with Coronavirus Disease 2019 in Korea, January–May 2020 Isolation of Middle East Respiratory Syndrome Coronavirus from a Patient of the 2015 Korean Outbreak, and MERS-CoV Infection in a Pregnant Woman in Korea.

While often deemed superficial or sophomoric, rudimentary frequencies and their associated "word clouds" can be quite insightful:

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unigrams
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bigrams

Keywords

Sets of keywords -- statistically significant words -- can be enumerated by comparing the relative frequency of words with the number of times the words appear in an entire corpus. Some of the most statistically significant keywords in the carrel include:

covid-19, korea, sars, mers, patient, east, march, ctc, zumba, virus, usa, trial, sfts, seoul, screening, science, rsv, respiratory, rate, plasma, olfactory, npir, nema, ltbi, lrt, lfx, lee, kim, journal, hospital, hfnc, gene, event, esrd, dxc, disease, disaster, dementia, death, daegu, cell, caregiver, autopsy, ami, alte, aki, ageusia, active

And now word clouds really begin to shine:

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keywords

Topic Modeling

Topic modeling is another popular approach to connoting the aboutness of a corpus. If the study carrel could be summed up in a single word, then that word might be patients, and Therapeutic Efficacy and Safety of Prolonged Macrolide, Corticosteroid, Doxycycline, and Levofloxacin against Macrolide-Unresponsive Mycoplasma pneumoniae Pneumonia in Children is most about that word.

If the study carrel could be summed up in three words ("topics") then those words and their significantly associated titles include:

  1. patients - Therapeutic Efficacy and Safety of Prolonged Macrolide, Corticosteroid, Doxycycline, and Levofloxacin against Macrolide-Unresponsive Mycoplasma pneumoniae Pneumonia in Children
  2. covid - Incidence and Mortality Rates of Disasters and Mass Casualty Incidents in Korea: A Population-Based Cross-Sectional Study, 2000-2009
  3. covid - Proposal of the Autopsy Guideline for Infectious Diseases: Preparation for the Post-COVID-19 Era (abridged translation)

If the study carrel could be summed up in five topics, and each topic were each denoted with three words, then those topics and their most significantly associated files would be:

  1. covid, patients, infection - Proposal of the Autopsy Guideline for Infectious Diseases: Preparation for the Post-COVID-19 Era (abridged translation)
  2. patients, covid, study - Therapeutic Efficacy and Safety of Prolonged Macrolide, Corticosteroid, Doxycycline, and Levofloxacin against Macrolide-Unresponsive Mycoplasma pneumoniae Pneumonia in Children
  3. patients, journals, cov - Gene Expression Profile during Chondrogenesis in Human Bone Marrow derived Mesenchymal Stem Cells using a cDNA Microarray
  4. covid, patients, disease - Clinical Course and Outcomes of 3,060 Patients with Coronavirus Disease 2019 in Korea, January–May 2020
  5. contact, rate, cases - Estimating the Effectiveness of Non-Pharmaceutical Interventions on COVID-19 Control in Korea

Moreover, the totality of the study carrel's aboutness, can be visualized with the following pie chart:

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topic model

Noun & Verbs

Through an analysis of your study carrel's parts-of-speech, you are able to answer question beyonds aboutness. For example, a list of the most frequent nouns helps you answer what questions; "What is discussed in this collection?":

patients, cases, study, infection, disease, coronavirus, treatment, symptoms, patient, number, outbreak, rate, data, days, case, hospital, risk, contact, time, years, age, health, test, group, virus, results, care, syndrome, pneumonia, system, day, studies, characteristics, journals, pandemic, death, transmission, isolation, analysis, screening, period, diagnosis, diseases, facilities, control, children, admission, population, individuals, factors

An enumeration of the verbs helps you learn what actions take place in a text or what the things in the text do. Very frequently, the most common lemmatized verbs are "be", "have", and "do"; the more interesting verbs usually occur further down the list of frequencies:

used, reported, confirmed, including, shown, increasing, performed, need, based, considered, required, following, compared, related, occur, identified, causing, reduce, estimated, according, provide, associated, conducted, developed, suggests, received, observed, diagnosed, published, infected, taken, make, found, present, evaluate, collected, recommended, aged, admitted, prevent, died, analyzed, suspected, improved, determine, detected, apply, affect, obtained, tested

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nouns
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verbs

Proper Nouns

An extraction of proper nouns helps you determine the names of people and places in your study carrel.

COVID-19, Korea, SARS, CoV-2, MERS, TB, China, PCR, Korean, Fig, CoV, March, CTC, Disease, Daegu, Middle, East, February, Kim, Health, Seoul, Control, Hospital, ALTE, KCDC, Wuhan, Prevention, Coronavirus, •, National, DOI, Center, Table, Lee, Sci, Med, J, ESRD, World, RT, June, sha, Organization, RNA, University, Centers, mg, Society, RSV, PPE

An analysis of personal pronouns enables you to answer at least two questions: 1) "What, if any, is the overall gender of my study carrel?", and 2) "To what degree are the texts in my study carrel self-centered versus inclusive?"

we, it, their, our, they, he, them, its, her, his, she, you, i, us, itself, themselves, oneself, me, your, ours, him, herself

Below are words cloud of your study carrel's proper & personal pronouns.

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proper nouns
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pronouns

Adjectives & Verbs

Learning about a corpus's adjectives and adverbs helps you answer how questions: "How are things described and how are things done?" An analysis of adjectives and adverbs also points to a corpus's overall sentiment. "In general, is my study carrel positive or negative?"

respiratory, clinical, medical, severe, covid-19, high, first, infectious, higher, acute, mild, positive, negative, human, public, viral, effective, previous, significant, social, olfactory, novel, important, korean, active, autopsy, total, non, many, patient, new, early, different, latent, lower, epidemiological, asymptomatic, low, daily, present, post, common, initial, necessary, small, several, global, current, old, mortem

also, however, respectively, therefore, well, even, first, significantly, approximately, relatively, frequently, rapidly, moreover, especially, directly, furthermore, already, worldwide, still, recently, often, newly, previously, least, finally, immediately, initially, statistically, second, properly, rather, almost, less, just, fully, probably, currently, safely, later, globally, critically, always, third, regardless, particularly, never, lastly, highly, additionally, yet

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adjectives
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adverbs

Next steps

There is much more to a study carrel than the things outlined above. Use this page's menubar to navigate and explore in more detail. There you will find additional features & functions including: ngrams, parts-of-speech, grammars, named entities, topic modeling, a simple search interface, etc.

Again, study carrels are self-contained. Download this carrel for offline viewing and use.

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