Table 4.
Text clusters for abstract clustering.
| Cluster number | Topic/Cluster (frequency) (percentage) (RMSSD) | Descriptive terms |
|---|---|---|
| 1 | Risk factors (9589) (12%) (0.123) | disease, covid-19, clinical, case, risk, treatment, infection, associate, outcome, present, factor, increase, severe, mortality, diagnosis |
| 2 | Novel inquiries for research (6717) (8%) (0.105) | model, system base, approach, research, propose, process, new, provide, present, information, network, problem, different |
| 3 | Problems in China (6022) (7%) (0.112) | covid-19 coronavirus, case, disease, spread, pandemic, China health, country, outbreak, sars-cov2, infection, cause, world, model |
| 4 | Immune response (5346) (6%) (0.113) | cell, response immune, infection, role, virus, protein, mechanism, expression, system, play, human, viral |
| 5 | Impacts of COVID-19 related to brain issues (5181) (6%) (0.1155) | effect investigate, blood, activity, drug, increase, compare, measure, change, tissue, pressure, different, cerebral, monitor |
| 6 | Testing (4462) (5%) (0.118) | test, virus, antibody, sample, sars-cov-2, assay, coronavirus, infection, detection, viral, serum, pcr, sequence, reaction |
| 7 | Animal to human transmission (4252) (5%) (0.114) | infectious disease, virus, pathogen, human species, emerge, population, control, transmission, outbreak |
| 8 | Genomic structure of virus (4141) (5%) (0.107) | protein, virus, sequence, viral, cell, gene, genome, membrane, replication, host, process, contain, encode, identify |
| 9 | Impact of COVID-19 related to surgical procedures (4002) (5%) (0.093) | laparoscopic, surgery, technique, perform, undergo, procedure, outcome, approach, compare, invasive, resection, minimally, experience |
| 10 | Public and mental health concerns (3985) (5%) (0.100) | health, covid-19, public, pandemic, care, social impact, mental, system, global, challenge, population, service, people, response |
| 11 | Healthcare workforce hazards (3747) (5%) (0.108) | covid-19, healthcare, care, coronavirus, medical health, risk, worker, hospital, practice, personal, survey, challenge, impact |
| 12 | Impacts of COVID-19 related to breathing and lung issues (3489) (4%) (0.101) | respiratory, acute, severe, syndrome, disease, sars-cov-2, covid-19, infection, outbreak, pandemic |
| 13 | Child and adult COVID-19 relationship (2864) (3%) (0.104) | child, respiratory, infection, cause, virus, acute, tract, common, clinical, low, associate, illness, adult, human |
| 14 | Clinical trial research efforts (2762) (3%) (0.115) | group, trial, control, randomise, compare, clinical, effect, treatment, design, efficacy, control trial, undergo, outcome, safety, receive |
| 15 | Impacts of COVID-19 related to cancer (2476) (3%) (0.1130) | cancer, ablation, treatment, tumour, purpose, undergo, image, radiofrequency, material, carcinoma, perform, therapy, treat, compare |
| 16 | Literature reviews (2112) (3%) (0.089) | search, systematic, systematic review, database, embase, pubmed, literature, medline, publish, conduct, article, meta-analysis |
| 17 | Critically ill patients (1985) (2%) (0.099) | intensive care unit, hospital, covid-10, admit, critical, mortality, management, practice |
| 18 | Respiratory (1946) (2%) (0.106) | respiratory, lung, ventilation, acute, pulmonary, mechanical, syndrome, distress, pressure, acute respiratory disease syndrome, failure, ards, injury, airway, mechanical ventilation |
| 19 | Related infectious diseases (1837) (2%) (0.098) | influenza, virus, infection, pandemic, h1n1, respiratory, avian, cause, human, outbreak, viral, h5n1 |
| 20 | Heart/blood vessels (1218) (1%) (0.074) | aneurysm, treatment endovascular, artery, treat, intracranial, embolisation, coil, flow, purpose, device, case, cerebral, carotid |
| 21 | Animal coronaviruses (1201) (1%) (0.094) | mouse, virus hepatitis, cell, infection, strain, mhv, coronavirus, murine, infect, model, protein, viral, induce |
| 22 | Stroke/blood vessels (1195) (1%) (0.072) | stroke, acute, ischemic, outcome, endovascular, occlusion, thrombectomy, clinical, therapy, artery, trial, large |
| 23 | Obesity (962) (1%) (0.076) | gastric laparoscopic, gastrectomy, surgery, undergo, bariatric, sleeve, bypass, procedure, weight, loss, perform, complication |
| 24 | Hernia (933) (1%) (0.064) | repair, hernia, mesh, inguinal, abdominal, complication, recurrence, ventral |
| 25 | Cellular (840) (1%) (0.090) | ace2, receptor, enzyme, sars-cov-2, coronavirus, cell, covid-19, angiotensin, respiratory, severe, acute, protein, entry, cause |
| Total | 83,264 |
RMSSD: root-mean-square standard deviation.