1,953 articles
Nursing management (Nurs Manage)
Nursing Management (Nurs Manage, ISSN 0744-6314) is a US monthly peer-reviewed journal for nurse leaders, founded 1981, published by Lippincott Williams & Wilkins, MEDLINE- and Scopus-indexed, distinct from the UK title and Wiley's Journal of Nursing Management.
Nursing research
Nursing research: systematic inquiry building nursing's knowledge base, from Florence Nightingale's 1850s Crimean War work through the 1952 journal Nursing Research, grand nursing theories, and NIH's NINR.
Nursing Services
Nursing Services: the organization and administration of nursing activities (MeSH D009739, 1978). Covers staffing models, care delivery, workforce planning; 29.8 million nurses globally in 2023.
ObOd study
ObOd (Obesity and Oral Diseases in Adult Patients, NCT04602572) is a University of Bergen prospective cohort study of 400 obese adults at Haukeland University Hospital, tracking periodontal and caries outcomes over 18 months after non-surgical or bariatric weight-loss treatment.
ObservatoireEI study
ObservatoireEI (Observatoire EI, NCT03272724) is the French National Observatory on Infective Endocarditis, a prospective multicentre open cohort registry run from Nancy, enrolling adults with definite or possible IE since 2008.
Occupational Accidents
An occupational accident is a sudden, unforeseen event occurring during or in connection with work that results in injury, illness, or death, as defined by the International Labour Organization.
Occupational Exposure
Occupational exposure: worker contact with physical, chemical, or biological workplace hazards, measured against occupational exposure limits (OELs, PELs, TLVs, RELs) such as 8-hour TWAs and controlled via the hierarchy of controls.
OCTAVE trial (NCT01458951)
OCTAVE Induction 2 (NCT01458951), also called the CP-690,550 OCTAVE study, was Pfizer's phase 3 trial of tofacitinib 10 mg twice daily for 8 weeks in 541 patients with moderate-to-severe ulcerative colitis; remission 16.6% vs 3.6% placebo.
Odense University Hospital
Odense University Hospital, also known as Odense Universitetshospital (OUH), is one of Denmark's four university hospitals, in Odense, owned by the Region of Southern Denmark and partnered with the University of Southern Denmark.
OFA VS OBA1 study
OFA VS OBA1 (NCT07075302) is a retrospective observational cohort study at Hospital HM Nou Delfos, Barcelona, comparing opioid-free versus opioid-based anesthesia in 70 bariatric surgery patients, with 48-hour morphine consumption as the primary outcome.
OHCS study
OHCS study (One Hospital ClinicalService Project, NCT01007474) is Medtronic Italia's observational medical care quality improvement registry of patients with Medtronic implantable cardiac devices, started January 2004 across 41 sites in 9 countries, with hospital data ownership and subprojects on pacemakers, ICDs, stroke, and heart failure.
Ohio Department of Health
Ohio Department of Health (ODH), Columbus-based cabinet-level state public health agency led by Director Bruce Vanderhoff since 2021; created 1917, successor to the 1886 State Board of Health; works with 111 local health departments and holds PHAB accreditation.
OLIMPAS study
OLIMPAS (Osseointegrated Limb Implant Microbiome Population Adaptation Study), NCT06310239, is a recruiting observational study at Walter Reed tracking skin microbiome changes after osseointegration surgery in 50 amputees across eight timepoints, linking microbial species to wound healing rates.
OMOP common data model
The OMOP common data model is an open data standard that harmonizes observational health data such as electronic health records and claims, maintained by the OHDSI collaboration for network research.
Onchocerciasis Control Programme
The Onchocerciasis Control Programme (OCP) was a WHO-led program that fought river blindness in West Africa from 1974 to 2002, chiefly by aerial spraying of blackfly breeding sites.
One Health
One Health is an integrated approach that balances the linked health of people, animals, and ecosystems, addressing zoonotic diseases, antimicrobial resistance, and food safety through cross-sector collaboration.
Ontario Health
Ontario Health (Santé Ontario), agency created 2019 by the Government of Ontario to connect, coordinate and modernize health care; absorbed Cancer Care Ontario, Trillium Gift of Life Network and 14 LHINs; six regional teams, Ontario Health atHome subsidiary.
Ontario Ministry of Health
The Ontario Ministry of Health is the Ontario government department responsible for the province's publicly funded health-care system, managing OHIP, drug programs, and emergency health services.
OPAL BEYOND trial
OPAL Beyond (NCT01882439) was Pfizer's 6-month phase 3 trial of tofacitinib 5 and 10 mg twice daily versus placebo in 394 psoriatic arthritis patients with inadequate response to TNF inhibitors; ACR20 at month 3 was about 50% versus 24%.
Operation Dark Winter
Operation Dark Winter, a June 22-23, 2001 senior-level tabletop exercise at Andrews AFB, simulated a covert smallpox attack on the US; Sam Nunn played President, and its findings shaped US biodefense and vaccine stockpiling.
Operation Warp Speed
Operation Warp Speed (OWS) was the 2020 U.S. HHS-DOD public-private program that funded six COVID-19 vaccine candidates with over $10 billion, achieving two EUAs at about 95% efficacy by December 2020; later renamed the Countermeasures Acceleration Group.
Ophelia Dahl
Ophelia Dahl, daughter of Roald Dahl and Patricia Neal, co-founded Partners In Health in 1987 with Paul Farmer and others, led it as executive director 2001-2015, and chaired its board from 2002 to 2025; TIME100 2024, Radcliffe Medal 2023.
OPTIENOX-PCI trial
OPTIENOX-PCI (NCT03145675) is a completed phase 4 randomized trial at Peking Union Medical College Hospital comparing enoxaparin 0.75 vs 0.5 mg/kg and staged vs single dosing for trans-radial coronary angiography and PCI, measured by anti-Xa levels.
OPTIMISE trial
OPTIMISE trial (NCT06444711), University of Leeds randomised trial testing cardiology-led GP-practice reviews against NICE guidelines in 138 high-risk community-dwelling adults with cardiovascular, renal, metabolic, and pulmonary disease; distinct from OPTIMISE II and OPTIMISE Your Health.
ORARAD study
ORARAD (Clinical Registry of Dental Outcomes in Head and Neck Cancer Patients, NCT02057510) is a NIDCR-funded, six-site US prospective cohort of 572 head and neck cancer radiotherapy patients, reporting 17.7% two-year tooth failure, 3.1% confirmed osteoradionecrosis, and post-RT caries increment.
ORBIT-SHOCK trial
ORBIT-SHOCK (NCT06736665) is a Spanish Society of Cardiology randomized pilot trial of 50 patients comparing orbital atherectomy with intravascular lithotripsy for OCT-identified calcified coronary nodules, with OCT-measured stent expansion as the primary endpoint.
Organization and Administration
Organization and Administration (MeSH D009934) is the planning and managing of programs, services, and resources in health care, covering governance, hospital and personnel administration, and performance measurement in health systems.
Orthopaedic Research Society
Orthopaedic Research Society (ORS), founded 1954 in Chicago, non-profit 501(c)(3) musculoskeletal research society; publisher of the Journal of Orthopaedic Research and JOR Spine, founding member of ICORS, OREF, and IFMRS.
Oslo University Hospital
Oslo University Hospital (Oslo universitetssykehus) is Norway's largest hospital, a university hospital created in 2008 by merging Aker, Rikshospitalet, and Ullevål, with roots tracing to 1826.
OSS study
OSS study (NCT07453901): The Multicentre Prospective Observational Study on the Management of Septic Shock, a 5,000-patient prospective cohort led by Xavier Monnet at Bicetre Hospital, describing real-world septic shock treatment, monitoring practices, and guideline adherence from October 2026.