group
(groop 
)
A number of similar objects or structures considered together, e.g., bacteria with similar metabolic characteristics. Atomic molecules and compounds with similar structures or properties are classified with certain groups.
alcohol g.The hydroxyl, –OH, which imparts alcoholic characteristics to organic compounds. These exist in three forms: primary, –CH2OH; secondary, =CHOH; and tertiary, COH.
amino acid g.The NH2 group that characterizes the amines.
azo g.In organic chemistry, the group –N=N–.
SEE: blood group.
clinical cooperative g.A network of clinicians and scientists who work together from widely separated locations to study and treat relatively rare diseases, e.g., certain forms of cancer. In cancer care, prominent clinical cooperative groups include the Children's Oncology Group (COG), the Gynecology Oncology Group (GOG), and the Eastern Cooperative Oncology Group (ECOG).
coli-aerogenes g.Coliform bacteria.
SEE: coliform (2).
colon-typhoid-dysentery g.The collective term for Escherichia, Salmonella, and Shigella bacteria.
ABBR: DRG
An indexing or classification system for stand ardizing prospective payment for medical care. Diseases and conditions are assigned to a single DRG when they are felt to share similar clinical and health care utilization features. The reimbursement for treating all individuals within the same DRG is the same regardless of actual cost to the health care facility.SEE: table - Top Diagnosis-Related Groups (DRGs) in the U.S..
focus g.A group of people with a specific problem, e.g., a disease, health care delivery system, marketed service, professional or management issue, to be solicited and studied for their opinions in order to identify common interests and make strategic plans to meet expressed needs.
SEE: under blood group.
historical control g.In a research study, a person or group of people who were treated in the past and who provide contrast and comparison to participants currently being studied. Because a wide variety of variables may change over time, the use of historical controls as opposed to a contemporary control group is often an indication that an investigation has less methodological rigor.
isogenous g.A cluster of cells that have come from one cell, e.g., the clusters of chondrocytes in cartilage.
SEE: Kell blood group.
SEE: Leapfrog Group.
ABBR: SAV mycobacterium
An emerging group of nontuberculous bacilli found widely in nature. They are slow-growing, acid-fast, occasionally cause opportunistic infections in immunocompromised patients, and are generally resistant to most antitubercular drugs.practice g.In evaluation and management coding, all of the health care providers in a specialty group, considered by payers to be a single entity.
prosthetic g.The nonamino acid component of a conjugated protein. It is usually the portion of an enzyme that is not an amino acid.
SEE: apoenzyme; holoenzyme.
rabies virus g.A genus of viruses whose official designation is Lyssavirus. The group includes the causative agent of rabies in humans.
ABBR: RUG
Any of 44 classifications into which nursing home patients may be assigned according to their activity levels, underlying illnesses, complexity of care, cognitive status, and other variables affecting their care. The primary use is for the calculation of insurance reimbursement.saccharide g.The monosaccharide unit, C6H10O5, a component of higher polysaccharides.
Streptococcus anginosus g.A group of viridans streptococci formerly known as the S. milleri group. The group includes S. constellatus, S. intermedius, and S. anginosus. These organisms often exist as commensals in the oral cavity but can cause abscesses in other locations.
SEE: Streptococcus anginosus group.
support g.A group of patients or families of patients with similar problems such as breast cancer, multiple sclerosis, or alcoholism, who meet to assist one another in coping with their problems and seeking solutions. The composition and focus of support groups vary. Some groups comprise patients who have or have had the same disorder. Discussions often center on current treatments, resources available for assistance, and what individuals can do to improve or maintain their health. Other groups involve those who have had the same psychological and emotional trauma, such as rape or the death of a loved one. Benefits expressed by members include the knowledge that they are not alone and that others have experienced the same or similar problems and have learned to cope effectively.SYN: mutual help group.
SEE: T-group.
validation g.In research, a group of subjects enrolled to determine whether the findings obtained from a previous cohort apply to another cohort and are therefore generally applicable.