What's the difference between cohort and group?

Cohort


Definition:

  • (n.) A body of about five or six hundred soldiers; the tenth part of a legion.
  • (n.) Any band or body of warriors.
  • (n.) A natural group of orders of plants, less comprehensive than a class.

Example Sentences:

  • (1) Only seven films (or 0.7 percent of the entire cohort) showed nodular or rounded opacities of the type typically seen in uncomplicated silicosis.
  • (2) The reference cohort consisted of 1725845 men otherwise gainfully employed.
  • (3) Therefore, we examined the relationship between the usual number of drinks consumed per occasion and the incidence of fatal injuries in a cohort of US adults.
  • (4) Detailed treatment data were obtained for 23 cases and 89 matched controls from the childhood cancer cohort.
  • (5) The 20-25 year-old cohort was found to yield the most promising results; however, a statistical difference was not found to exist using the volume or area.
  • (6) The pattern of neuropsychological deficits across HIV-1 states was similar to those found in cohorts of homosexual men.
  • (7) The relationship between subjective state of health and 5-year survival in an elderly cohort was examined.
  • (8) As it was, Labour limped in seven points and nearly two million votes behind the Conservatives because older cohorts of the electorate leant heavily to the Tories and grandpa and grandma turned up at the polling stations in the largest numbers.
  • (9) Psychologic depression as measured by the Minnesota Multiphasic Personality Inventory (MMPI) in a cohort of 2018 middle-aged men employed at the Western Electric Company in 1957-1958 was positively associated with 20-year incidence and mortality from cancer.
  • (10) Follow-up of a cohort of 1,165 steelworkers exposed to acid mists has been extended from 1981 to early 1986 for most cohort members, and information on smoking has also been collected.
  • (11) Second, the commonly drawn analogy between blocking in randomized trials and matching in cohort studies is misleading when one considers the impact of matching on covariate distributions.
  • (12) Although the entire cohort of neck patients, regardless of group assignment, improved significantly on all the outcome variables over the 6-week period, patients receiving intermittent traction performed significantly better than those assigned to the no traction group in terms of pain (P = 0.03), forward flexion (P = 0.01), right rotation (P = 0.004) and left rotation (P = 0.05).
  • (13) The HIV-1-positive cohort answered more questions correctly (mean = 8.5) than did the HIV-1-negative cohort (mean = 6.5), largely as a result of general information about AIDS among those with steady sexual partners.
  • (14) However, in this cohort under study, semen characteristics of AR(+) and AR(-) patients were similar.
  • (15) These occurred in the more heavily pretreated members of the cohort.
  • (16) The present investigation utilized this long-term cohort study to assess the role of drinking and cigarette smoking habits in the causation of liver cancer.
  • (17) To determine whether electromagnetic fields emitted by VDTs are associated with an increased risk of spontaneous abortion, a cohort of female telephone operators who used VDTs at work was compared with a cohort of operators who did not use VDTs.
  • (18) In a cohort of 417 patients admitted consecutively to the Coronary Care Unit for acute myocardial ischemia (unstable angina pectoris in 121, acute myocardial infarction in 296 patients) 21 cases of non arrhythmogenic sudden death occurred within 24 hours after admission.
  • (19) These observations were made on a large cohort that could not be accumulated at an individual center.
  • (20) In the first part of the investigation, we reviewed the occurrence of urinary tract infection in a cohort of 3,924 infants born at our institution during a 4-year period.

Group


Definition:

  • (n.) A cluster, crowd, or throng; an assemblage, either of persons or things, collected without any regular form or arrangement; as, a group of men or of trees; a group of isles.
  • (n.) An assemblage of objects in a certain order or relation, or having some resemblance or common characteristic; as, groups of strata.
  • (n.) A variously limited assemblage of animals or plants, having some resemblance, or common characteristics in form or structure. The term has different uses, and may be made to include certain species of a genus, or a whole genus, or certain genera, or even several orders.
  • (n.) A number of eighth, sixteenth, etc., notes joined at the stems; -- sometimes rather indefinitely applied to any ornament made up of a few short notes.
  • (n.) To form a group of; to arrange or combine in a group or in groups, often with reference to mutual relation and the best effect; to form an assemblage of.

Example Sentences:

  • (1) A group of interested medical personnel has been identified which has begun to work together.
  • (2) Once treatment began, no significant changes occurred in Group 1, but both PRA and A2 rose significantly in Groups 2 and 3.
  • (3) This trend appeared to reverse itself in the low dose animals after 3 hr, whereas in the high dose group, cardiac output continued to decline.
  • (4) All transplants were performed using standard techniques, the operation for the two groups differing only as described above.
  • (5) after operation for hip fracture, and merits assessment in other high-risk groups of patients.
  • (6) Seventeen patients (Group 1) had had no previous surgery, while 13 (Group 2) had had multiple previous operations.
  • (7) The effects of sessions, individual characteristics, group behavior, sedative medications, and pharmacological anticipation, on simple visual and auditory reaction time were evaluated with a randomized block design.
  • (8) Urinary ANF immunoreactivity was significantly enhanced by candoxatril in both groups (P less than 0.05 and P less than 0.01 in groups 1 and 2, respectively), with a more pronounced effect evident at the higher dose (P less than 0.01).
  • (9) The second group only with Haloperidol (same dose).
  • (10) A change in the pattern of care of children with IDDM, led to a pronounced decrease in hospital use by this patient group.
  • (11) If the method was taken into routine use in a diagnostic laboratory, the persistence of reverse passive haemagglutination reactions would enable grouping results to be checked for quality control purposes.
  • (12) We considered the days of the disease and the persistence of symptoms since the admission as peculiar parameters between the two groups.
  • (13) A group I subset (six animals), for which predominant cultivable microbiota was described, had a mean GI of 2.4.
  • (14) The half-life of 45Ca in the various calcium fractions of both types of bone was 72 hours in both the control and malnourished groups except the calcium complex portion of the long bone of the control group, which was about 100 hours.
  • (15) Between 22 HLA-identical siblings and 16 two-haplotype different siblings, a significant difference in concordance of reactions for the B-cell groups was noted.
  • (16) The cumulative incidence of grade II and III acute GVHD in the 'low dose' cyclosporin group was 42% compared to 51% in the 'standard dose' group (P = 0.60).
  • (17) The intrauterine mean active pressure (MAP) in the nulliparous group was 1.51 kPa (SD 0.45) in the first stage and 2.71 kPa (SD 0.77) in the second stage.
  • (18) Biden will meet with representatives from six gun groups on Thursday, including the NRA and the Independent Firearms Owners Association, which are both publicly opposed to stricter gun-control laws.
  • (19) Another interested party, the University of Miami, had been in talks with the Beckham group over the potential for a shared stadium project.
  • (20) However, the groups often paused less and responded faster than individual rats working under identical conditions.