rate

rate (rāt) the speed or frequency with which an event or circumstance occurs per unit of time, population, or other standard of comparison.

---

basal metabolic rate  an expression of the rate at which oxygen is used by body cells, or the calculated equivalent heat production by the body, in a fasting subject at complete rest. Abbreviated BMR.

birth rate  the number of births in a specified area during a defined period for the total population, often further qualified as to which portion of the population is being examined.

case fatality rate  the ratio of the number of deaths caused by a specified disease to the number of diagnosed cases of that disease.

circulation rate  the amount of blood pumped through the body by the heart per unit time.

death rate  an expression of the number of deaths in a population at risk during one year. The crude death r. is the ratio of the number of deaths to the total population of an area; the age-specific death r. is the ratio of the number of deaths in a specific age group to the number of persons in that age group; the cause-specific death r. is the ratio of the number of deaths due to a specified cause to the total population.

dose rate  the amount of any agent administered per unit of time.

erythrocyte sedimentation rate  (ESR) the rate at which erythrocytes sediment from a well-mixed specimen of venous blood, as measured by the distance that the top of a column of erythrocytes falls in a specified time interval under specified conditions.

fatality rate  case fatality r.

fertility rate  a measure of fertility in a specified population over a specified period of time, particularly the general fertility r., the number of live births in a geographic area in a year per 1000 women of childbearing age.

fetal death rate  the ratio of the number of fetal deaths in one year to the total number of both live births and fetal deaths in that year.

five-year survival rate  an expression of the number of survivors with no trace of disease five years after each has been diagnosed or treated for the same disease.

glomerular filtration rate  (GFR) an expression of the quantity of glomerular filtrate formed each minute in the nephrons of both kidneys, usually measured by the rate of clearance of creatinine.

growth rate  an expression of the increase in size of an organic object per unit of time.

heart rate  the number of contractions of the cardiac ventricles per unit of time.

incidence rate  the probability of developing a particular disease during a given period of time; the numerator is the number of new cases during the specified time period and the denominator is the population at risk during the period.

morbidity rate  an inexact term that can mean either the incidence rate or the prevalence rate.

mortality rate  death r.

prevalence rate  the number of people in a population who have a disease at a given time: the numerator is the number of existing cases of disease at a specified time and the denominator is the total population.

pulse rate  the number of pulsations noted in a peripheral artery per unit of time.

respiration rate  the number of movements of the chest wall per unit of time, indicative of inhalation and exhalation.

sedimentation rate  the rate at which a sediment is deposited in a given volume of solution, especially when subjected to the action of a centrifuge.

stillbirth rate  fetal death r.

---

rate (rt)

n.

1. A quantity measured with respect to another measured quantity.

2. A measure of a part with respect to a whole; a proportion.

---

rate

Etymology: L, ratus, reckoned

a numeric ratio, often used in the compilation of data concerning the prevalence and incidence of events, in which the number of actual occurrences appears as the numerator and the number of possible occurrences appears as the denominator. When 1 person in 15 fails an examination, the failure rate is said to be 1/15 (or "one in fifteen"). Standard rates are stated in conventional units of population such as neonatal mortality per 1000 or maternal mortality per 100,000.

---

rate [rāt]

the speed or frequency with which an event or circumstance occurs per unit of time, population, or other standard of comparison.

adjusted rate a fictitious summary rate statistically adjusted to remove the effect of a variable, such as age or sex, to permit unbiased comparison between groups having different compositions with respect to these variables. See also crude rate and specific rate.

attack rate in the analysis of acute outbreaks of disease, the proportion of persons who are exposed to the disease during the outbreak who do become ill.

basal metabolic rate an expression of the rate at which oxygen is utilized in a fasting subject at complete rest as a percentage of a value established as normal for such a subject. Abbreviated BMR.

birth rate the number of live births in a geographic area in a defined period, usually one year, relative to some specified population. For the crude birth rate, it is the average total population or the midyear population in the area during the period. Specific birth rates for subsets of the population may also be calculated, for example, an age-specific birth rate is limited to the population of females of a defined age range.

case fatality rate the number of deaths due to a specific disease as compared to the total number of cases of the disease.

crude rate one giving the total number of events occurring in an entire population over a period of time, without reference to any of the individuals or subgroups within the population. See also adjusted rate and specific rate.

death rate the number of deaths in a certain period of time divided by the total of a given population. The crude death rate is the ratio of the number of deaths in a geographic area in one year divided by the average population in the area during the year. The age-specific death rate is the ratio of the number of deaths occurring in a specified age group to the average population of that group. The cause-specific death rate is the ratio of the number of deaths due to a specified cause to the average total population. Called also mortality rate.

Historic example of death rates (per 100,000) for leading causes of death for men aged 25–44 years. From Centers for Disease Control and Prevention: Morbidity and Mortality Weekly Report 42:483, 1993.

DEF rate an expression of dental caries experienced in primary teeth, calculated by adding number of those requiring filling (D), decayed teeth requiring extraction (E), and those that have already been successfully filled (F); missing primary teeth are not included in the calculation.

DMF rate an expression of the condition of the permanent teeth based on the number of teeth decayed, missing (or indicated for removal), and filled or bearing restorations. It is calculated by adding the number of carious permanent teeth requiring filling (D), carious ones requiring extraction (Mr), ones previously extracted because of caries (Mp), and permanent teeth (F).

dose rate the amount of any therapeutic agent administered per unit of time.

erythrocyte sedimentation rate (ESR) see erythrocyte sedimentation rate.

fatality rate the death rate in a specific group of persons simultaneously affected by some event or circumstances, such as a natural disaster.

fertility rate a measure of fertility in a defined population over a specified period of time, usually one year; particularly the general fertility rate, but also including more specific rates such as those for females of a given parity or a particular age range or that describing the completed rate for females who have finished childbearing.

fetal death rate the ratio of the number of fetal deaths in one year to the total number of both live births and fetal deaths in that year.

five-year survival rate an expression of the number of survivors with no trace of a given disease five years after each has been diagnosed or treated for the disease.

flow rate flow (def. 2).

forced expiratory flow rate forced expiratory flow.

general fertility rate the most widely used measure of fertility; the number of live births in a geographic area in a year per 1000 women of childbearing age, which is usually defined as age 15 to 44 years.

glomerular filtration rate an expression of the quantity of glomerular filtrate formed each minute in the nephrons of both kidneys, calculated by measuring the clearance of specific substances, e.g., inulin or creatinine.

growth rate an expression of the increase in size of an organic object per unit of time.

heart rate the number of contractions of the cardiac ventricles per unit of time (usually per minute).

incidence rate the risk of developing a particular disease during a given period of time; the numerator of the rate is the number of new cases during the specified time period and the denominator is the population at risk during the period. Compare prevalence r.

infant mortality rate the ratio of the number of deaths in one year of children less than one year of age to the number of live births in that year.

intrinsic rate in cardiac pacing terminology, the heart rate unaided by an artificial pacemaker, expressed in beats per minute (bpm). See also cycle length.

maternal mortality rate a rate in which the numerator is the number of maternal deaths ascribed to puerperal causes in one year; the number of live births in that year is often used as the denominator, although to make a true rate the denominator should be the number of pregnancies (live births plus fetal deaths). Called also puerperal mortality rate.

maximal expiratory flow rate (MEFR) maximal expiratory flow.

maximal midexpiratory flow rate (MMFR) maximal midexpiratory flow.

mendelian rate an expression of the numerical relations of the occurrence of distinctly contrasted mendelian characteristics in succeeding generations of hybrid offspring.

metabolic rate an expression of the amount of oxygen consumed by the body cells.

morbidity rate an inexact term that can mean either the incidence rate or the prevalence rate.

mortality rate death rate.

neonatal mortality rate the ratio of the number of deaths in one year of children less than 28 days of age to the number of live births in that year.

paced rate in cardiac pacing terminology, the rate of pulses of an artificial pacemaker, expressed as pulses per minute (ppm). See also cycle length.

perinatal mortality rate the ratio of the number of the sum of fetal deaths after 28 or more weeks of gestation (stillbirths) and deaths of infants less than 7 days of age in one time period and population to the sum of the number of live births and fetal deaths after 28 or more weeks of gestation (stillbirths) in that same time period and population.

postneonatal mortality rate the ratio of the number of deaths in a given year of children between the 28th day of life and the first birthday relative to the difference between the number of the live births and neonatal deaths in that year; the denominator is sometimes simplified, less correctly, to the number of live births. The ratio is sometimes approximated as the difference between the infant mortality rate and the neonatal mortality rate.

prevalence rate the number of people in a population who have a disease at a given time; the numerator is the number of existing cases of disease at a specified time and the denominator is the total population. Time may be a point or a defined interval, and is traditionally the former if unspecified. Compare incidence r.

puerperal mortality rate maternal mortality r.

pulse rate the rate of the pulse, measured as number of pulsations in an artery per unit of time; normally between 60 and 80 per minute in an adult.

respiration rate the number of inhalations and exhalations per unit of time, usually measured by observation of chest movements and averaging 16 to 20 per minute in an adult.

sedimentation rate the rate at which a sediment is deposited in a given volume of solution, especially when subjected to the action of a centrifuge; see also erythrocyte sedimentation rate.

slew rate in cardiac pacing, the rate, expressed in units of mV/msec, at which an R wave reaches peak amplitude; it represents the maximum rate of change of amplifier output voltage.

specific rate a rate that applies to a specific demographic subgroup, e.g., individuals of a specific age, sex, or race, giving the total number of events in relation only to that subgroup. See also adjusted rate and crude rate.

stillbirth rate fetal death rate.

---

rate,

n measurement of a thing by its ratio or given in relation to some standard.

rate, basal metabolic,

n See basal metabolic rate.

rate, DEF,

n an expression of dental caries experience in primary teeth. The DEF rate is calculated by adding the number of decayed primary teeth requiring filling (D), decayed primary teeth requiring extraction (E), and primary teeth successfully filled (F). Missing primary teeth are not included in the count because whether they were extracted because of caries or exfoliated normally is often impossible to determine.

rate, DMF index,

n a method of classifying the condition of the teeth based on the number of teeth in a given oral cavity that are decayed, missing, or indicated for removal and of those filled or bearing restorations.

rate, erythrocyte sedimentation

n the rate of settling of erythrocytes by gravity under conditions in which all factors affecting the rate are corrected, standardized, or eliminated except for alterations in the physicochemical properties of the plasma proteins. These alterations are the basis for interpretation of the rate. There is an increase in the rate in most infections. Sedimentation velocity is useful in prognosis to determine recovery from infection. Normal values vary with the method used in the determination.

rate, heart,

n the rate of the heartbeat, expressed as the number of beats per minute. The heart rate is reflected in the pulse rate. The cardiac rate of contraction is described as normal (70 beats/min), rapid (more than 100 beats/min), or slow (less than 55 beats/min). Disturbances in heart rate and rhythm may be paroxysmal or persistent. Descriptive terms are
tachycardia (increased, shallow heart rate to compensate for inadequate cardiac output) and
brady-cardia (slow, firm heart rate caused by cardiac sinus mechanisms and the vagal effect over the sympathetic innervation of the heart).

rate, survival,

n the percentage of survivals within a certain study; in dentistry, it refers to the percentage of implants that are functioning within acceptable standards.

---

rate

the frequency with which an event or circumstance occurs per unit of time.

---

attack rate

the proportion of a population affected by a specific condition during a prescribed, usually short, period of time.

attribute-specific rate

the rate of occurrence of a specific attribute.

basal metabolic rate (BMR)

an expression of the rate at which oxygen is utilized in a fasting subject at complete rest as a percentage of a value established as normal for such a subject.

birth rate

the number of births during one year for the total population (crude birth rate), for the female population (refined birth rate), or for the female population of reproductive age (true birth rate).

case rate

morbidity rate.

case fatality rate

the number of deaths due to a specific disease as compared with the total number of cases of the disease.

cohort rate

the rate of occurrence of e.g. disease in cohorts.

death rate

the number of deaths per stated number of animals (1000 or 10,000 or 100,000) in a certain region in a certain time period.

erythrocyte sedimentation rate (ESR)

see erythrocyte sedimentation rate.

fatality rate

the number of deaths caused by a specific circumstance or disease, expressed as the absolute or relative number among individuals encountering the circumstance or having the disease.

five-year survival rate

an expression of the number of survivors with no trace of disease 5 years after each has been diagnosed or treated for the same disease.

forced expiratory flow rate (FEF)

see maximal expiratory flow rate (below).

glomerular filtration rate

an expression of the quantity of glomerular filtrate formed each minute in the nephrons of both kidneys, calculated by measuring the clearance of specific substances, e.g. inulin or creatinine.

growth rate

an expression of the increase in size of an organic object per unit of time.

heart rate

the number of contractions of the cardiac ventricles per unit of time.

incidence rate

describes the probability of a new case occurring during a stated time interval.

infection rate

percentage of the population from which a specific infectious pathogen is isolated.

rate-limiting enzymes

rate controlling enzymic steps in metabolic pathways. Often allosteric enzymes with allosteric effector sites but can be controlled through substrate availability, product removal or enzyme concentration.

maximal expiratory flow rate (MEFR)

the slope of the line connecting the points 200 ml and 1200 ml on the forced expiratory volume curve. See also pulmonary function tests. Called also FEF_200-1200.

metabolic rate

an expression of the amount of oxygen consumed by the body cells.

morbidity rate

the number of cases of a given disease occurring in a specified period per unit of population.

mortality rate

death rate; the mortality rate of a disease is the ratio of the number of deaths from a given disease to the total number of cases of that disease.

reactor rate

percentage of reactors in a tested population.

respiration rate

the number of movements of the chest wall per unit of time, indicative of inspiration and expiration.

response rate

see response.

risk rate

see relative risk.

sedimentation rate

the rate at which a sediment is deposited in a given volume of solution, especially when subjected to the action of a centrifuge. See also sedimentation rate.

specific rate

expresses the frequency of a characteristic per unit of the population.

rate standardization

adaptation of a rate so that the conditions under which it occurred are comparable with those in which other rates have been estimated. There are several methods, e.g. the equivalent average death rate.

---

rate

The number of events divided by the period of time over which they occur. See Average payment rate, Basal metabolic rate, Basic pacing rate, Baud rate, Case rate, Composite rate, Erythrocyte sedimentation rate, False negative rate, False positive rate, Fetal heart rate, Glomerular filtration rate, Graft survival rate, Growth rate, Heart rate, Instantaneous rate, Minute volume & respiration rate, Platelet production rate, Pulse rate, Respiratory rate, Secondary attack rate, Sedimentation rate, Slew rate, Success rate, Urinary flow rate, Upper rate Epidemiology An expression of the frequency with which an event–eg, disease or death–occurs in a defined population. See Adjusted community death rate, Age-adjusted death rate, Age/sex rate, Basic reproduction rate, Birth rate, Cause-fatality rate, Cause-specific mortality rate, Crude birth rate, Crude death rate, Crude mortality rate, Death rate, Fertility rate, Fetal mortality rate, Hospital mortality rate, Incidence rate, Infant mortality rate, Maternal mortality rate, Morbidity rate, Mortality rate, Neonatal mortality rate, Postneonatal mortality rate, Prevalence rate, Rate-specific mortality rate, Sex-specific mortality rate, Total fertility rate. Cf Ratio.

---

Patient discussion about rate.

Q. How fast can primary amyloidosis spread? And what is the average survival rate for this disease?

A. Your best bet for one-stop shopping for amyloidosis information on the net is http://www.amyloidosis.org. There is also a Yahoo group named amyloidosis and also a mailing list named amyloid hosted by the Association of Cancer Online Resources. The amyloid list has around 500 subscribers, amyloidosis Yahoo group has maybe half that many. Face-to-face support for patients and caregivers is also available in most large metropolitan areas two or three times a year. See http://www.amyloidosissupportgroups.com for details.

To join the amyloid list, see http://www.acor.org/amyloid.html

Q. What is the rate of alcoholism in the USA compared to the rest of the world? What is the rate of alcoholism in the USA compared to other countries in the world. I don't mean amount of alcohol consumed, but alcohol addiction/dependency. Links to your sources would be appreciated. Cheers! (pun intended)

A. here is a link to a CDC table about drinking hobbits of Americans:
http://www.cdc.gov/nchs/data/hus/hus07.pdf#068
here is an article about it, and it gives good links also:
http://www.articlesbase.com/self-help-articles/alcoholism-statistics-enlightening-experience-for-everyone-540401.html

Q. I was wondering the rate at which alcohol induces brain damage. I am not an alcoholic and I use to drink only on weekends. I was wondering the rate at which alcohol induces brain damage; I know that over some years, damage occurs, but does anything happen after a month of drinking on weekends?

A. HI WAYLON;just want to add my two cents here,EVERYTIME YOU TAKE A DRINK IT KILLS BRAIN CELL,I CANT TILL YOU HOW MANY---mrfoot56

Read more or ask a question about rate