IREF348452false2024-03-28T14:07:25ZCode list for concept "Frequency"This code list provides a set of values indicating the
"frequency" of the data (e.g. weekly, monthly, quarterly). The concept "frequency" may
refer to various stages in the production process, e.g. data collection or data
dissemination. For example, a time series could be disseminated at annual frequency but
the underlying data are compiled monthly. The code list is applicable for all different
uses of "frequency".AnnualTo be used for data collected or disseminated every
yearBiennialTo be used for data collected or disseminated every two
yearsTriennialTo be used for data collected or disseminated every
three yearsQuadrennialTo be used for data collected or disseminated every four
yearsQuinquennialTo be used for data collected or disseminated every five
yearsDecennialTo be used for data collected or disseminated every ten
yearsBidecennialTo be used for data collected or disseminated every
twenty yearsTridecennialTo be used for data collected or disseminated every
thirty yearsThree times a yearTo be used for data collected or disseminated three
times a yearHalf-yearly, semesterTo be used for data collected or disseminated every
semesterQuarterlyTo be used for data collected or disseminated every
quarterMonthlyTo be used for data collected or disseminated every
monthBimonthlyTo be used for data collected or disseminated every two
monthsSemimonthlyTo be used for data collected or disseminated twice a
monthThree times a monthTo be used for data collected or disseminated three
times a monthWeeklyTo be used for data collected or disseminated every
weekBiweeklyTo be used for data collected or disseminated every two
weeksTriweeklyTo be used for data collected or disseminated every
three weeksFour-weeklyTo be used for data collected or disseminated every four
weeksSemiweeklyTo be used for data collected or disseminated twice a
weekThree times a weekTo be used for data collected or disseminated three
times a weekDailyTo be used for data collected or disseminated every
dayTwice a dayTo be used for data collected or disseminated twice a
dayHourlyTo be used for data collected or disseminated every
hourBihourlyTo be used for data collected or disseminated every two
hoursTrihourlyTo be used for data collected or disseminated every
three hoursDaily – business weekSimilar to "daily", however there are no observations
for Saturdays and Sundays (so, neither “missing values” nor “numeric values” should be
provided for Saturday and Sunday)MinutelyWhile N denotes "minutely", usually, there may be no
observations every minute (for several series the frequency is usually "irregular"
within a day/days). And though observations may be sparse (not collected or disseminated
every minute), missing values do not need to be given for the minutes when no
observations exist: in any case the time stamp determines when an observation is
observedIrregularTo be used with irregular time series that stores data
for a sequence of arbitrary timepoints. Irregular time series are appropriate when the
data arrives unpredictably, such as when the application records every stock trade or
when random events are recorded (the interval between each element can be a different
length)Occasional annualThe event occurs occasionally with an infrequent update
that could span from 1 year to several years between events. It implies a survey that
experiences a gap for several years prior to the next survey update (this is commonly
linked to funding available to run a specific survey (i.e. health surveys), whereas a
regular annual survey refers typically to ‘programs’ that are funded regularly and fall
under the Statistics Act, and therefore never experience a gap)Occasional monthlyThe event occurs occasionally with an infrequent update
that could span from 1 month to several months between events. It implies a survey that
experiences a gap for several months prior to the next survey
updateOtherTo be used when the qualitative or quantitative values
that a variable takes in a data set is associated to multiple occurrences with frequency
other than the already defined ones (for example every 5 hours and 32 minutes
etc.)UnspecifiedTo be used when a set of values are reported within a
time range but not associated to sub ranges. Often this could happen in case of missing
or sparse information. (Let’s say we have two observations for 2020 but we do not know
if they are part of a monthly reporting or quarterly reporting)Not applicableTo be used when the qualitative or quantitative values
that a variable takes in a data set is not associated to multiple occurrences (only
single occurrence exists) one can use the _Z as frequency