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National reference metadata

Romania

Reference metadata describe statistical concepts and methodologies used for the collection and generation of data. They provide information on data quality and, since they are strongly content-oriented, assist users in interpreting the data. Reference metadata, unlike structural metadata, can be decoupled from the data.

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Employment and unemployment (Labour force survey) (employ)

National Reference Metadata in ESS Standard for Quality Reports Structure (ESQRS)

Compiling agency: National Institut of Statistics

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Short metadata
Full metadata
Coverage   
Coverage Household concept Definition of household for the LFS Inclusion/exclusion criteria for members of the household Questions relating to employment status are put to all persons aged ...
 Ussualy resident population in private households in Romania  Housekeeping concept Persons living regularly together in the same dwelling and sharing income, household expenditures, food and other essentials for living. A person who lives alone or occupies a separate room in a dwelling (eg tenant) but who declares that he or she does not join with any of the other occupants of the housing unit to form part of a multi-person household is considered to be a single-person household.

 Are considered memebers of the household those persons who:

- are usually resident at the address

- provide themselves with food and other essentials for living

- are sharing income or household expenses 

 15-89 years

 

Population concept  Specific population subgroups
Primary/secondary students Tertiary students People working out of family home for an extended period for the purpose of work People working away from family home but returning for weekends Children alternating two places of residence
 Usualy resident population  Family home  Term address (if they live in a private household; otherwise - familly home) The dwelling where they spend most of the time   Family home  The place where the child is found during the reference week 

 

Reference week
Fixed week (data collection refers to one reference week, to which the observation unit has been assigned prior to the fieldwork) Rolling week (data collection always refers to the week before the interview)                                  
 Y  N

 

Participation is voluntary/compulsory?
 Voluntary
Not Applicable

Not requested for the LFS quality report.

Not requested for the LFS quality report.

Not requested for the LFS quality report.

Not requested for the LFS quality report.

Not Applicable

Not requested for the LFS quality report.

Not Applicable

Not requested for the LFS quality report.

Sampling design & procedure
Sampling design (scheme; simple random sample, two stage stratified sample, etc.) Base used for the sample (sampling frame)  Last update of the sampling frame (continuously updated or date of the last update) Primary sampling unit (PSU)   Final sampling unit (FSU) Date of sample selection
 The sampling plan is a two-stage stratified sample.  Because of the lack of appropriate registers (dwelling register, population register etc), the household surveys carried out by NSI-Romania are based on the repeated use of a master sample, which involves further the use of multi-stage sampling design.  After Census 2011  The primary sampling unit, corresponding to the selection of the master sample, is a group of census section  The secondary (ultimate) sampling unit, corresponding to the selection of the survey sample, is the dwelling. 2020

 

Sampling design & procedure
First (and intermediate) stage sampling method   Final stage sampling method Stratification (variable used) Number of strata (if strata change quarterly, refer to Q4). Rotation scheme (2-2-2, 5, 6, etc.)
 In the first stage, a stratified random sample of 792 areas, Primary Sampling Units (PSUs), was designed after the 2011 Census, This is the Multifunctional Sample of Territorial Areas, so called the master sample.
EMZOT. The EMZOT sample has 450 PSUs selected from urban area and 342 PSUs selected from rural area.
 In the second stage, the dwellings are systematically selected from the initial sample of PSUs. The final quarterly  sample consists of 28512 dwellings units. All households within each dwelling are included.
 
 Stratification concerns only the first stage, using as stratification criteria the residence area(urban/rural) and county (NUTS3- level).  There are 88 strata.  Each sampling unit is observed for four quarters according to the rotation pattern 2-(2)-2.

 

Yearly sample size & Sampling rate
Overall theoretical yearly sampling rate Size of the theoretical yearly sample
(i.e. including non-response) (i.e. including non-response)
The overall sampling rate, estimated as ratio between number of sampled dwellings, after the two sampling stages, and number of dwelling  at country level, is about 1.51 %.

 

 The size of the theoretical yearly sample is 114.048 dwellings.

  

Quarterly sample size & Sampling rate

Overall theoretical quarterly sampling rate

Size of the theoretical quarterly sample

(i.e. including non-response)

(i.e. including non-response)

 0.38%   ≈ 28512 dwellings

 

Use of subsamples to survey structural variables (wave approach)
Only for countries using a subsample for yearly variables
Wave(s) for the subsample  Are the 30 totals for ILO labour status (employment, unemployment and inactivity) by sex (males and females) and age groups (15-24, 25-34, 35-44, 45-54, 55+) between the annual average of quarterly estimates and the yearly estimates from the subsample all consistent? (Ref.: Commission Reg. 2019/2240) (Y/N) If not please list deviations List of yearly variables for which the wave approach is used (Ref.: Commission Reg. 2019/2240, Annex I)
Wave approach is not used for yearly nor biannually variables. Only 8-year variables are collected on a subsample that consist of wave 2 in each quarter.  NA  NA  NA

 

 

Brief description of the method of calculating the quarterly core weights Is the sample population in private households expanded to the reference population in private households? (Y/N) If No, please explain which population is used as reference population Gender is used in weighting (Y/N) Which age groups are used in the weighting (e.g., 0-14, 15-19, ..., 70-74, 75+)? Which regional breakdown is used in the weighting (e.g. NUTS 3)? Other weighting dimensions
 The weights are calculated in three steps. The first step assigns the inverse of the selection probabilities to each sampled dwelling unit. The second step adjusts for non-response, categorising the responding dwelling units by the following characteristics: county (NUTS 3) and urban/rural residency. The third and final steps consists of calibrating the secondary weights to the best latest available population totals by region / urban-rural residency, gender, 14 age groups and the  households totals by region, using the  SAS macro Calmar  NA  Y 00-14, 15-19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75 and over for all the regions, except Bucuresti-Ilfov,where we used more aggregated age groups (0-14, 15-44, 45-64, 65 and over)  NUTS2   Residential area  (urban/rural)

 

Brief description of the method of calculating the yearly weights (please indicate if subsampling is applied to survey yearly variables) Gender is used in weighting (Y/N) Which age groups are used in the weighting (e.g., 0-14, 15-19, ..., 70-74, 75+)? Which regional breakdown is used in the weighting (e.g. NUTS 3)? Other weighting dimensions
 Average of the quarterly core weights.  NA  NA  NA  NA

 

Brief description of the method of calculating the weights for households External reference for number of households etc.? Which factors at household level are used in the weighting (number of households, household size, household composition, etc.) Which factors at individual level are used in the weighting (gender, age, regional breakdown etc.) Identical household weights for all household members? (Y/N)
 See description for quarterly core weights  Y  Number of households, household size  Gender, 5 years age groups (0-14, 15-19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75 years old), area of residence (urban/rural), regional(NUTS2-level) breakdown  Y
Not Applicable
Restricted from publication

Divergence of national concepts from European concepts

(European concept or National proxy concept used) List all concepts where any divergences can be found

   
Is there a divergence between the national and European concepts for the following characteristics? (Y/N) Give a description of difference and provide an assessment of the impact of the divergence on the statistics
Definition of resident population (*)  N  NA
Identification of the main job (*)  N  NA
Employment  N  NA
Unemployment  N  NA
Changes at CONCEPT level introduced during the reference year and affecting comparability with previous reference periods (including breaks in series)
Changes in (Y/N) Description of the impact of the changes Statistics also revised backwards (if Y: year / N) Variables affected Break in series to be flagged (if Y: year and quarter/N)  
concepts and definition  N  NA  NA  NA  NA
coverage (i.e. target population)  N  NA  NA  NA  NA
legislation  N  NA  NA  NA  NA
classifications  N  NA  NA  NA  NA
           

 

Changes at MEASUREMENT level introduced during the reference year and affecting comparability with previous reference periods (including breaks in series)
Changes to (Y/N) Description of the impact of the changes Statistics also revised backwards (if Y: year / N) Variables affected Break in series to be flagged (if Y: year and quarter/N)
sampling frame  N  NA   NA   NA   NA
sample design  N   NA   NA   NA   NA
rotation pattern  N  NA   NA   NA   NA
questionnaire  N   NA   NA   NA   NA
instruction to interviewers  N   NA   NA   NA   NA
survey mode  N   NA   NA   NA   NA
weighting scheme  N   NA   NA   NA   NA
use of auxiliary information  N   NA   NA   NA   NA