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National reference metadata

Norway

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: Statistics Norway

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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 ...
 Persons in private households    

Households are register based, on these sources

• Familial ties:
o Married persons and partners (with and without children)
o Unmarried persons with children

• Kinship:
o Grandparents and grandchildren
o Multi-generational families
o Siblings

• Cohabitation:
o Addresses with only two inhabitants
o Addresses with two adult inhabitants and children belonging to one of the adults
o Two persons with joint property, debt, or housing cooperative apartments, including children
o Two persons that moved to the address on the same date


Children without either biological parents or grandparents on the same address are considered foster children if the addresses contain only one other family unit. In cases where there are more than one family unit, the children are considered single-person households. However, if the address consists of children only, i.e. persons younger than 18 years old, they are considered ‘unspecified’.
Students that according to the National Population Register are living on the same address as their parents but are registered as ‘living away from home’ in the Student Loan database, are categorized as single-person households.

As of today, there are two household types the register is unable to identify. These are households that consists of three or more single-person families, and households with two or more multi-person families.

Data
Input data used in the register includes

• The National Population Register
• Data of students receiving support from the Norwegian State Educational Loan Fund
• Conscription data
• Kinship data (register derived from the population register)
• Employee data
• Tax returns (to obtain debt data)
• The Cadastre
• The Land Registry

The different registers were joined by national identity number or by address.

Structure
After importing and processing the input data, we improve upon the information we have on addresses. Here, we add housing unit number from the Cadastre to those who lack that number in the National Population Register, or we correct it for those we identify having an invalid one.

Consequently, we arrange the persons registered in each building according to family ties. This is done on the building level and not on the housing unit level because incorrect registrations of housing unit numbers are prevalent, leading, in many cases, to families being registered in different parts of building complexes. We give married persons, partners, and parents with children a family number, in addition to a family type, e.g. ‘spouses with children’. Unmarried, childless persons receive unique family numbers and are considered one-person families.

Then we identify people living in institutions. These includes persons living on addresses with businesses such as prisons, somatic nursing homes, psychiatric nursing homes, retirement homes, and children homes, in addition to people living in buildings that are registered as nursing homes. These are removed from the register since they are not considered private households. Some of the people who live on addresses like those previously mentioned are employees and therefore kept in the household register. As of today, we are only able to identify around 20–30 % of the total amount of non-private households due to lack of data.

Next, we utilize the Land Registry for finding people with shared real estate and shared housing cooperative apartments, respectively.

Then we assemble the households. The previously constructed family household numbers are converted to household numbers, which is the national id of the oldest person in the group. Most of the already identified family households remain as they are through this section. In some cases, one person may be merged with a multi-person family household, e.g. a single parent with children will merge together with a one-person family of opposite gender, if they are the sole inhabitants of an address; however, one-person families are what predominately changes. The code constructing the households loops through each person on an address for each type of household. ‘More secure’ household types (higher probability of being households in actu) are processed earlier. For example, looping through people registered on an address, we look for persons with shared property before we look for identical moving date.

Finally we code the relations between the members of the households to the reference person of the household based on kinship. We also create a new set of categories for different types of households to make the register more easily comparable to the already extant habituation register.

   15-89 years of age

 

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
 Persons in the national population register Included in the household they de jure live in (which for children normally will be with at least one parent)  No special rules. Persons are sampled from their population register address.  No special rules. Persons are sampled from their population register address.   No special rules. Persons are sampled from their population register address.  Population register address

 

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)                                  
 X  

 

Participation is voluntary/compulsory?
 Compulsory
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
One-stage random stratified sampling Population register and household register  Quarterly updated  Person  NA

21.12.2021

22.03.2022

20.06.2021

20.09.2021

 

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.)
 One-stage random stratified sampling    age, region, register labour market status  56  8

 

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)
 1.6 % of the population 15-89 years  84 000 reference persons plus 12 000 household members

  

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)

 0.4 % of population 15-89 years  21 000 reference persons plus 3000 household members

 

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. 430/2005, Annex I) (Y/N) If not please list deviations List of yearly variables for which the wave approach is used (Ref.: Commission Reg. 377/2008, Annex II)
 2 and 6  Yes    All  yearly variables

 

 

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
 A one-step multiple model-calibration method (e.g. Montanari and Ranalli 2009) is used to calculate quarterly individual weights.  There is no additional step to adjust for non-response with one-step approach (Lundström and Särndal 1999). Thus, design weights are directly used as initial weights in the calibration. At first, monthly weights are calculated by applying calibration to data of each month of the quarter of interest, and then quarterly weights are calculated as a weighted average of monthly weights, where the weights are defined as proportional to the number of weeks of the associated month. Model-calibration approach may provide better estimates with higher precision than the usual linear calibration method by enabling to describe the relationship between the output variable and the explanatory variables by a generalized linear model, which also captures linear regression (Wu and Sitter 2001). The probabilities of being employed, unemployed and outside of labour force are predicted via a multinomial logistic regression model, and then these predicted probabilities are used as calibration variables in addition to other auxiliary variables obtained from register data (Oguz-Alper 2018).      Yes     Y 0-14, followed by five year age groups, followed by 75-89. Also 15-17, 18-19, 55-61, 62-66, and 67-74  NUTS2 (6 regions)

- five-year age groups from 15 to 74 cross-classified by gender
- other age groups
- predicted probabilities of being employed, unemployed and outside of labour force by gender and three age groups (15-24, 25-54 and 55-74)
- predicted probabilities of being employed, unemployed and outside of labour force by NUTS 2
- three age groups (15-24, 25-54 and 55-74) by NUTS 2
- gender by NUTS 2
- Register-based employment status (full-time employed, part-time employed, self-employed and others) by gender
- Register-based employment status (employed, not employed) by country of origin (not immigrants, immigrants coming from European Economic Area, USA, New Zealand, Canada and Australia, immigrants coming from other countries, stateless or others)

 

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
 Linear calibration of quarterly weights, as described in Deville, J.-C., og Sarndal, C.-E. (1992): Calibration Estimators in Survey Sampling. Journal of the American Statistical Association, 87(418), 376–382.Doi.org . Implemented by using the calmar sas-macro from INSEE.  Y  25-34, 35-44, 45-54, 15-74  NUTS2  

 

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)
 Integrative calibration is used to calculate the yearly household weights. Household design weights, which are the same for all individuals in the same household, are used as initial weights in the calibration. With integrative calibration, not only both person and household-level calibration conditions are satisfied, but also all eligible individuals in a household take the same household weight.   Private households (cost sharing)  

- number of households by household size groups (1, 2, 3, 4, 5+)
- number of register based jobless households

- gender
- age (0-14, 15-24, 25-34, 35-44, 45-54, 55-64, 65-74, 75+)
- number of children 0-17
- number of adults 18-59 by gender
- number of children 0-17 in register based jobless households
- number of adults 18-59 by gender in register based jobless households
- LFS employment status (employed, unemployed, outside of labour force) by gender
- LFS employment status (employed, unemployed, outside of labour force) by age groups (15-24, 25-34, 45-54)
- LFS employed or not employed by age groups 55-64 and 65-74

 Y

The variables used for stratification are the Districts and the urban/rural areas within each district.

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  
Identification of the main job (*)  
Employment  
Unemployment  
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        
coverage (i.e. target population) N        
legislation N        
classifications N        
geographical boundaries        

 

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        
sample design N        
rotation pattern        
questionnaire N        
instruction to interviewers N        
survey mode        
weighting scheme N        
use of auxiliary information N