SP2: Survey on the number of pigs (May/June sample survey) (RS)

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

Compiling agency: Statistical Office of the Republic of Serbia (SORS)


Eurostat metadata
Reference metadata
1. Contact
2. Statistical presentation
3. Statistical processing
4. Quality management
5. Relevance
6. Accuracy and reliability
7. Timeliness and punctuality
8. Coherence and comparability
9. Accessibility and clarity
10. Cost and Burden
11. Confidentiality
12. Comment
Related Metadata
Annexes (including footnotes)
 



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1. Contact Top
1.1. Contact organisation

Statistical Office of the Republic of Serbia (SORS)
1.2. Contact organisation unit

Agriculture and Forestry Division - Unit for livestock and fishery statistics
1.5. Contact mail address

5 Milana Rakica, Belgrade


2. Statistical presentation Top
2.1. Data description

The livestock and meat statistics are collected under Regulation (EC) No 1165/2008 since 2009. They cover slaughtering in slaughterhouses (monthly) and other slaughtering (annual), GIP (gross indigenous production) forecast (semi-annual or quarterly data), and livestock statistics (once or twice a year), including regional statistics (annual).This template lists the questions constituting the quality report required in Article 17 of EU Regulation N°1165/2008 on livestock and meat statistics. 

Although the number of pigs in the Republic of Serbia is no longer 3 million or more, SORS continued to provide number of pigs in a semi-annual periodicity by conducting the May/June Survey on the number of pigs as on 23 May, as well as forecast of GIP of pig meat based on these results. This quality report covers the year 2019 and all the quality indicators already reported for year 2016 on the statistical processes used to meet the Regulation (EC) No 1165/2008. The deadline for submission is on 1 July 2020.

 
2.2. Classification system

Not requested for reference year 2019.

 
2.3. Coverage - sector

Not requested for reference year 2019.

 
2.4. Statistical concepts and definitions

Not requested for reference year 2019.

 
2.5. Statistical unit

Not requested for reference year 2019.

 
2.6. Statistical population

Not requested for reference year 2019.

 
2.7. Reference area

Not requested for reference year 2019.

 
2.8. Coverage - Time

Not requested for reference year 2019.

 
2.9. Base period

Not applicable.

 


3. Statistical processing Top
3.1. Source data

See item 3.1.1. and 3.1.2.

 
3.1.1. Labelling of the statistical processes

Identification of the process used to meet regulation EC N°1165/2008

Label SPx (x=1,2,3,4,5,6,7)

Short description of process identified

 

                                                         SP2

  Survey on the number of pigs (May/June sample survey)

 

 
3.1.2. Data Sources for the defined process

Data sources used to meet Regulation (EC) No 1165/2008 for the defined process in 3.1.1.

A. Main source
List of statistical units, frequency of revision (decimal years): 

1.0
Institution in charge of data collection NSI = National Statistical Institute
First year of data availability by (current) source

2014
Type of source Ad hoc survey-Phone
If Administrative source, please specify
If Other source, please specify
Does this main source cover All the respondents (sample)
If the main source is a source other than a statistical survey, please attach a short description of the source
B. Additional source of information
Additional source of information
Institution in charge of data collection
First year of data availability by source
C. Additional comments
Livestock
Slaughtering
3.2. Frequency of data collection

Annually
3.3. Data collection

Survey on the number of pigs is conducted from 24 May to 7 June, by interview method, by telephone (CATI method). Implemeted sample size is around 1% of agricultural holdings. IST program (developed in SORS) was applied for data entry and data processing. Data processing is carried out by the end of June, when the data are published for national needs. Data on number of pigs as well as forecast of GIP of pig meat are transmitted to the Eurostat usually before the deadline (before September).
3.4. Data validation

Not requested for reference year 2019.

 
3.5. Data compilation

Not requested for reference year 2019.

 
3.6. Adjustment

Not requested for reference year 2019.

 


4. Quality management Top
4.1. Quality assurance

Not requested for reference year 2019.

 
4.2. Quality management - assessment

Not requested for reference year 2019.

 


5. Relevance Top
5.1. Relevance - User Needs

Users of these data are MoA and other institutions, journalists, students  and other individuals.

During defining the content of the questionnaire, MoA representatives were consulted and the EU legislation was examined in order to obtain data that would meet national and international  needs. The only problem is that these data are representative and available up to the regional level (NUTS2) and some users need the data for lower territorial levels, which can only be met through structural surveys.
5.2. Relevance - User Satisfaction

General Survey on user satisfaction is conducted every two years and results are available on the web site of SORS. There is no specific survey on user satisfaction related to statistics on livestock number and meat.
5.3. Completeness

Not requested for reference year 2019.

 
5.3.1. Data completeness - rate

Not requested for reference year 2019.

 


6. Accuracy and reliability Top

See the items 6.2., 6.3., 6.5. and 6.6.

 
6.1. Accuracy - overall

Data on statistics on livestock number and meat are collected in accordance with the provisions of Regulation (EC) No.1165. CV achieved for the total number of pigs is 3.18% and for sows 3.09%. Accuracy of data can be assessed as good.

 For calculating estimates and standard errors Swedish ETOS based on software SAS was used.

 

 
6.2. Sampling error

See the item 6.2.1.1.

 
6.2.1. Sampling error - indicators

See the item 6.2.1.1.

 
6.2.1.1. Sample design

Sample design to be reported for the process reported in item 3.1.1.

Questionnaire
Random sampling
Multi-stage sample
Clustered sample
Stratified sample
Stratification criteria
Location
Size of unit (animals/production level)
Legal status of unit
Specialisation (farm type/species slaughtered)
Total number of strata

45


Are some strata surveyed exhaustively? (Exhaustive strata)

% of units in exhaustive strata

In the sample - 34.85%. In the frame - 0.62%.
% of animals/meat produced

In the sample - 91.68%. In the frame - 14.04%.
Allocation method Neyman
6.3. Non-sampling error

See the items 6.3.1, 6.3.2, 6.3.3 and 6.3.4

 
6.3.1. Coverage error

See item 6.3.1.3

 
6.3.1.1. Over-coverage - rate

See item 6.3.1.3

 
6.3.1.2. Common units - proportion

Not requested for reference year 2019.

 
6.3.1.3. Coverage error for each process

Coverage error to be reported for the process reported in item 3.1.1.

Questionnaire:

Geographical coverage
All separate territories and only them 1
Threshold or other conditions
Small farms/slaughterhouses
Farms/slaughterhouses which have just started/ceased
Empty farms/buildings 2
Farms without milk quotas
Emergency slaughtering
Non-agricultural units are excluded (e.g. slaughterhouses or animal traders)
A2: Rate of over coverage (%)
The rate of over coverage is the proportion of units accessible in the frame that do not belong to the target population (i.e. are ‘out of scope’).

12.00%
Further comments

Since 1999 SORS does not answer for the specific data for AP Kosovo and Metohija and these data are not included in the coverage for the Republic of Serbia- total.

As Survey on the number of pigs is telephone survey there is no information if agricultural holding ceased to exist, which can have significant impact on coverage error.

1 Some countries may cover or exclude some specific territories, either remote or kept out of some studies because of their status, for instance French overseas "departments", neighbour micro-states, Mount Athos, etc.
2 On the date of the survey, some farms or holding can be provisionally empty, for instance for sanitary emptying, whereas they have normally an activity and take part to the frame.
6.3.2. Measurement error

See the item 6.3.2.1.

 
6.3.2.1. Survey questionnaire

Survey questionnaire for the process reported in item 3.1.1

Number of surveys already performed with the current questionnaire (or a slightly amended version of it)

6
Interviewers having already performed the same survey: is there a stable group of interviewers? As far as possible
Handbook for surveyors/explanatory notes: Year

2018
Hot-line support for surveyors/respondents?
On-line FAQ for surveyors/respondents?
Number of units participating in field testing (If relevant)

Not relevant
Average/normal number of days’ training for new interviewers

One day
Questionnaire based on usual concepts for respondents
Cross-check of results
Pre-filled questionnaires
6.3.3. Non response error

See items 6.3.3.1, 6.3.3.2, 6.3.3.3 and 6.3.3.4

 
6.3.3.1. Unit non-response - rate

See item 6.3.3.1.1.

 
6.3.3.1.1. Unit non-response – rate by process

Non-response error for the process reported in item 3.1.1.

A4. Unit response rate in % 

79%
Whatever this rate is, do you need to improve it?

Yes
Treatment of non-response: Re-calibration
6.3.3.2. Item non-response - rate

See item 6.3.3.2.1.

 
6.3.3.2.1. Item non-response – rate by process

Non-response for the process reported in item 3.1.1.

A5. Item response rate in % 

Not available
Whatever this rate is, do you need to improve it?

No
Treatment of non-response:
6.3.3.3. Unit non-response analysis

Unit non-response analysis for the process reported in item 3.1.1.

 Have the non-responses been analysed yet? No
 Risk of bias due to non-response Unknown
 Further explanations/comments

No comments
6.3.3.4. Imputation procedure

Imputation procedure for the process reported in item 3.1.

Imputation, based on
Other
Imputation is not used
A6. Imputation rate (%)   
6.3.4. Processing error

See items 6.3.4.2., 6.3.4.3. and 6.3.4.4.

 
6.3.4.1. Imputation - rate

Not requested for reference year 2019

 
6.3.4.2. Internal processing error
Not possible
6.3.4.3. Transmission processing errors

Transmission processing errors -Use of EDAMIS Webforms

 In the department responsible for animal production statistics
 At the central level of the organisation (in charge of livestock and meat statistics) in a specialised department responsible for data transmission
 At central NSI level (if different from the organisation)
6.3.4.4. Control procedure- processing errors

Under this item a "control set" is understood as a sequence of checks conducted by the same stakeholder/service at a given stage. Whether the sequence is interrupted has no impact if the data are not used or disseminated meanwhile.

Interactive on the interview/electronic form
Number of controls sets from field work to transmission to Eurostat

There are four controls sets up to transmission to Eurostat: during interview (by interviewer), during data entry (by interviewer), further control according to the defined criteria of logical and computational control (by SORS), after cros - validation (by SORS).
Cross-validation against Previous survey
Sample Survey for control
6.3.5. Model assumption error

Not requested for reference year 2019.

 
6.4. Seasonal adjustment

Not requested for reference year 2019.

 
6.5. Data revision - policy

See item 6.5.1.

 
6.5.1. Data revision for each process

Data revision for the process reported in item 3.1.1.

Revision policy
The data are subject to revision
Update of Eurostat data is covered
Number of revisions for previous reference year

Data revision was not applied in 2019.
The time series are revised after census results
The statistics previously published are revised after a census (rebasing)
A8: Average size of revisions
The average, over a period, of the revisions of a key indicator 

Not relevant
6.6. Data revision - practice

Not requested for reference year 2019.

 
6.6.1. Data revision - average size

Not requested for reference year 2019.

 


7. Timeliness and punctuality Top
7.1. Timeliness

See the items 7.1.1. and 7.1.2.

 
7.1.1. Time lag - first result

See item 7.1.1.1.

 
7.1.1.1. Time lag - first result for each process

Time lag - first result for the process reported in item 3.1.1.

Time lag between the end of the reference period and date of first/preliminary results/statistics (days)

Not relevant. Obtained results are final.
No preliminary results published
7.1.2. Time lag - final result

See item 7.1.2.1.

 
7.1.2.1. Time lag - final result for each process

38 days
7.2. Punctuality

See item 7.2.1.1.

 
7.2.1. Punctuality - delivery and publication

See item 7.2.1.1.

 
7.2.1.1. Punctuality - delivery and publication for each process

Availability of data to national users for the process reported in item 3.1.1.

In comparison with transmission to Eurostat, the statistical results are usually available to the national users: More than three days earlier
The national legislation sets an earlier deadline than the EU legislation


8. Coherence and comparability Top
8.1. Comparability - geographical

Data are comparable
8.1.1. Asymmetry for mirror flow statistics - coefficient

Not requested for reference year 2019.

 
8.2. Comparability - over time

See item 8.2.2.

 
8.2.1. Length of comparable time series

Not requested for reference year 2019. 

 
8.2.2. Reasons for non-comparability
8.3. Coherence - cross domain

See item 8.3.1.

 
8.3.1. Coherence between selected statistical domains and livestock and meat statistics

Coherence between selected statistical domains and livestock and meat statistics for the process reported in item 3.1.1. Choose the concepts which are the same in livestock and meat statistics and in the following other domains:

National accounts (Including Economic Accounts for Agriculture) statistical units
Farm structure survey statistical units
Administrative source statistical units
Foreign trade coverage
Prices coverage of agricultural products coverage
Further explanations

Statistical data within the data set are consistent.
8.4. Coherence - sub annual and annual statistics

Not requested for reference year 2019.

 
8.5. Coherence - National Accounts

Not requested for reference year 2019.

 
8.6. Coherence - internal

See item 8.6.1.

 
8.6.1. Coherence – between concepts

Coherence between concepts for national livestock and meat statistics and those in Regulation 1165/2008 for the process reported in item 3.1.1.

Population (statistical units) Same
Population (coverage) Same
Reference period Same
Classification Same
Geographical coverage Same
Further explanations


9. Accessibility and clarity Top
9.1. Dissemination format - News release

Not requested for reference year 2019.

 
9.2. Dissemination format - Publications

See item 9.2.1.

 
9.2.1. Dissemination format – Publications by process

Dissemination via publications for the process reported in item 3.1.1.

Dissemination via publications on: General statistics
Press release
Specific analyses/specialised papers
9.3. Dissemination format - online database

See item 9.3.1.

 
9.3.1. Data tables - consultations

See item 9.3.1.1.

 
9.3.1.1. Public access to data for each process

Public access to the data for the process reported in item 3.1.1.

On-line dissemination: Public access to the data Main results
Website giving access to the data

The published data regarding number of pigs as on 23 May on the SORS website can be accessed through the following links:

 https://www.stat.gov.rs/en-us/oblasti/poljoprivreda-sumarstvo-i-ribarstvo/stocarstvo-dodatne-tabele/

 
9.4. Dissemination format - microdata access

See item 9.4.1.

 
9.4.1. Access to confidential data by process

Access to confidential data (if relevant) for researchers
9.5. Dissemination format - other

See item 9.5.1 

 
9.5.1. Publications available in English for each process

Publications available in English for the process

Publications available in English
If yes, specify links to the publications: 
9.6. Documentation on methodology

Extract of the methodology as well as document Animal Production Statistics - National Methodological Report, 2019 (only Serbian version) are published on SORS websait:

https://www.stat.gov.rs/en-US/istrazivanja/methodology-and-documents/?a=13&s=1302

The content of the questionnaire can also be accessed through the same link.
9.7. Quality management - documentation

See item 9.7.2.

 
9.7.1. Metadata completeness - rate

Not requested for reference year 2019.

 
9.7.2. Metadata - consultations

See item 9.7.2.1.

 
9.7.2.1. Available metadata for each process

Available metadata for the process reported in item 3.1.1.

National methodology report - national standard Electronic information
National methodology report - EU standard Not available
Reference metadata (Recommendation 2009/498/EC) Electronic information
Definitions Electronic information
Classifications Electronic information
Quality report Electronic information


10. Cost and Burden Top

The funds for conducting survey are provided from the budget of the Republic of Serbia.The total burden of reporting units in the 2019 May/June survey data collection was 23,735 minutes ie. 395 hours.


11. Confidentiality Top
11.1. Confidentiality - policy

See item 11.1.1.

 
11.1.1. Confidentiality policy for each process
Never
11.2. Confidentiality - data treatment

See item 11.2.1.

 
11.2.1. Criteria for treatment of confidentiality for each process

Criteria for treatment of confidentiality for the process reported in item 3.1.1. (the following answers will be treated as confidential)

Results are published subject to the following rules:
Minimum number of statistical units

If the number of reporting units is 3 or less, the data is considered confidential. 
Maximum weight of the only dominant record11 (%)
Maximum weight of the two dominant records11(%)
11 Dominance thresholds: please fill in only the relevant percentage. The non-relevant cells should be left empty.
11.2.2. Indirect Identification
Another method is applied
11.2.3. Indirect Identification comments

Individual data are published only in aggregated form.


12. Comment Top

No comment


Related metadata Top


Annexes Top