Denmark has participated in the WCA since 1930. In the following years, the agricultural surveys were conducted as censuses (on a complete enumeration basis): until 1983, 1985, 1987, 1989, 1999 and 2010. A SAPM was carried out in 2011 to complete the data collected in the 2010 Agricultural Census, AC (or Farm Structure Survey, FSS).
In its present form the agricultural and horticultural survey goes back to 1977 where the separate surveys for agriculture and horticulture were integrated in one survey. Since then the survey has taken place every year as a questionnaire based survey where the farmer has received a questionnaire in a letter with an obligation to complete it. The questionnaire has varied year after year, partly to meet EU requirements, and partly to meet national needs. The questionnaire has thereby never been completely identical two successive years. Furthermore the survey has changed between total censuses and sample surveys:
The following surveys have been total censuses: 1977-83, 1985, 1987, 1989, 1999 and 2010.
The following surveys have been sample surveys: 1984, 1986, 1988, 1990-98, 2000-09 and 2011-12.
The next total census will presumably be held in 2019 or 2020.
Kind of Data
Census/enumeration data [cen]
Unit of Analysis
The census scope covered agricultural (crop and animal production) activities.
Agriculture & Rural Development
The statistical unit is the agricultural holding, defined as a single unit, both technically and economically, which has a single management and which undertakes agricultural activities listed in Annex I to the European Parliament and Council Regulation (EC) No. 1166/2008 within the economic territory of the EU, either as its primary or secondary activity.
Producers and sponsors
Statistics Denmark's Division of Agriculture (SDDA)
a. Methodological modality for conducting the census
The classical approach was used in the AC 2010. Administrative registers were also used as a source of census items.
The frame for the AC 2010 and the SAPM 2011 was Statistics Denmark's Business Register, with all units marked as "active in agriculture" and that met the minimum requirements of the holding.
c. Complete and/or sample enumeration method(s)
The AC was a complete enumeration of all agricultural holdings.
Dates of Data Collection
Data Collection Mode
Data Collection Notes
For the AC and SAPM field data collection, different methods were applied: (i) personalized postal questionnaires (mail-out/mailback method); (ii) Internet-based questionnaires (CAWI method); and (iii) Computer-assisted Telephone Interviewing (CATI). The administrative data were extensively used as a source of census items for the AC 2010.
One questionnaire was used for AC data collection and one for the SAPM. Both paper-based and electronic questionnaires were used for data collection. The census covered all 16 core items recommended in the WCA 2010:
0001 Identification and location of agricultural holding
0002+ Legal status of agricultural holder
0003 Sex of agricultural holder
0004 Age of agricultural holder
0005 Household size
0006 Main purpose of production of the holding
0007 Area of holding according to land use types
0008 Total area of holding
0009 Land tenure types on the holding
0010 Presence of irrigation on the holding
0011 Types of temporary crops on the holding
0012 Types of permanent crops on the holding and whether in compact plantation
0013 Number of animals on the holding for each livestock type
0014 Presence of aquaculture on the holding
0015+ Presence of forest and other wooded land on the holding
0016 Other economic production activities of the holding's enterprise
a. DATA PROCESSING AND ARCHIVING
The majority of paper questionnaires received from the respondents by post were scanned (77 percent); the data from other paper questionnaires (23 percent) were keypunched. Data from the IACS were transferred directly into the statistical database. The questionnaires were registered and also edited in an Oracle database; there were approximately 150 validation rules. All individual information was checked both manually and by means of computer-based validation routines. The imputation was performed using SAS and SQL programming.
b. CENSUS DATA QUALITY
Completion/correction methods were applied, such as follow-up interviews (approximately 5 percent of the farms were contacted once by telephone if important information was missing on the questionnaire). All staff that worked on the AC and SAPM had the authority to correct survey information (for instance after contacting a farmer); however, the imputations, where necessary, were performed only by the survey leader.
The AC 2010 results (including the detailed regional data) were published in May 2011. A database with FSS and SAPM 2010 data is available on the CBS website. The AC 2010 results were published in the Statistical Ten-Year Review 2011 (in August 2011), the Agricultural Statistical Yearbook 2010 (in November 2011) and the Statistical Yearbook 2012 (in April 2012).
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses