Data Source

Survey

Type of Study

Longitude survey: long-term study of the same sample

Data gathering method

CAWI

Ease

NBTC-NIPO Research

Conditions of access

Formal agreements (e.g. fees, research contracts, institutional agreements, etc.)

Contact data administrator (see contact information)

Time elapsed between application and reception of data

Months

Type of available data (e.g. anonymised microdata, aggregated tables, etc.)

Anonymised microdata

Formats available

SPSS (default)

Language issues

Contact data administrator (see contact information)

Years of collection, reference years, and sample sizes

Data was collected between 1990 and 2012. Data collection is ongoing and is scheduled to continue at some point in the future. Until 2002, the total sample size used was of around 3,000 individuals. From 2002 onwards, it was increased to 6,500 individuals.

First year of collection

1990

Stratification if applicable

Random sample

Base used for sampling

TNS NIPO-base

Geographical coverage and breakdowns

Population with Dutch nationality in non-institutional households

Age range

No age restrictions

Statistical representativeness

Representative of the population with Dutch nationality.

Coverage of main and cross-cutting topics

Brief overview of: Holidays; destination, duration, expenses, mode of transportation, type of accommodation.

Possibility of linkage among databases

Linkable to other person databases through anonymised personal number

Entry errors if applicable

Survey errors. Data are checked and corrected for internal inconsistencies. Some of the missing data are imputed.

Breaks

Methodological improvements introduced in 2002.

Consistency of terminology or coding used during collection

Consistent method

Strengths: The survey provides long time series and coherent data. The observations are also equally spread over the year. Weaknesses: None