Statistical processing

Source data

The statistics is based on reports from all Danish institutions approved to offer PhD-educations. The data collection covers the total population.

Frequency of data collection

Data is collected yearly.

Data collection

Data is collected yearly from education institutions approved to offer PhD-educations and Statistics Denmark receives data in excel-format. From the 2013-statistics an increasing number of the respondents have used a system-to-system-format.

Data validation

The reported data is examined carefully. The examination is concentrated on missing data for each respondent. It is also checked if consistent information are reported for each student. Data reported from a university is furthermore compared to data for previous time periods at the University and also compared to data for other universities in the same main field and in the current reference period. Furthermore, invalid civil registration numbers are corrected.

In case of missing data or unexpected trends the respondent is contacted for verification of the reported data.

Data compilation

The reported data is examined carefully. The examination is concentrated on missing data for each respondent. It is also checked if the reported information are consistent for each student and if the required specification are met. Among other things, it is checked if the dates in the PhD-education are in the correct order, whether or not the informed scheme and the student's qualifications are in line with each other and whether industrial PhD students have an external supervisor assigned.

Adjustment

For people who have more than one PhD-education, the educations cannot overlap and it is corrected in case they do.