There are additional variables before (left) and after (right) of your question's variables. This chapter will shortly describe their meanings.
Note: Some variables must explicitly be enabled before starting the download.
Note: For privacy reasons, recording data from the user's browser (browser, referer, IP address, etc.) needs to be to activated before collecting data.
caseNumber()
).caseSerial()
).reference()
).panelData()
.These variables are placed at the data set's end.
goToPage()
.TIME001
etc. store the time (in seconds) that a participant stayed on a questionnaire page. If the participant visits the page multiple times (e.g., using the back button) these times are summed up. Generally, dwell times are rather imprecise, because they contain loading times.
Note: The parameters TIME_SUM
and TIME_RSI
only contain a value if the downloaded data set contains at least 10 records for the respective questionnaire (selection_criteria_filter). The more records the download contains, the more accurate the values for TIME_SUM
and TIME_RSI
will be, because the distribution of response times in the sample is used to clean outliers or to normalize them.
Note: The response times are only included in the data set if the option to download the dwell times has been checked the variables selection of the download options. This option is checked by default.
Note: Processing times are recorded automatically. To deactivate the recording, please uncheck the option in Survey Project → Project Settings → tab Privacy → record time and duration during the survey.
Data quality in online surveys is usually quite good. Data cleaning, however, is necessary in mostly every survey. When using the option Variables selection → Download data quality parameters SoSci Survey provides variables to support data cleaning:
Whether a questionnaire has been completed in its entirety can be determined using the variables LASTPAGE and FINISHED (see above). MISSREL is a valuable indicator of the participant's diligence and for data records that originate from “just looking at”. The time invested for completion is not a direct indicator of data quality, but very short response times (TIME_SUM and TIME_RSI) indicate that the questions were not even read.