1. For further information about the data, including updates or changes, see the Explanatory Notes section of this issue and the related Appendices such as Data Quality Issues.
2. Short-term arrival movements are based on a sample and are subject to sampling error. See paragraphs 10 and 11 of the Explanatory Notes section of this issue.
3. Occasionally situations occur that necessitate breaks being applied to the trend series. For an overview of the breaks currently included in the trend series, see paragraph 29 of the Explanatory Notes section of this issue.
4. In July 2017, the Australian Government Department of Home Affairs introduced changes to the incoming passenger card. The changes were to capture the main reason for journey for both residents returning, and visitors arriving in Australia. The ABS has noted changes in the distribution of responses to the question on main reason for journey for short-term visitor arrivals in recent months, notably an increase in the number of persons reporting that the main reason for travel was visiting friends and relatives and a decline in the number of persons reporting the main reason was a holiday. Investigations by Home Affairs have resulted in changes to the process of coding main reason for journey from the new incoming passenger card. To further assist in improving quality, the imputation for main reason for journey was also reviewed and improved by the ABS.