Contains travel flows from (and within) residential output areas in Scotland to workplace output areas in the UK.

For residences outside Scotland, the 2001 Special Workplace Statistics (SWS) should be used. The STS and SWS are similar in some ways but have some crucial differences:

• The STS refer to all persons rather than just to employees and self-employed aged 16-74 as is the case with the SWS. These include:
  • Journeys made to schools and other places of education
  • A residual count of persons who neither work nor study
• The count of persons who neither work nor study is found in the intrazonal flow (i.e. where the residence (origin) and workplace (destination) output areas are the same
• In order to make comparisons between the SWS and the STS, the final column relating to 'Other persons' in the STS must be removed from any totals calculated.

Data available

Users can choose from 52 counts in 1 table. This set of 52 counts includes a number of totals and sub-totals; the number of interior cells which form the basis of these sub-totals is 36.

All the 2001 STS data have been derived from the 100% sample and include imputed households. Where workplace locations were unknown, these were also imputed.

Disclosure control

All data have been modifed via a process known as Small Cell Adjustment Methodology (SCAM). SCAM was not applied to STS Levels 1 or 2, (nor was to applied to most other Scottish data in other Census outputs).

The SCAM process is a disclosure control mechanism. For all tables process using SCAM, interior cells with a 'small' value have been adjusted. 'Small' values are understood to be in the range 0-3. Cells with an initial value of 1 have been rounded to either 0 or 3, with 0 being the more likely result. Cells with an initial value of 3 have also been rounded to either 0 or 3, but with 3 being the more likely result. Cells with initial values of either 0 or 3 have retained these values although in each case it is impossible to distinguish between rounded values and 'genuine' 0s or 3s. All sub-totals and totals have been re-calculated from the rounded cells.

Noticeable effects of SCAM

• Within-table modification. For the majority of outputs, it will be apparent that a large proportion of cells within any table are either 0 or 3, and that sub-totals and totals within the table are multiples of 3.

Users are advised to ensure that data they use has been calculated by summing the minimum number of base values.