Victorian Child and Adolescent Monitoring System - This data is collected as part of the Victorian Child Health and Wellbeing Survey (VCHWS) by DET.
These data are collected from a sample of parents of children aged 0 to 12 years via telephone interview. In 2013, the sample was 7000 households. Data are weighted against population benchmarks to provide state estimates.
For further information on the VCHWS, see
http://www.education.vic.gov.au/about/research/pages/newdata.aspx
The Australian Bureau of Statistics (ABS) defines Standard Error (SE) as a measure of the variation between any estimated population value that is based on a sample rather than the true value for the population. The Relative Standard Error (RSE) is the standard error expressed as a fraction of the estimated value and is usually displayed as a percentage.
Relative standard errors of 25% to 50% should be used with caution. Relative standard errors greater than 50% are considered too unreliable for general use.