|Page tools: Print Page Print All|
8. 'Severity of disability' is an attribute of the counting unit Person.
9. Operationally, 'Severity of disability' is defined as the extent to which a person's activity is limited by a condition lasting or likely to last six months or more. It is obtained by coding of responses to a series of direct questions. In most circumstances the result obtained is dependent on respondent perception of their need for help, and the meanings of 'help', 'supervision', 'difficulty', 'restriction', and 'everyday activity'.
Scope of the variable
10. The variable 'Severity of disability' applies to all Persons.
11. 'Severity of disability' requires the supporting variable 'Age'. This is necessary to sequence persons aged 65 years or more past the final questions of the Disability Module on education and employment difficulties.
DISCUSSION OF CONCEPTUAL ISSUES
12. Extensive ABS testing has shown that disability is a difficult and complex concept to measure, particularly with a short question module. Also, there are quality limitations with any measurement tool and the Disability Module is no exception. The disability population identified via the Disability Module is larger than the population that would be obtained from the same sample using the full SDAC question set because SDAC includes a number of screening questions aimed at eliminating false positive responses. The standard Disability Module is designed to obtain data on the broad characteristics of the disability population in the particular survey in which the module is included, rather than producing the detailed disability data or national prevalence estimates derived from SDAC.
13. There are a number of reasons why data on disability is difficult to collect with a great degree of accuracy. These include:
14. To fully derive 'Severity of disability' the additional variable 'Age' is required. Responses to 'Age' serve as a filter for some individual questions in the standard question module. The method by which 'Severity of disability' uses the variable 'Age' is explained in the Derivation procedures section.
1200.0.55.001 - Disability Variables, 2006
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 03/10/2006 First Issue