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2 For all topics, information on labour force characteristics, education, income and other demographics are also available. In addition to these publications, data from the 2010-11 MPHS will be available to be tabulated via Survey TableBuilder (STB) in early 2012.
3 The publication Labour Force, Australia (cat. no. 6202.0) contains information about survey design, sample redesign, scope, coverage and population benchmarks relevant to the monthly LFS, which also apply to the MPHS. It also contains definitions of demographic and labour force characteristics, and information about telephone interviewing which are relevant to both the monthly LFS and the MPHS.
CONCEPTS SOURCES AND METHODS
4 The conceptual framework used in Australia's LFS aligns closely with the standards and guidelines set out in Resolutions of the International Conference of Labour Statisticians. Descriptions of the underlying concepts and structure of Australia's labour force statistics, and the sources and methods used in compiling these estimates, are presented in Labour Statistics: Concepts, Sources and Methods (cat. no. 6102.0.55.001).
5 ABS interviewers conducted personal interviews by either telephone or at selected dwellings during the 2010-11 financial year. Each month a sample of dwellings were selected for the MPHS from the responding households in the LFS. In these dwellings, after the LFS had been fully completed for each person, a usual resident aged 15 years and over was selected at random and asked the additional MPHS questions in a personal interview. Information was collected using Computer Assisted Interviewing (CAI), whereby responses are recorded directly onto an electronic questionnaire in a notebook computer.
6 The scope of the LFS is restricted to people aged 15 years and over and excludes the following people:
7 In addition the 2010-11 MPHS excluded the following:
8 For the Barriers and Incentives to Labour Force Participation topic, the scope was further restricted to people aged 18 years and over.
9 The 2010-11 MPHS was conducted in both urban and rural areas in all states and territories, but excluded people living in very remote parts of Australia. The exclusion of these people will have only a minor impact on any aggregate estimates that are produced for individual states and territories, except for the Northern Territory where such people account for around 23% of the population.
10 In the LFS, coverage rules are applied which aim to ensure that each person is associated with only one dwelling and hence has only one chance of selection in the survey. See Labour Force, Australia (cat. no. 6202.0) for more details.
11 The initial sample for the MPHS 2010-11 consisted of approximately 19,280 private dwelling. Of the 16,376 private dwellings that remained in the survey after sample loss (e.g. households with LFS non-response, no residents in scope for the LFS, vacant or derelict dwellings and dwellings under construction), approximately 80% were fully responding to the MPHS. The number of completed interviews obtained from these private dwellings (after taking into account scope, coverage and subsampling exclusions) was 5,374 for the Barriers and Incentives to Labour Force Participation survey.
12 Weighting is the process of adjusting results from a sample survey to infer results for the total in scope population. To do this, a 'weight' is allocated to each sample unit, which, for the MPHS, can either be a person or a household. The weight is a value which indicates how many population units are represented by the sample unit. The first step in calculating weights for each unit is to assign an initial weight, which is the inverse of the probability of being selected in the survey. The initial weights are then calibrated to align with independent estimates of the population of interest, referred to as 'benchmarks'. Weights are calibrated against population benchmarks to ensure that the survey estimates conform to the independently estimated distribution of the population rather than the distribution within the sample itself.
13 The survey was benchmarked to the estimated civilian population aged 15 years and over living in private dwellings in each state and territory, excluding the scope exclusions listed under Explanatory Notes 6 to 8. For person estimates, the MPHS was benchmarked to the Estimated Resident Population (ERP) in each state and territory, excluding the ERP living in very remote areas of Australia, at 31 March 2011. The MPHS estimates do not (and are not intended to) match estimates for the total Australian person/household populations obtained from other sources (which may include persons living in very remote parts of Australia).
RELIABILITY OF THE ESTIMATES
14 Estimates in this publication are subject to sampling and non-sampling errors:
15 Country of birth data are classified according to the Standard Australian Classification of Countries (SACC), Second Edition, 2008 (cat. no. 1269.0).
16 Occupation data are classified according to the ANZSCO - Australian and New Zealand Standard Classification of Occupations, First Edition, Revision 1, 2009 (cat.no. 1220.0).
17 Industry data are classified according to the Australian and New Zealand Standard Industrial Classification (ANZSIC), 2006 (cat. no. 1292.0).
18 Educational attainment data are classified according to the Australian Standard Classification of Education (ASCED), 2001 (cat. no. 1272.0).
COMPARABILITY WITH MONTHLY LFS STATISTICS
19 Due to difference in the scope and sample size of the MPHS and that of LFS, the estimation procedure may lead to some variations between labour force estimates from this survey and those from LFS. For the 2010-11 Barriers topic, this has impacted on estimates of persons not in the labour force, with these being lower than those from LFS averaged over the 12 month period.
20 The Barriers and Incentives to Labour Force Participation survey was last conducted in the 2008-09 financial year. Results of this survey were published in:
CHANGES IN THIS ISSUE
21 No new content was included in the 2010-11 survey, as it only contained core content. As a result, questions on incentives to join or increase participation in the labour force and self assessed health that were included in the 2008-09 survey, have been excluded.
22 Care should be taken in interpreting the data in the 'All reasons not available to start work/more hours' and 'Main reason not available to start work/more hours' items. For the 2010-11 MPHS, there has been an increase in 'Caring for children' as the reason for not being available to work. This is due to some people with young children in the 2008-09 MPHS, who indicated that 'Home duties' was their reason for not being available for work, rather than 'Caring for children'.
23 For a more detailed list of available data items and their categories, see Appendix 1 - B&I and R&RI 2010-11 Data Items List.
24 The ABS plans to conduct this survey again (including the incentives module) during the 2012-13 financial year.
25 ABS publications draw extensively on information provided freely by individuals, businesses, governments and other organisations. Their continued cooperation is very much appreciated: without it, the wide range of statistics published by the ABS would not be available. Information received by the ABS is treated in strict confidence as required by the Census and Statistics Act 1905.
PRODUCTS AND SERVICES
26 An electronic version of the tables released in this publication is available on the ABS web site in spreadsheets (cat. no. 6239.0). The spreadsheets present the tables and the related relative standard errors (RSEs) for each publication table.
Microdata record file
27 A microdata data file will also be available to be tabulated via Survey TableBuilder in early 2012 from the 2010-11 MPHS. This will replace the Confidentialised Unit Record File (CURF) that was accessible through RADL for the 2008-09 MPHS. Further information is available via the ABS website (see Services, Microdata - CURFs and TableBuilder, About Survey TableBuilder).
28 ABS publications which may also be of interest include:
29 Current publications and other products released by the ABS are available from the Statistics Page on the ABS website. The ABS also issues a daily Release Advice on the website which details products to be released in the week ahead.
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