Developing the income data in the Scottish Household Survey Chris Martin, Associate Director, Ipsos...
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Transcript of Developing the income data in the Scottish Household Survey Chris Martin, Associate Director, Ipsos...
Developing the income data in the
Scottish Household
Survey
Chris Martin, Associate Director, Ipsos MORI
Income and Poverty Statistics Seminar 11th June
2
Content
Brief introduction to the income data in the SHS
Remit of the review/feasibility study
Implications for the data
Discussion
3
…a bottom up approach
Total Net Household Income
Earnings
Other jobs
SpouseHIH
Main job
Benefits Miscellaneous Sources
DisabilityNon-disability
Income support
Jobseekers Allowance
Statutory Sick Pay
DLA
+ 10 Others
State Pension
Child Benefit
Housing Benefit
Dig Money
Invalid Care Allowance
Incapacity Benefit
Attendance Allowance
+ 6 Others
Investment Income
Maintenance payments
Private pension
Student loan
+ 5 Others
4
How income is derivedQuestionnaire Earnings –
- Are you (& your spouse) employed?- How many jobs?- Amount received/over what period- Net or Gross amount
Benefits/other sources- Do you (or your partner) receive any of these benefits/other sources?- Who receives it?- Amount received/over what period.
Data processing Calculate annual amounts for each component Convert gross earnings to net earnings Clean data (examine outliers, compare with other variables) Impute missing values (refusals and don’t knows) using various
methods for each component separately Sum all components Any household with less than £50 per week set to missing
5
Remit of the review
Examine definition of total net household income Extending the estimate to include all adult household members?
- By using FRS data to model likely amounts?- By extending the questionnaire?- By imputing this information?
Imputing income for households where it is currently set to missing?
Examine the design of the questionnaire How the questions are structured. The current coverage of the sources of income (particularly “investment
income” Harmonisation between the SHS and other surveys (the SHCS, possibly
learning from the FRS).
Examine the imputation routines used. An additional annual re-imputation (currently all undertaken on a
quarterly basis)? Imputing missing income for the SHS and the SHCS together.
6
Discussion points
Were you aware that Local Authority level income data was available from the SHS?
Do you currently use income data from the SHS? If so, how and what for? If not, why?
Do you think work is required to estimate the income of all householders, so that equivalised income could be calculated?
How would you use improved income data from the SHS? What decisions would you hope to be able to base on results from SHS analysis?
How important do you think harmonisation with other household surveys is?