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Unified Enterprise Survey Unified Enterprise Survey New HorizonsNew Horizons
International Conference on Establishment Surveys
Daniela Ravindra and Marie Brodeur
Montreal, June 2007
Statistics CanadaStatistique Canada
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Outline1. Background2. Principles3. Survey Characteristics4. Sampling and Use of Tax Data5. Processing6. Analysis and Dissemination7. Achievements
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Background to the Integrated Approach
Established in 1997 Goal to integrate all annual business surveys Objectives:
– Improve coherence– Improve breath and depth of data–Not increase response burden
Created one central area for processing (ESD)
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Integrated Approach Principles
Use of a single unduplicated frame -- the BR
Common sample design methodology
Questionnaire
–harmonized concepts / variables
–Generic portion
Centralized Data Collection
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Integrated Approach Principles (continued)
Integrated metadata system
Common generic processing systems and methods (all residing in ESD)
Centralized data warehouse
Head Office Survey
Maximum use of tax data
Coherence analysis for large enterprises
Regular profiling of large enterprises
Holistic approach to response management
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Survey Characteristics All annual surveys Establishment Surveys Currently 64 surveys but plans to add more Smallest businesses estimated through tax
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Sampling Stratified Random Sample
– Industry – Province– Size
1 Take-all stratum 2 Take-some strata (50% of units
replaced by tax) Take-none strata
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Sampling ProcessSampling ProcessSurvey Universe File
(2M businesses)
Sample Control File(2M businesses)
Survey Interface File38K CEs / Questionnaires
Tax Est’d (1.4M)
UES Sample (70K businesses)
Tax Replacements17K CEs
55K CEs
BR(2.3M businesses)
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UES : Use of Tax Data in Sampling
T1 T2 and other
T1TN:
Sample of T1
T2 TN:
Census of T2
THRESHOLDS
Main sample to be surveyed(sample size of about 47k, from which 4k are T1)
Take-none : Weighted Sample of T1 and Census of T2
Sample substitution (TRP) for pre-identified T1 (unincorporated) and T2 (Incorporated) units.
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Centralized CollectionCentralized Collection
Mailout
Pre-Contact
Edit / Verification(BLAISE)
Receipt(75% target)
Delinquent Follow-UpCapture / Imaging
“Clean” Records
Score Function
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Centralized Processing Systems and Databases
Develop centralized systems– Single point of access for security– Move away from stand-alone– Increase efficiency of resource use
Integrated Questionnaire Metadata System Edit and imputation
– Use generalized system Allocation
– Developed for complex units– In the process of standardizing the approach
Estimation
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Post-Collection Post-Collection ProcessingProcessing
Pre-Grooming
Allocation / Estimation
Edit & Imputation
“Clean” Records
Central Data Store
Subject Matter Review & Correction
Tool
Tax Data
USTART
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UES: Use of Tax Data in Post-Collection
Validation (comparison)– Verify dubious collected data against it’s
equivalent tax data record Imputation
– One of the methods used for non-response Estimation
– Weighted TRP units, T2 take-none, weighted T1 take-none, T1 adjustments for units not on the business register
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UES: Use of Tax Data in Post-Collection (continued)
Not always a direct correspondence between tax and survey variables: differences in concepts and definitions
Developed a common mapping to bring them together
–Standard income statement called Chart of Accounts
–Map survey and tax data to it
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Analysis and Dissemination
Analysis conducted by subject-matter specialists
Use of common analytical tools Estimates released no later than 15
months after reference date Previous year’s data is revised when
working on current year
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Achievements
Timeliness improved Efficient, streamlined systems Common database Response burden reduced More coherent data More efficient use of resources