Public Libraries Survey Data File Overview
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Transcript of Public Libraries Survey Data File Overview
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Public Libraries Survey Data File Overview
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What We’ll Talk About
PLS: Public Libraries Survey• State level data• Public library data (Administrative Entities)• Outlet data (central libraries, branches, and
bookmobiles)• Edit Report and annotation file• Post submission process
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9,225 U.S. Public Library Administrative Entities
17,470 Outlets
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PLS and the Public Library National Data Collection Process
• PLS relies on the joint efforts of IMLS, Census, and the states.
• PLS collection is based on standard items and definitions.
• Guidance is provided by the Library Statistics Working Group (LSWG).
• PLS process assures data is submitted electronically in a standard format.
• The WebPLUS User’s Guide contains data definitions and filing instructions
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Input of Data to WebPLUS
• Data can be entered directly into the software viewing screens
• This is most often done to correct or update data for a limited number of items
• Data can be imported (more than once!)• Administrative Entities and Outlets data imported
separately• Importing reduces keying errors
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PLS Data Files
State Characteristics File
• Fiscal Year Reported
• Population Totals
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Population of Legal Service Area
• Determine Total State Population
• Determine Population Served by library
• You can receive this information from your State Data Centers
• Used to calculate per capita data for the publication
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State Characteristics
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PLS Data FilesAdministrative Entity
• Annual report records for each US public library
• Records contain central library address, general information, and annual data on library activities
• Administrative Entity records combine data for all library outlets (central, all branches, and bookmobiles)
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Input of Data to WebPLUSAdmin File for Import to WebPLUS
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Administrative Entity
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PLS Data Files
Outlet File Central, Branches and Bookmobiles
• Identifies central, branches and bookmobiles
• Includes metropolitan status code, square footage, hours open, weeks open
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Input of Data to WebPLUSOutlet File for Import to WebPLUS
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Outlets
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PLS Data FilesAnnotations File
• Explains anomalies in data
• Can come directly from library or from SDC
• Anomalies without annotations will generate edit report questions
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Annotations FileFile for Import to WebPLUS
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Edit Report
• Questions anomalies in data
• Can be resolved by• Changing data• Providing explanation
• When all items resolved you can lock data
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Edit Report
• Edit checking occurs after data entry and matching routine
• Two types of data edit checks• Current-year checks• Historical checks (based on comparisons of current-
year with prior-year data)• State data coordinators must provide
explanations for the edit flags and file an annotated edit report with the data submission
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Edit ReportEdit Report File : Report Sorted by Edit Number
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Edit ReportEdit Report File: Report Sorted by Library Name
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Survey Submission• State submission and IMLS file
acceptance is final• Census may request additional
information during the Edit Follow-up process
• Public library information from all the states is merged for that year’s data file
• Missing data is imputed
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Why PLS?• To collect accurate US library data, we need data that
is• Valid• Reliable• Timely
• “Valid” means we’re reporting what we all agree to report (PLS definitions)
• “Reliable” means measurement methods are consistent (Edit checks help confirm consistency)
• “Timely” means within timelines and by due date• PLS is the only source of comprehensive national
public library data, a voluntary, collaborative effort
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Imputed Data
• Missing data (-1) are imputed for national totals and state ranking purposes
• Imputed data are included in the national database• Imputed data are flagged on the library’s PLS record• Imputed data are not displayed on the public library
peer comparison tool
• Rules for imputation differ according to the data (See technical notes)
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Final Products
• Public Libraries in the United States report• Includes tables for each data element collected• Includes state per capita rankings for selected data
elements• Trend analysis for national totals
• Compare and Search Tools on the IMLS Web site
• The Public Library Data files are posted to the Web
• Request export file of your final data