OhioLINK Collection Analysis Project ASIS&T Annual Conference 28 October 2008 Preliminary Analysis Edward T. ONeill, OCLC Julia A. Gammon, University of Akron

Origin of OhioLINK Originated in 1987 with the Library Study Committee Reports Recommendation to create a statewide catalog

OhioLINK Today Shared catalog with patron initiated borrowing Nearly 50 million books and other library materials Over 600,000 Users at over a hundred institutions Virtually all public and private academic libraries in Ohio Including: The State Library of Ohio 5 ARL Institutions 11 Universities 44 Colleges 15 Community Colleges 28 Branch campuses 5 Depositories 3 Museums and other independent cultural institutions 20 Off-campus hospitals and medical centers

Research Project Joint study by OhioLINK, OhioLINK members, OhioLINK Collection Building Task Force (CBTF) and OCLC Research Much of the planned analysis is new and untested; not all of the analysis will be successful This project is distinct from OCLCs collection analysis service

Distinctive Aspects Size and scope of collections Use of local holdings information Number and variety of institutions FRBR (Functional Requirements for Bibliographic Records) Application of Audience Level

Project Goals To reduce unnecessary duplication To increase local collection development activities To expand the amount spent on cooperative acquisitions To strengthen the collective collection For the book collection:

OhioLINK Circulation Data Item No.: OCLC No.: Title: LCCN: Location Code: Status Code: Circulation: Renewals: Accession date: Date of Last Use: ISBN: Source : i The infinite / A.W. Moore bc /3/2001 8/23/ (pbk.) Akron

WorldCat Linking For records with an obsolete OCLC No.; the obsolete OCLC No. is replaced with the current OCLC No. For records lacking an OCLC No. which had either a unique LCCN or ISBN; that number is used to identify the corresponding OCLC No. Records lacking any standard number were not be validated and were excluded from the study Records from the 2007 circulation files were paired the 2008 to determine annual circulation The resulting data set contained the circulation records for ~30 million different items Approximately 93% of the records were validated; many of the unvalidated records were for non-book materials The OCLC Number is used to link the circulation records to the corresponding bibliographic record in WorldCat

Caution! The project is still in progress and the data analysis is incomplete Results are preliminary; revisions and corrections will occur

The Circulation Data Total circulation49,697,093 No. of items (Volumes)29,570,205 Number of items circulated11,850,584 No. circulated in previous year2,715,573 No. of manifestations (Books)6,955,505 Number of books circulated3,402,603 No. circulated in previous year986,208

Library Organizational Structure The large universities are complex organizations: Multiple administrative units Many different physical locations Branch campuses Depositories Independent cultural institutions Off-campus hospitals and medical centers

Library Organizational Structure Campuses, independent cultural institutions, and depositories are treated as top (first) level units Independent administrative units (if present) within the campus Separate libraries (if present) within an administrative unit Distinct collections with unique location codes

Three Level Structure for Akron

Individual Institutions: Whats Where? How big are the collections? What is being used? What are the subject strengths? How unique? How old are the books? How comprehensive?

General Information

Subjects The subject analysis included 24 primary subjects; a more detailed subject analysis with approximately 500 subject areas will included in the final analysis

Age Statistics on 20 different age groups are provided

Collective Collection: What Do We Have? How many items do we have? What languages do we have? How old are they? How many are unique? In what subjects? How many copies do we need?

Subject Distribution

Circulation of Non-English Materials Average per Item Circulation: 1.68

Circ. Rate by Institution Type ARL Univ.Colleges CC/ Branches Circulation

Usage Distribution Number of Manifestations Annual Circulation 455, %

Duplication Rate Publication Date Average No. of Copies 4.5

Duplication by Subject

Conclusions? Only first phase of data analysis complete Additional and more reliable statistics will be available after the next phase is complete Preliminary results: Duplication rates are steady The 80/20 rule may be closer to 80/5 Limited use of non-English materials Circulations rates vary greatly by subject, institution, … To be continued ….

Questions? Ed ONeill, OCLC Research, Julia A. Gammon, University of Akron,