1. DUPLICATION IN CONSORT
Presentation for OhioLINK CIRM
September 6, 2002
Margo Warner Curl
Coordinator of Cooperative Collection Development,
CONSORT Colleges
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

2. DUPLICATION IN CONSORT
HYPOTHESIS
There is too much duplication of items in CONSORT, particularly in current purchases.
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

3. DUPLICATION IN CONSORT
Overall there are 1.41 item records per bibliographic record in CONSORT.
This includes multi-volume and multi-copy items.
This includes all formats of materials.
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

4. DUPLICATION IN CONSORT
How much duplication is there in recent purchases?
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

5. DUPLICATION IN CONSORT
POPULATION
Bibliographic records for print monographs in CONSORT for which there was at least one order record attached with an order received date between July 1, 2000 and December 31, 2001 – 23,002 bibs.
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

6. DUPLICATION IN CONSORT
SAMPLE
Determined that sample of 325 records was needed in order to have 99% confidence that the sample mean of copies per title was in .1 copy/title of the population.
Used SPSS v.10 to manipulate the data
Random sample selection performed as a function of SPSS
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

7. DUPLICATION IN CONSORT
METHODOLOGY
Looked up each bib in CONSORT
Noted holdings of each institution (ignored multiple volumes, ignored multiple copies at single institution)
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

8. DUPLICATION IN CONSORT
RESULTS
1.66 copies per bibliographic record
54.8% of the titles had only one copy
22.7% of the titles had two copies
14.5% had three copies
3.1% had four copies
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

9. DUPLICATION IN CONSORT
Of the 325 titles, 309 were circulating, 16 noncirculating
Circulating titles – 1.63 copies / title
Noncirculating titles – 2.27 copies / title
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

10. DUPLICATION IN CONSORT
Is there a way to make this more meaningful to library staff & directors?
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

11. DUPLICATION IN CONSORT
COST of duplication
For every $1 of the cost of a book, CONSORT libraries collectively are spending $1.66
For every $1 of the cost of a circulating book, CONSORT libraries are spending $1.63
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

12. DUPLICATION IN CONSORT
COST of duplication
Library A – 63.6% of holdings duplicated – 63.6% of budget to duplicated items?
Library B – 65.2%
Library C – 66%
Library D – 73.6%
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

13. DUPLICATION IN CONSORT
CIRCULATION – of 309 circulating titles
Titles with one copy circs/item
Titles with four copies – 1.72 circs/item
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

14. DUPLICATION IN CONSORT
QUESTIONS
Is there an optimum number of copies per title?
Is reducing the amount of duplication between collections a valid goal?
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster

15. DUPLICATION IN CONSORT
QUESTIONS
Is it possible to articulate characteristics of titles more or less appropriate to duplicate?
Can practical strategies be developed to reduce the amount of duplication?
CONSORT
Denison University, Kenyon College, Ohio Wesleyan University, The College of Wooster