Does Use of E-Books Impact Use of P-Books?

Does Use of E-Books Impact Use of P-Books? Electronic Resources & Libraries Austin, April 4, 2012 Christopher C. Brown Michael Levine-Clark

Does Use of P-Books Impact Use of E-Books?

Methodology

Publisher A• U.S. University Press• Added Dec 2008• Purchase all e/p• 1,368 e-books – Frontlist approximately 120 per year – Backlist• 2,175 p-books• 888 in both formats

Publisher B• Large STM• Added January 2009• Purchase all e• 27,825 e-books – Frontlist approximately 4,000 per year – Backlist• 18,693 p-books• 4,099 in both formats

The Data• Gathered circ data – Through December 2008 – Each subsequent December (2009-2011) – Cumulative• Compiled e-book use data – At end of each year, 2009-2011 – For each year

Apples and Oranges• pBook checkouts – Undergrad: 3 weeks – Grad: 10 weeks – Faculty: 1 year – Potentially many uses per checkout, and some when deciding to checkout• eBook use – One time in the book is one use

About Discovery and Data• Discovery through catalog records• Data merger issues: – Title variations – ISBN complexities – Multi-volume issues

E and P Typically Pattern Together in Results Classic Catalog Encore (next-gen) Catalog

Data Difficulties: Title Variations Catalog Record Vendor Record The Sri Lanka reader : history, culture, politics / World Readers : Sri Lanka Reader : History, John Clifford Holt, ed. Culture, Politics Julia Childs The French chef / Dana Polan. Spin Offs : Julia Childs The French Chef Strange affinities : the gender and sexual politics Perverse Modernities : Strange Affinities : The of comparative racialization / edited by Grace Gender and Sexual Politics of Comparative Kyungwon Hong & Roderick A. Ferguson. Racialization The war machines : young men and violence in Cultures and Practice of Violence : War Machines : Sierra Leone and Liberia / Danny Hoffman. Young Men and Violence in Sierra Leone and Liberia Uomo delinquente. English.Criminal man / Cesare Criminal Man Lombroso ; translated and with a new introduction by Mary Gibson and Nicole Hahn Rafter, with translation assistance from Mark Seymour. Hegel e la libert├á dei moderni. English Hegel and Hegel and the Freedom of Moderns the freedom of moderns / Domenico Losurdo ; translated from the Italian by Marella and Jon Morris. Perversion and the social relation / Molly Anne SIC, Volume 4 : Perversion and the Social Relation Rothenberg, Dennis Foster, and Slavoj Å½iÅ¾ek, editors.Vendors and catalogers don’t necessarily agree on title formation.

Data Difficulties: Multiple ISBNs

Data Difficulties: ISBN 10? ISBN 13?

Data Difficulties: ISBN Irregularities Note the ISBN10 with ISBN 13, the parentheses, and the multiple ISBN numbers

Data Solution: Create an ISBN 9ISBN 9 eliminates the ISBN 13 – 978 prefixand the final check-digit, creating a useablematch-point, in cases where the electronicand print versions agree on base ISBN.

Data Methodology using Microsoft Access• Get use annual use stats of ebooks from vendor• Get master list of e titles from vender.• Derive ISBN9 for each list for proper overlay• Overlay annual use stats onto master list of e books• Get circ stats for print books from ILS• Derive master list of all print titles from ILS• Derive ISBN 9 for each p title.• Overlay annual circ stats onto master list of p books• Merge circ and use data together• Repeat for other publisher!

Data Conclusions• Microsoft Access for overlays; Microsoft Excel for analysis• Better standards are needed – a single ISBN, please!• Overlay on title is nearly impossible• Deriving an “ISBN9” was the only way to get anywhere, but even this was far from perfect

eBooks• Publisher A – 502 titles used (36.7%) – 27,640 uses • 55.1 per title used • 20.2 per title – 866 titles not used• Publisher B – 576 titles used (2.1%) – 3,930 uses • 6.8 per title used • 0.1 per title – 27,249 titles not used

pBooks• Publisher A – 1,435 titles used (66.0%) – 4,196 checkouts (2,727 before Dec 2008) • 2.9 per title used • 1.9 per title – 740 titles not used• Publisher B – 7,103 titles used (38.0%) – 16,778 checkouts (13,570 before Dec 2008) • 2.4 per title used • 0.9 per title – 11,590 titles not used

Most Used eBooks, Publisher A• Poor People’s Politics: Peronist Survival Networks and the Legacy of Evita (2001) – 2,174 uses (all in 2011) – 4 checkouts (1 before Dec 2008, 1 in 2010, 2 in 2011)• Museum Frictions: Public Cultures/Global Transformations (2006) – 1,003 uses (824 in 2010) – 4 checkouts (2 before Dec 2008, 1 in 2010, 1 in 2011)

Most Used eBooks, Publisher B• Automata, Languages, and Programming: Sixth Colloquium (1979) – 606 uses (561 in 2011) – 0 checkouts• Naive Lie Theory (2008) – 46 uses (45 in 2009) – 0 checkouts

Most Used pBooks, Publisher A• Argumentative Turn in Policy Analysis and Planning (1993) – 37 checkouts (36 before Dec 2008) – 9 uses of the e-version• Culture, Power, Place: Explorations in Critical Anthropology (1997) – 24 checkouts (21 before Dec 2008) – 14 uses of the e-version (11 in Dec 2008)

Most Used pBooks, Publisher B• Resilience and Development: Positive Life Adaptations (1999) – 18 checkouts (17 prior to Dec 2008 – 0 uses of the e-version• AIDS in Africa (2002) – 17 checkouts (15 prior to Dec 2008) – 0 uses of the e-version

Dual Format Use• Publisher A – 325 titles used in both formats • 20,619 e-book uses – 63.5 per title used • 1,229 p-book checkouts (743 before Dec 2008) – 3.8 per title used• Publisher B – 356 titles used in both formats • 2,566 e-book uses – 7.2 per title used • 930 p-book checkouts (422 before Dec 2008) – 2.6 per title

P Used, E Not• Publisher A – 394 titles – 952 checkouts • 2.4 per title used• Publisher B – 1,401 titles – 2,547 checkouts • 1.8 per title used

E Used, P Not• Publisher A – 177 titles – 7,021 uses • 39.7 per title• Publisher B – 219 titles – 1,364 uses • 6.2 per title

eBook Usage Levels (per title)

pBook Usage Levels (per title)

How Closely Are P/E Usage Linked?

Increased Checkouts, 2008-2011• For titles available at the start of the project (Dec 2008), how many more checkouts were there by Dec 2011?• Was that increase linked in any way to e- usage?

Increased Checkouts 2008-2011• Publisher A – 1,057 titles with increased checkouts – 707 had no e-availability – 192 also had e-use • 75.6 uses per title – 158 had no e-use• Publisher B – 2,023 titles with increased checkouts – 1,398 had no e-availability – 177 also had e-use • 7.0 uses per title – 449 had no e-use

Observations• Use of E doesn’t seem to lead to use of P• Use of P doesn’t seem to lead to use of E• If both formats are used, they are both used at a higher rate than average

Further Questions• Might there be differences – By subject? – By date?• What sort of measure of time in a book can we look at?• How does discovery play in?

Thank You

Does Use of E-Books Impact Use of P-Books?

by Michael Levine-Clark

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