E-book DDA Update
Maria SavovaCollection Management & Digital Integration Librarian
SCELC Colloquium – March 5, 2014
Overview
~50,000 DDA titles from EBL (updating
profile + manual additions)
5 Months: Oct 2013 – Feb 2014
Autopurchase on 5th short term loan (STL)
List price of titles used $347,600
Spent $32,650 (9.3%):
57 autopurchases @ $ 5,764
2598 STLs @ $ 26,888
Summary of usage - # of uses
Free browses STLs Autopurchase0
500
1000
1500
2000
2500
3000
3500
2866(44%)
526(8%)
478 (7%)
2598(40%)
57 (7%)
Paid Free
Is our purchase trigger at the right place?
1 STL – 1594 titles (78%) 2 STLs – 237 titles (12%) 3 STLs – 66 titles (3%) 4 STLs – 83 titles (4%) Autopurchased (on 5th paid use) – 57 titles
(3%) 47 titles used again after autopurchase:▪ 28 titles used between 1 and 10 times▪ 13 titles used between 11 and 20 times▪ 5 titles used between 25 and 73 times
Of the 10 titles not used again after autopurchase, half were purchased in Feb.
Who uses the service?
Faculty Students Staff
149
1247
53
544
5783
177
# of unique users # of uses
20% of all faculty on campus and 18% of all students have used a DDA e-book at least once.
89% of all use comes from students, 8% from faculty, 3% from staff.
The average number of uses per individual user is:3.65 for faculty,4.64 for students,3.34 for staff
Which content is being used?
AH SS ST0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
470(17.52%)
1648 (61.42%)
565(21.06%)
Unique titles by discipline
Which content is being used?
Agricu
lture
Anthr
opolog
y
Art & A
rchite
ctur
e
Biologica
l Scie
nces
Busines
s & E
cono
mics
Chem
istry
Compu
ter S
cienc
e
Educ
ation
Engine
ering
& Tec
hnolog
y
Geogr
aphy
& E
arth
Scie
nces
Histor
y & A
uxilia
ry S
cienc
es
Lang
uage
, Lingu
istics
& Lite
ratu
reLa
w
Libra
ry S
cienc
e, G
ener
alities
& R
efer
ence
Mat
hem
atics
Med
icine
Mus
ic & P
erfo
rming
arts
Mus
ic an
d pe
rform
ing
arts
Philo
soph
y & R
eligion
Phys
ical S
cienc
es
Politica
l Scie
nce
Psyc
hology
Socio
logy
0.00%
5.00%
10.00%
15.00%
20.00%
25.00%
30 53 1168
523
1973
206179
28123
183
1 2294
24 27 2124
50
257142
444
Unique titles by subject
Which content is being used?
2001 2002 2003 2004 2005 2006 2008 2009 2010 2011 2012 2013 20140
500
1000
1500
2000
2500
3000
5 2 4 5 3 8 9 13
859
1108
1610
2762
1373 2 3 2 1 2 4 6
352449
669
1337
76
Titles and number of uses by year of publication
Uses by year of publication Titles by year of publication
Which content is being used?
Average number of uses per title varies between 2 and 3 for most publishers. Notable exception – NYU Press with 5.57 average uses per title
Tayl
or a
nd Fr
ancis
Wile
y
Cambr
idge
Uni
vers
ity P
ress
Prin
ceto
n Uni
vers
ity P
ress
Sprin
ger
Palg
rave
Mac
mill
an
NYU P
ress
Else
vier
Scie
nce
Duke
Unive
rsity
Pre
ss
Unive
rsity
of C
hica
go P
ress
Oxfor
d Uni
vers
ity P
ress
, USA
Rowm
an &
Litt
lefie
ld P
ublis
hers
Unive
rsity
of C
alifo
rnia
Pre
ss
OUP Oxf
ord
Stan
ford
Uni
vers
ity P
ress
0200400600800
100012001400160018002000 1854
742 694
322 310 301195 162 159 143 142 132 125 123 85
902
389 295115 189 123 35 60 48 47 70 41 37 44 37
Titles and number of uses by pub-lisher
Uses by publisher Titles by publisher
At what time of day is the content accessed?
8-9 am
9-10 am
10-11 am
11 am - 12 pm
12-1 pm
1-2 pm
2-3 pm
3-4 pm
4-5 pm
5-6 pm
6-7 pm
7-8 pm
8-9 pm
9-10 pm
10-11 pm
11 pm - 12 am
12-1 am
1-2 am
2-3 am
3-4 am
4-5 am
5-6 am
6-7 am
7-8 am
0%2%4%6%8%
10%12%14%
Dec 24 - Jan 20 (Winter break)
8-9 am
9-10 am
10-11 am
11 am - 12 pm
12-1 pm
1-2 pm
2-3 pm
3-4 pm
4-5 pm
5-6 pm
6-7 pm
7-8 pm
8-9 pm
9-10 pm
10-11 pm
11 pm - 12 am
12-1 am
1-2 am
2-3 am
3-4 am
4-5 am
5-6 am
6-7 am
7-8 am
0.00%
2.00%
4.00%
6.00%
8.00%
Sep 27 - Dec 23; Jan 21-Feb 25 (During the semester)
THANK YOU!