<s>
Epi	B-Application
Info	I-Application
is	O
statistical	B-Algorithm
software	I-Algorithm
for	O
epidemiology	O
developed	O
by	O
Centers	O
for	O
Disease	O
Control	O
and	O
Prevention	O
(	O
CDC	O
)	O
in	O
Atlanta	O
,	O
Georgia	O
(	O
US	O
)	O
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
has	O
been	O
in	O
existence	O
for	O
over	O
20	O
years	O
and	O
is	O
currently	O
available	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
Android	B-Application
and	O
iOS	B-Application
,	O
along	O
with	O
a	O
web	O
and	O
cloud	O
version	O
.	O
</s>
<s>
An	O
analysis	O
conducted	O
in	O
2003	O
documented	O
over	O
1,000,000	O
downloads	O
of	O
Epi	B-Application
Info	I-Application
from	O
180	O
countries	O
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
has	O
been	O
in	O
development	O
for	O
over	O
20	O
years	O
.	O
</s>
<s>
The	O
first	O
version	O
,	O
Epi	B-Application
Info	I-Application
1	O
,	O
was	O
originally	O
developed	O
by	O
Jeff	O
Dean	O
while	O
he	O
was	O
in	O
high	O
school	O
.	O
</s>
<s>
It	O
was	O
an	O
MS-DOS	B-Application
batch	O
file	O
on	O
5.25	O
"	O
floppy	O
disks	O
and	O
released	O
in	O
1985	O
.	O
</s>
<s>
MS-DOS	B-Application
continued	O
to	O
be	O
the	O
only	O
supported	O
operating	O
system	O
until	O
the	O
release	O
of	O
Epi	B-Application
Info	I-Application
2000	B-Application
,	O
which	O
was	O
written	O
in	O
Microsoft	O
's	O
Visual	O
Basic	O
and	O
became	O
the	O
first	O
Windows-compatible	O
version	O
.	O
</s>
<s>
The	O
last	O
MS-DOS	B-Application
version	O
was	O
Epi	B-Application
Info	I-Application
6.04d	O
released	O
in	O
January	O
2001	O
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
2000	B-Application
changed	O
the	O
way	O
data	O
was	O
stored	O
by	O
adopting	O
the	O
Microsoft	B-Application
Access	I-Application
database	O
format	O
,	O
rather	O
than	O
continuing	O
to	O
use	O
the	O
plain-text	O
file	O
format	O
from	O
the	O
MS-DOS	B-Application
versions	O
.	O
</s>
<s>
Following	O
the	O
release	O
of	O
Epi	B-Application
Info	I-Application
2000	B-Application
was	O
Epi	B-Application
Info	I-Application
2002	O
,	O
then	O
Epi	B-Application
Info	I-Application
version	O
3.0	O
,	O
and	O
finally	O
the	O
open-source	O
Epi	B-Application
Info	I-Application
7	B-Device
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
7	B-Device
was	O
made	O
open	O
source	O
on	O
November	O
13	O
,	O
2008	O
,	O
when	O
its	O
source	O
code	O
was	O
uploaded	O
to	O
Codeplex	B-Protocol
for	O
the	O
first	O
time	O
.	O
</s>
<s>
The	O
7	B-Device
series	O
is	O
the	O
presently	O
maintained	O
Epi	B-Application
Info	I-Application
product	O
line	O
.	O
</s>
<s>
Note	O
that	O
Epi	B-Application
Info	I-Application
3	O
for	O
Windows	B-Application
is	O
different	O
from	O
Epi	B-Application
Info	I-Application
3	O
for	O
MS-DOS	B-Application
even	O
though	O
they	O
share	O
the	O
same	O
version	O
number	O
.	O
</s>
<s>
After	O
Microsoft	O
shut	O
down	O
Codeplex	B-Protocol
in	O
December	O
2017	O
,	O
the	O
repository	O
of	O
Epi	B-Application
Info	I-Application
migrated	O
to	O
GitHub	B-Application
.	O
</s>
<s>
From	O
a	O
user	O
's	O
perspective	O
,	O
the	O
most	O
important	O
functions	O
of	O
Epi	B-Application
Info	I-Application
are	O
the	O
ability	O
to	O
rapidly	O
develop	O
a	O
questionnaire	O
,	O
customize	O
the	O
data	O
entry	O
process	O
,	O
quickly	O
enter	O
data	O
into	O
that	O
questionnaire	O
,	O
and	O
then	O
analyze	O
the	O
data	O
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
uses	O
three	O
distinct	O
modules	O
to	O
accomplish	O
these	O
tasks	O
:	O
Form	O
Designer	O
,	O
Enter	O
,	O
and	O
Analysis	O
.	O
</s>
<s>
Import	O
and	O
export	O
functions	O
exist	O
that	O
allow	O
for	O
data	O
to	O
be	O
converted	O
between	O
plain-text	O
,	O
CSV	O
,	O
Microsoft	B-Application
Excel	I-Application
,	O
Microsoft	B-Application
Access	I-Application
,	O
MySQL	O
,	O
Microsoft	O
SQL	O
Server	O
,	O
and	O
other	O
formats	O
.	O
</s>
<s>
Older	O
versions	O
of	O
Epi	B-Application
Info	I-Application
contained	O
a	O
Report	O
module	O
and	O
a	O
Menu	O
module	O
.	O
</s>
<s>
The	O
Report	O
module	O
allowed	O
the	O
user	O
to	O
edit	O
and	O
format	O
the	O
raw	O
output	O
from	O
other	O
Epi	B-Application
Info	I-Application
modules	O
into	O
presentable	O
documents	O
.	O
</s>
<s>
The	O
menu	O
module	O
allowed	O
for	O
the	O
editing	O
and	O
re-arranging	O
of	O
the	O
basic	O
Epi	B-Application
Info	I-Application
menu	O
structure	O
.	O
</s>
<s>
This	O
module	O
was	O
powerful	O
enough	O
that	O
several	O
applications	O
have	O
been	O
built	O
off	O
of	O
it	O
(	O
in	O
versions	O
of	O
Epi	B-Application
Info	I-Application
prior	O
to	O
version	O
7	B-Device
)	O
,	O
including	O
the	O
National	O
Electronic	O
Telecommunications	O
System	O
for	O
Surveillance	O
(	O
NETSS	O
)	O
for	O
Epi	B-Application
Info	I-Application
6	O
.	O
</s>
<s>
In	O
Epi	B-Application
Info	I-Application
7	B-Device
,	O
the	O
Visual	O
Dashboard	O
assumes	O
some	O
of	O
the	O
basic	O
functions	O
of	O
the	O
report	O
module	O
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
7	B-Device
includes	O
a	O
number	O
of	O
nutritional	O
anthropometric	O
functions	O
that	O
can	O
assist	O
in	O
recording	O
and	O
evaluating	O
measurements	O
of	O
length	O
,	O
stature	O
,	O
weight	O
,	O
head	O
circumference	O
,	O
and	O
arm	O
circumference	O
for	O
children	O
and	O
adolescents	O
.	O
</s>
<s>
They	O
can	O
be	O
used	O
to	O
calculate	O
percentiles	O
and	O
number	O
of	O
standard	O
deviations	O
from	O
the	O
mean	O
(	O
Z-scores	O
)	O
using	O
the	O
CDC/WHO	O
1978	O
growth	O
reference	O
,	O
CDC	O
2000	B-Application
growth	O
reference	O
,	O
the	O
WHO	O
Child	O
Growth	O
Reference	O
,	O
or	O
the	O
WHO	O
Reference	O
2007	O
.	O
</s>
<s>
It	O
replaces	O
the	O
NutStat	O
and	O
EpiNut	O
modules	O
found	O
in	O
prior	O
versions	O
of	O
Epi	B-Application
Info	I-Application
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
is	O
used	O
for	O
analysis	O
in	O
medical	O
research	O
,	O
and	O
for	O
data	O
entry	O
.	O
</s>
<s>
Examples	O
of	O
papers	O
that	O
used	O
Epi	B-Application
Info	I-Application
for	O
data	O
entry	O
include	O
a	O
study	O
on	O
nutrition	O
and	O
an	O
epidemiological	O
survey	O
about	O
echinococcosis	O
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
is	O
very	O
briefly	O
described	O
in	O
a	O
review	O
of	O
software	O
that	O
might	O
be	O
used	O
for	O
research	O
about	O
cancer	O
trend	O
analysis	O
.	O
</s>
<s>
Another	O
report	O
indicated	O
that	O
Epi	B-Application
Info	I-Application
was	O
among	O
the	O
most	O
widely	O
used	O
tools	O
during	O
outbreaks	O
.	O
</s>
<s>
Another	O
study	O
also	O
reported	O
that	O
Epi	B-Application
Info	I-Application
was	O
among	O
the	O
tools	O
used	O
to	O
collect	O
data	O
during	O
pandemics	O
.	O
</s>
<s>
One	O
study	O
compared	O
the	O
statistical	O
results	O
from	O
various	O
free	O
to	O
use	O
statistical	B-Algorithm
software	I-Algorithm
and	O
found	O
that	O
Epi	B-Application
Info	I-Application
gave	O
the	O
same	O
results	O
as	O
did	O
SAS	O
.	O
</s>
<s>
OPenEpi	B-Application
is	O
an	O
online	O
version	O
of	O
the	O
software	O
and	O
has	O
inbuilt	O
statistical	O
calculators	O
.	O
</s>
<s>
For	O
more	O
information	O
,	O
see	O
the	O
article	O
OpenEpi	B-Application
.	O
</s>
<s>
Version	O
7	B-Device
is	O
in	O
continuing	O
development	O
as	O
an	O
open	O
source	O
project	O
.	O
</s>
<s>
Series	O
Version	O
Operating	O
System	O
Support	O
Support	O
status	O
Release	O
date	O
Significant	O
changes	O
Epi	B-Application
Info	I-Application
for	O
DOS	O
1	O
MS-DOS	B-Application
1	O
Sep	O
1985	O
2	O
MS-DOS	B-Application
20	O
Aug	O
1986	O
3	O
MS-DOS	B-Application
1988	O
4.1	O
MS-DOS	B-Application
15	O
Nov	O
1988	O
5.01	O
MS-DOS	B-Application
Oct	O
1990	O
Allowed	O
European	O
date	O
formats	O
and	O
non-English	O
characters	O
in	O
data	O
fields	O
.	O
</s>
<s>
6.0	O
MS-DOS	B-Application
1992	O
Added	O
programmable	O
menu	O
system	O
6.02	O
MS-DOS	B-Application
Oct	O
1994	O
6.04c	O
MS-DOS	B-Application
1998	O
Year	O
2000	B-Application
compatibility	O
upgrade	O
6.04d	O
MS-DOS	B-Application
Jan	O
2001	O
Epi	B-Application
Info	I-Application
2000	B-Application
2000	B-Application
1.1.2	O
Windows	B-Application
9x	O
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
2	O
Nov	O
2001	O
First	O
Windows-compatible	O
version	O
of	O
Epi	B-Application
Info	I-Application
.	O
</s>
<s>
2002	O
R2	O
Windows	B-Application
9x	O
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
30	O
Jan	O
2003	O
Epi	B-Application
Info	I-Application
3	O
3.0	O
Windows	B-Application
9x	O
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
n/a	O
3.01	O
Windows	B-Application
9x	O
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
3	O
Nov	O
2003	O
3.2	O
Windows	B-Application
9x	O
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
4	O
Feb	O
2004	O
3.2.2	O
Windows	B-Application
9x	O
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
14	O
Apr	O
2004	O
3.3	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
5	O
Oct	O
2004	O
Windows	B-Application
95	O
no	O
longer	O
supported	O
,	O
case-based	O
mapping	O
functionality	O
added	O
to	O
the	O
Analysis	O
MAP	O
command	O
.	O
</s>
<s>
3.3.2	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
9	O
Feb	O
2005	O
3.4	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
30	O
Apr	O
2007	O
Ability	O
to	O
use	O
standard	O
ISO	O
date	O
formats	O
,	O
disallowed	O
multiple	O
instances	O
of	O
the	O
Analysis	O
module	O
,	O
added	O
ability	O
to	O
run	O
reports	O
from	O
Analysis	O
,	O
and	O
CDC	O
flags	O
added	O
to	O
the	O
Nutrition	O
module	O
.	O
</s>
<s>
3.4.1	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
9	O
Jul	O
2007	O
Added	O
a	O
right-to-left	O
language	O
controller	O
in	O
Analysis	O
3.4.2	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
20	O
Sep	O
2007	O
3.4.3	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
17	O
Oct	O
2007	O
3.5	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
SP3	O
9	O
Jun	O
2008	O
Added	O
feature	O
to	O
use	O
standardized	O
vocabularies	O
.	O
</s>
<s>
First	O
version	O
to	O
require	O
Service	O
Pack	O
3	O
if	O
running	O
Epi	B-Application
Info	I-Application
on	O
a	O
computer	O
with	O
Windows	B-Application
XP	O
.	O
</s>
<s>
3.5.1	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
SP3	O
,	O
Vista	B-Application
13	O
Aug	O
2008	O
First	O
version	O
compatible	O
with	O
Windows	B-Application
Vista	I-Application
.	O
</s>
<s>
3.5.2	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
SP3	O
,	O
Vista	B-Application
,	O
7	B-Device
17	O
Dec	O
2010	O
First	O
version	O
compatible	O
with	O
Windows	B-Device
7	I-Device
.	O
</s>
<s>
Also	O
included	O
a	O
preview	O
of	O
the	O
new	O
Epi	B-Application
Info	I-Application
7	B-Device
MakeView	O
and	O
Enter	O
tools	O
.	O
</s>
<s>
3.5.3	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
SP3	O
,	O
Vista	B-Application
,	O
7	B-Device
26	O
Jan	O
2011	O
Minor	O
update	O
to	O
the	O
Epi	B-Application
Info	I-Application
Enter	O
tool	O
released	O
with	O
3.5.2	O
.	O
</s>
<s>
3.5.4	O
Windows	B-Device
98	I-Device
,	O
NT	B-Device
4.0	I-Device
,	O
2000	B-Application
,	O
XP	O
SP3	O
,	O
Vista	B-Application
,	O
7	B-Device
10	O
Aug	O
2012	O
Modified	O
installation	O
packaging	O
.	O
</s>
<s>
Epi	B-Application
Info	I-Application
7	B-Device
7.0.5	O
(	O
Alpha	O
)	O
Windows	B-Application
XP	O
,	O
Vista	B-Application
,	O
7	B-Device
,	O
Ubuntu	B-Operating_System
5	O
Jan	O
2009	O
Programming	O
language	O
changed	O
to	O
Visual	O
C#	O
.NET	O
;	O
MySQL	O
and	O
SQL	O
Server	O
database	O
support	O
added	O
;	O
XML	O
meta-data	O
support	O
added	O
;	O
Linux	O
compatibility	O
added	O
;	O
first	O
Windows	B-Application
version	O
of	O
Epi	B-Application
Info	I-Application
to	O
be	O
open	O
source	O
.	O
</s>
<s>
7.0.7.0	O
Windows	B-Application
XP	O
,	O
Vista	B-Application
,	O
7	B-Device
27	O
Sep	O
2011	O
Upgraded	O
framework	O
to	O
.NET	O
version	O
3.5	O
;	O
Added	O
ability	O
to	O
run	O
Epi	B-Application
Info	I-Application
7	B-Device
from	O
a	O
flash	O
drive	O
without	O
administrator	O
rights	O
;	O
Added	O
ability	O
for	O
Epi	B-Application
Info	I-Application
7	B-Device
forms	O
to	O
work	O
with	O
essentially	O
unlimited	O
number	O
of	O
fields	O
;	O
Mapping	O
module	O
added	O
;	O
Geocoding	O
added	O
;	O
Visual	O
Dashboard	O
module	O
added	O
;	O
plugin-based	O
data	O
driver	O
model	O
added	O
;	O
Linux	O
and	O
MySQL	O
support	O
removed	O
;	O
Growth	O
charting	O
added	O
.	O
</s>
<s>
7.0.8.0	O
Windows	B-Application
XP	O
,	O
Vista	B-Application
,	O
7	B-Device
28	O
Oct	O
2011	O
Release	O
build	O
.	O
</s>
<s>
Added	O
ability	O
to	O
install	O
Epi	B-Application
Info	I-Application
7	B-Device
using	O
a	O
traditional	O
setup	O
file	O
;	O
Added	O
new	O
check	O
code	O
commands	O
;	O
Added	O
ability	O
to	O
calculate	O
z-scores	O
for	O
the	O
WHO	O
Child	O
Growth	O
Standards	O
and	O
WHO	O
Reference	O
2007	O
.	O
</s>
<s>
7.1.0.6	O
Windows	B-Application
XP	O
,	O
Vista	B-Application
,	O
7	B-Device
9	O
Aug	O
2012	O
Major	O
updates	O
to	O
Dashboard	O
module	O
;	O
Added	O
web-based	O
data	O
entry	O
capability	O
;	O
Added	O
features	O
to	O
allow	O
compatibility	O
with	O
the	O
Epi	B-Application
Info	I-Application
for	O
Android	B-Application
app	O
.	O
</s>
<s>
7.1.4.0	O
Windows	B-Application
XP	O
,	O
Vista	B-Application
,	O
7	B-Device
,	O
8	B-Application
11	O
Jul	O
2014	O
Increased	O
precision	O
for	O
some	O
statistical	O
results	O
and	O
other	O
improvements	O
to	O
Analysis	O
.	O
</s>
<s>
Added	O
ability	O
to	O
decrypt	O
and	O
import	O
data	O
collected	O
on	O
iOS	B-Application
devices	O
and	O
other	O
improvements	O
to	O
Import/Export	O
.	O
</s>
<s>
7.1.5.0	O
Windows	B-Application
XP	O
,	O
Vista	B-Application
,	O
7	B-Device
,	O
8	B-Application
19	O
Mar	O
2015	O
Added	O
SQRT	O
,	O
POISSONLCL	O
,	O
and	O
POISSONUCL	O
functions	O
to	O
Analysis	O
.	O
</s>
<s>
Included	O
various	O
changes	O
to	O
support	O
the	O
VHF	O
application	O
and	O
to	O
support	O
the	O
Android	B-Application
Companion	O
.	O
</s>
<s>
7.2.0.1	O
Requires	O
Microsoft	B-Application
Windows	I-Application
XP	O
or	O
higher	O
with	O
Microsoft	O
.NET	O
4.0	O
.	O
</s>
