Table 1 Logistic regression coefficients from modeling SDAR decay as a function of Number of Authors, Number of years since publication (SDAR_AGE) and Publication Year.

(Intercept)

-2.88

0.226

-12.7

3.25E-37

SDAR_Age

0.268

0.022

12.3

6.91E-35

NumAuthors

-0.0236

0.007

-3.34

0.00083

year2004

0.183

0.111

1.65

0.0986

year2005

0.215

0.105

2.05

0.0404

year2006

0.293

0.112

2.61

0.0090

year2007

0.3

0.12

2.51

0.0121

year2008

0.458

0.132

3.47

0.0005

year2009

0.356

0.148

2.41

0.0161

year2010

0.22

0.164

1.34

0.181

year2011

0.23

0.184

1.25

0.211

year2012

0.147

0.206

0.713

0.476

year2013

0.042

0.232

0.181

0.857