Table 1 Summary of α/β values

Brenner and Hall [8]

1.5

[0.8,2.2]

Arcangeli 2010

-0.45

[-1.31, 0.41]*

Leborgne 2011[10]

1.86

[0.7, 5.1]

Lukka 2005[11]

2.02

[-1.03, 5.07]*

Valdagni 2005

7.44

[-13.97, 28.86]*

Yeoh 2011[12]

0.13

[-1.06, 1.31]*

Vogelius 2013 [13]

-0.07

[-0.73 – 0.59]

Williams 2007 [14]

2.6

[0.9, 4.8]

Fowler 2001 [15]

1.49

[1.25, 1.76]

Brenner 2002 [16]

1.2

[0.03, 4.1]