Table 3 Comparison of post-operative residual astigmatism prediction error at 2 diameter zones and subgroup analyses.

0.51 ± 0.46

0.46 ± 0.36

p = 0.799

0.09 ± 0.68 @87

0.09 ± 0.58 @25

p = 0.003*(x-axis); 0.123 (y-axis)

0.34 ± 0.24

0.38 ± 0.26

p = 0.250

0.07 ± 0.42 @ 8

0.12 ± 0.45 @ 19

p = 0.485 (x-axis); 0.031* (y-axis)

0.62 ± 0.50

0.53 ± 0.48

p = 0.413

0.32 ± 0.74 @88

0.07 ± 0.72 @ 52

p = 0.024* (x-axis); 0.479(y-axis)

0.70 ± 0.65

0.52 ± 0.32

p = 0.934

0.09 ± 0.96 @101

0.09 ± 0.61 @15

p = 0.002* (x-axis); 0.573(y-axis)