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Table 3 Agreement and correlation of prediction errors among five formulas across different devices

From: Assessing the interchangeability of keratometry measurements from four biometric devices in intraocular lens power calculations: insights into the predictive accuracy of five modern IOL formulas

Value

Mean

difference

(SD)

95% CI

95% LoA

LoA Width

ICC

95% CI

r

P value

BII

        

A vs. B

0.00 (0.17)

-0.03, 0.02

-0.34, 0.33

0.67

0.918

0.893, 0.938

0.919

< 0.001

A vs. C

0.00 (0.25)

-0.04, 0.04

-0.49, 0.49

0.98

0.839

0.792, 0.876

0.845

< 0.001

A vs. D

0.00 (0.32)

-0.05, 0.04

-0.62, 0.62

1.24

0.748

0.679, 0.804

0.756

< 0.001

B vs. C

0.00 (0.26)

-0.04, 0.04

-0.51, 0.51

1.02

0.833

0.784, 0.871

0.835

< 0.001

B vs. D

0.00 (0.34)

-0.05, 0.05

-0.67, 0.67

1.34

0.723

0.648, 0.784

0.727

< 0.001

C vs. D

0.00 (0.37)

-0.05, 0.05

-0.72, 0.72

1.44

0.700

0.621, 0.766

0.701

< 0.001

K6

        

A vs. B

0.00 (0.18)

-0.03, 0.02

-0.34, 0.34

0.68

0.909

0.880, 0.930

0.909

< 0.001

A vs. C

0.00 (0.25)

-0.04, 0.04

-0.49, 0.49

0.98

0.829

0.778, 0.868

0.835

< 0.001

A vs. D

0.00 (0.32)

-0.05, 0.05

-0.63, 0.63

1.26

0.740

0.668, 0.798

0.755

< 0.001

B vs. C

0.00 (0.26)

-0.04, 0.04

-0.51, 0.52

1.03

0.821

0.770, 0.863

0.824

< 0.001

B vs. D

0.00 (0.34)

-0.05, 0.05

-0.67, 0.67

1.34

0.719

0.643, 0.780

0.726

< 0.001

C vs. D

0.00 (0.37)

-0.05, 0.05

-0.73, 0.73

1.46

0.690

0.608, 0.757

0.691

< 0.001

EVO

        

A vs. B

0.00 (0.17)

-0.02, 0.02

-0.32, 0.32

0.64

0.923

0.899, 0.941

0.923

< 0.001

A vs. C

0.00 (0.24)

-0.03, 0.03

-0.47, 0.48

0.95

0.847

0.801, 0.882

0.851

< 0.001

A vs. D

0.00 (0.31)

-0.04, 0.04

-0.61, 0.61

1.22

0.761

0.694, 0.815

0.769

< 0.001

B vs. C

0.00 (0.25)

-0.04, 0.04

-0.50, 0.50

1.00

0.838

0.790, 0.876

0.839

< 0.001

B vs. D

0.00 (0.33)

-0.05, 0.05

-0.65, 0.65

1.30

0.735

0.662, 0.794

0.738

< 0.001

C vs. D

0.00 (0.36)

-0.05, 0.05

-0.70, 0.70

1.40

0.708

0.630, 0.772

0.707

< 0.001

Kane

        

A vs. B

0.00 (0.17)

-0.02, 0.02

-0.32, 0.32

0.64

0.924

0.900, 0.942

0.924

< 0.001

A vs. C

0.00 (0.24)

-0.03, 0.03

-0.48, 0.48

0.96

0.847

0.802, 0.883

0.851

< 0.001

A vs. D

0.00 (0.31)

-0.04, 0.04

-0.60, 0.60

1.20

0.769

0.705, 0.821

0.778

< 0.001

B vs. C

0.00 (0.26)

-0.04, 0.04

-0.50, 0.50

1.00

0.837

0.789, 0.874

0.838

< 0.001

B vs. D

0.00 (0.33)

-0.05, 0.05

-0.65, 0.65

1.30

0.741

0.671, 0.799

0.746

< 0.001

C vs. D

0.00 (0.36)

-0.05, 0.05

-0.71, 0.71

1.42

0.710

0.633, 0.774

0.711

< 0.001

DGS

        

A vs. B

0.00 (0.19)

-0.03, 0.03

-0.37, 0.37

0.74

0.897

0.865, 0.921

0.898

< 0.001

A vs. C

0.00 (0.27)

-0.04, 0.04

-0.52, 0.52

1.04

0.811

0.757, 0.855

0.819

< 0.001

A vs. D

0.00 (0.32)

-0.05, 0.05

-0.63, 0.64

1.27

0.739

0.667, 0.797

0.753

< 0.001

B vs. C

0.00 (0.26)

-0.04, 0.04

-0.52, 0.52

1.04

0.825

0.774, 0.865

0.827

< 0.001

B vs. D

0.00 (0.34)

-0.05, 0.05

-0.67, 0.67

1.34

0.722

0.647, 0.783

0.728

< 0.001

C vs. D

0.00 (0.37)

-0.05, 0.05

-0.73, 0.73

1.46

0.692

0.611, 0.759

0.692

< 0.001

  1. BII Barrett Universal II, K6 Cooke K6, EVO emmetropia verifying optical, DGS Pearl-DGS, SD standard error, CI confidence interval, LoA limits of agreement, ICC intraclass correlation coefficient, r Pearson coefficient, A = IOLMaster 700, B = CASIA2, C = Pentacam, D = iTrace
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BMC Ophthalmology

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