Table 7 Comparison of six formulas in different WTW subgroups.

WTW > 12 mm

BU II-TK

SRK/T-TK

Haigis-TK

Hoffer Q-TK

Holladay 1-TK

Holladay 2-TK

n = 50

MAE

0.323 ± 0.259

0.405 ± 0.327

0.403 ± 0.296

0.427 ± 0.358

0.461 ± 0.403

0.406 ± 0.355

SD

0.406

0.460

0.500

0.542

0.583

0.484

MedAE

0.259^{a #}

0.311

0.375*

0.330

0.318^d

0.290

BU II-K

SRK/T-K

Haigis-K

Hoffer Q-K

Holladay 1-K

Holladay 2-K

MAE

0.29 ± 0.253

0.39 ± 0.31

0.388 ± 0.278

0.406 ± 0.343

0.439 ± 0.392

0.378 ± 0.344

SD

0.385

0.448

0.48

0.524

0.567

0.467

MedAE

0.229^{b c #}

0.320

0.340*

0.285

0.327

0.287^e

WTW 11–12 mm

BU II-TK

SRK/T-TK

Haigis-TK

Hoffer Q-TK

Holladay 1-TK

Holladay 2-TK

n = 138

MAE

0.364 ± 0.373

0.417 ± 0.454

0.415 ± 0.41

0.474 ± 0.453

0.479 ± 0.464

0.439 ± 0.424

SD

0.521

0.615

0.584

0.656

0.668

0.610

MedAE

0.272^{f g #}

0.273

0.318

0.331

0.345*

0.320

BU II-K

SRK/T-K

Haigis-K

Hoffer Q-K

Holladay 1-K

Holladay 2-K

MAE

0.363 ± 0.379

0.427 ± 0.465

0.409 ± 0.403

0.465 ± 0.447

0.481 ± 0.471

0.44 ± 0.421

SD

0.526

0.632

0.575

0.646

0.674

0.609

MedAE

0.265^{h i #}

0.283

0.309

0.338

0.365*

0.328

WTW < 11 mm

BU II-TK

SRK/T-TK

Haigis-TK

Hoffer Q-TK

Holladay 1-TK

Holladay 2-TK

n = 24

MAE

0.367 ± 0.382

0.53 ± 0.376

0.404 ± 0.435

0.395 ± 0.441

0.436 ± 0.407

0.417 ± 0.467

SD

0.528

0.590

0.599

0.580

0.559

0.574

MedAE

0.274

0.464*

0.280

0.235^#

0.345

0.250

BU II-K

SRK/T-K

Haigis-K

Hoffer Q-K

Holladay 1-K

Holladay 2-K

MAE

0.321 ± 0.322

0.499 ± 0.328

0.357 ± 0.368

0.36 ± 0.387

0.398 ± 0.356

0.398 ± 0.406

SD

0.455

0.534

0.518

0.517

0.495

0.516

MedAE

0.271

0.472*

0.280

0.206^#

0.299

0.225