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Table 1 Overview on the event rate (with lower and upper limits, z value), weight and significance (p values) for conventional approach and random effect

From: Membrane perforation rate in lateral maxillary sinus floor augmentation using conventional rotating instruments and piezoelectric device—a meta-analysis

Conventional

Event rate

Lower limit

Upper limit

z value

p value

Weight

Galindo-Moreno et al. 2007 [15]

0.005

0.000

0.076

− 3.726

0.000

0.445

Marchetti et al. 2007 [16]

0.010

0.001

0.143

− 3.218

0.001

0.443

Delibasi et al. 2013 [67]

0.043

0.006

0.252

− 3.023

0.003

0.753

van den Bergh et al. 1998 [5]

0.048

0.016

0.140

− 5.033

0.000

1.507

Krekmanov et al. 1995 [17]

0.071

0.030

0.160

− 5.527

0.000

1.870

Watzek et al. 1998 [18]

0.100

0.038

0.238

− 4.169

0.000

1.683

Zijderveld et al. 2008 [19]

0.102

0.059

0.171

− 7.153

0.000

2.394

Papa et al. 2005 [20]

0.105

0.054

0.197

− 5.726

0.000

2.162

Rickert et al. 2011 [73]

0.111

0.042

0.261

− 3.921

0.000

1.673

Rickert et al. 2013 [10]

0.111

0.042

0.261

− 3.921

0.000

1.673

Lindenmüller and Lambrecht 2006 [21]

0.112

0.063

0.191

− 6.462

0.000

2.343

Penarrocha-Diago et al. 2012 [22]

0.125

0.048

0.289

− 3.640

0.000

1.661

Kaptein et al. 1998 [23]

0.159

0.097

0.251

− 5.713

0.000

2.438

Cha et al. 2014 [24]

0.161

0.118

0.216

− 8.932

0.000

2.765

Tawil et al. 2001 [25]

0.167

0.071

0.343

− 3.285

0.001

1.791

Yilmaz et al. 2012 [26]

0.172

0.098

0.284

− 4.746

0.000

2.305

Cho et al. 2001 [27]

0.184

0.098

0.317

− 4.043

0.000

2.178

van den Bergh et al. 2000 [28]

0.200

0.093

0.379

− 3.037

0.002

1.894

Becker et al. 2008 [68]

0.204

0.154

0.265

− 7.779

0.000

2.791

Ewers et al. 2005 [29]

0.206

0.156

0.266

− 7.894

0.000

2.801

Aimetti et al. 2001 [30]

0.214

0.100

0.402

− 2.821

0.005

1.881

Hernández-Alfaro et al. 2008 [69]

0.219

0.184

0.259

− 11.435

0.000

2.934

Barone et al. 2008 [31]

0.231

0.076

0.522

− 1.829

0.067

1.346

Khoury et al. 1999 [3]

0.241

0.188

0.302

− 7.217

0.000

2.831

Barone et al. 2006 [32]

0.250

0.182

0.334

− 5.297

0.000

2.701

Raghoebar et al. 2001 [33]

0.258

0.200

0.327

− 6.230

0.000

2.805

Kim et al. 2011 [34]

0.259

0.129

0.453

− 2.391

0.017

1.948

Shlomi et al. 2004 [35]

0.274

0.184

0.387

− 3.714

0.000

2.533

Wannfors et al. 2000 [36]

0.275

0.159

0.432

− 2.738

0.006

2.228

Hallman et al. 2004 [37]

0.300

0.164

0.483

− 2.127

0.033

2.080

Bornstein et al. 2008 [38]

0.305

0.201

0.433

− 2.911

0.004

2.466

Ardekian et al. 2006 [39]

0.318

0.238

0.411

− 3.723

0.000

2.709

Kazancioglu et al. 2013 [40]

0.320

0.169

0.522

− 1.758

0.079

1.982

Raghoebar et al. 1999 [41]

0.321

0.249

0.403

− 4.129

0.000

2.775

Philippart et al. 2003 [42]

0.333

0.158

0.571

− 1.386

0.166

1.761

Scarano et al. 2015 [43]

0.333

0.131

0.624

− 1.132

0.258

1.455

Oh et al. 2011 [44]

0.343

0.276

0.416

− 4.085

0.000

2.830

Raghoebar et al. 1997 [45]

0.346

0.250

0.455

− 2.731

0.006

2.623

Jensen et al. 1994 [46]

0.352

0.274

0.438

− 3.307

0.001

2.764

Froum et al. 2013 [47]

0.375

0.240

0.532

− 1.564

0.118

2.320

Stricker et al. 2003 [48]

0.379

0.271

0.501

− 1.950

0.051

2.560

Levin et al. 2004 [49]

0.468

0.362

0.578

− 0.562

0.574

2.648

Schwartz-Arad et al. 2004 [4]

0.469

0.364

0.578

− 0.555

0.579

2.657

Papa et al. 2009 [50]

0.511

0.371

0.649

0.146

0.884

2.437

Kasabah et al. 2003 [6]

0.562

0.480

0.640

1.486

0.137

2.812

Krennmair et al. 2007 [51]

0.575

0.420

0.717

0.945

0.345

2.343

Random

0.240

0.205

0.278

− 11.262

0.000