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Table 7 Multi-level regression analyses for power density from the first to the tenth finisher and from the first to the last finisher (Model 1) with correction for multiple finishes (Model 2) and age of the athletes with multiple finishes (Model 3)

From: Analysis of sex differences in open-water ultra-distance swimming performances in the FINA World Cup races in 5 km, 10 km and 25 km from 2000 to 2012

Model

ß

SE ( ß)

Stand. ß

T

p

Power density from the first to tenth finisher

5 km women

1

-0.251

0.156

-0.454

-1.610

0.139

2

-0.251

0.156

-0.454

-1.610

0.139

3

-0.231

0.208

-0.418

-1.113

0.295

5 km men

1

0.027

0.122

0.070

0.222

0.829

2

0.027

0.122

0.070

0.222

0.829

3

0.045

0.135

0.117

0.336

0.745

10 km women

1

0.097

0.150

0.212

0.650

0.532

2

0.097

0.150

0.212

0.650

0.532

3

0.160

0.164

0.348

0.974

0.359

10 km men

1

0.069

0.058

0.365

1.176

0.270

2

0.069

0.058

0.365

1.176

0.270

3

0.027

0.087

0.143

0.308

0.766

25 km women

1

0.023

0.276

0.026

0.082

0.936

2

0.023

0.276

0.026

0.082

0.936

3

0.057

0.290

0.066

0.197

0.848

25 km men

1

0.184

0.244

0.232

0.755

0.468

2

0.184

0.244

0.232

0.755

0.468

3

0.199

0.287

0.251

.0695

0.505

Power density from the first to last finisher

5 km women

1

-0.576

0.520

-0.330

-1.107

0.294

2

-0.576

0.520

-0.330

-1.107

0.294

3

-0.442

0.536

-0.254

-0.825

0.431

5 km men

1

-0.079

1.010

-0.025

-0.078

0.940

2

-0.079

1.010

-0.025

-0.078

0.940

3

-0.005

1.118

-0.002

-0.005

0.996

10 km women

1

-0.683

0.785

-0.279

-0.871

0.407

2

-0.683

0.785

-0.279

-0.871

0.407

3

-0.915

10.056

-0.373

-0.867

0.411

10 km men

1

-0.893

0.354

-0.644

-2.523

0.033

2

-0.893

0.354

-0.644

-2.523

0.033

3

-10.069

0.881

-0.770

-1.214

0.260

25 km women

1

0.860

0.428

0.537

20.013

0.072

2

0.860

0.428

0.537

20.013

0.072

3

0.861

0.453

0.537

1.901

0.090

25 km men

1

0.243

0.544

0.140

0.447

0.664

2

0.243

0.544

0.140

0.447

0.664

3

0.159

0.532

0.092

0.298

0.772