Table 2 Predictors of physical activity measured as average mean minutes of daily moderate to vigorous physical activity among adolescent boys, TREC IDEA and ECHO, 2006-2010

MVPA baseline

0.579

0.086

< .0001

0.564

0.095

< .0001

0.554

0.095

< .0001

0.547

0.099

< .0001

Study

-0.552

2.500

0.825

-0.520

2.614

0.842

-0.695

2.580

0.788

-1.074

2.702

0.691

White

3.785

4.623

0.413

3.072

4.660

0.510

3.211

4.606

0.486

3.866

4.557

0.396

College education

-1.234

2.721

0.650

-0.402

2.843

0.888

-0.337

2.792

0.904

-0.568

3.030

0.852

Free/reduced lunch

1.976

3.725

0.596

1.498

3.290

0.649

1.174

3.443

0.733

0.285

3.694

0.938

Age of student

3.150

1.208

0.009

3.296

1.175

0.005

3.132

1.184

0.008

3.268

1.181

0.006

Puberty

-3.265

2.847

0.251

-3.638

2.825

0.198

-3.752

2.814

0.182

-4.013

2.851

0.159

% Body Fat

-0.019

0.102

0.855

-0.013

0.109

0.907

-0.008

0.109

0.943

-0.063

0.126

0.616

PA Self-efficacy

0.719

0.272

0.008

0.680

0.276

0.014

0.752

0.279

0.007

PA enjoyment

0.070

0.246

0.776

0.069

0.244

0.778

0.013

0.247

0.957

PA barriers

0.047

0.231

0.839

0.037

0.227

0.870

-0.004

0.231

0.986

Daily min screen time

-0.001

0.004

0.801

-0.002

0.004

0.714

-0.002

0.004

0.692

Sport team participation

-3.105

2.464

0.208

-3.383

2.749

0.218

-3.506

2.813

0.213

PA: Parent support

-0.224

0.431

0.602

-0.246

0.422

0.561

PA Peer support

0.314

0.310

0.311

0.299

0.309

0.333

PA equipment Availability & Access Summary Score

0.004

0.011

0.718

Safety concerns

0.766

0.568

0.178

Ease of mobility

-0.063

0.475

0.895

Walkability Index

0.361

0.575

0.530