Table 1 Statistical analysis of web-based responders and non-responders via during first year follow up from POLM study

Age

22.0

(4.2)

21.8

(4.1)

22.8

(4.7)

<.001

Gender

   Female

1233

(28.7%)

978

(28.1%)

255

(31.4%)

.056

   Male

3062

(71.3%)

2506

(71.9%)

556

(68.6%)

Race/Ethnicity

African

American

444

(10.3%)

367

(82.7%)

77

(17.3%)

.043

   Caucasian

3,094

(72.0%)

2,508

(81.1%)

586

(18.9%)

   Other

757

(17.7%)

609

(80.4%)

148

(19.6%)

Education

   High school or lower

1,952

(45.4%)

1,667

(85.4%)

285

(14.6%)

   Some college

1,955

(45.5%)

1,549

(79.2%)

406

(20.8%)

<.001

   Graduated from college or higher

388

(9.0%)

268

(69.1%)

120

(30.9%)

Income

   <$20,000

2,119

(49.3%)

1,750

(82.6%)

369

(17.4%)

.015

   $20,000 or more

2,176

(50.7%)

1,734

(79.7%)

442

(20.3%)

Military Status

   Active

2,518

(58.6%)

2,125

(84.4%)

393

(15.6%)

<.001

   Reserve

1,777

(41.4%)

1,359

(76.5%)

418

(23.5%)

Length of Service <5 months

2,684

(62.5%)

2,232

(83.2%)

452

(16.8%)

5 months - 1 year

964

(22.4%)

750

(77.8%)

214

(22.2%)

<.001

> 1 year

647

(15.1%)

502

(77.6%)

145

(22.4%)

Depression

(BDI)

6.4

(6.6)

6.5

(6.7)

6.0

(6.1)

.039

Fear of Pain

(FPQ)

18.1

(5.9)

18.0

(5.9)

18.2

(5.6)

.452

Back Beliefs

(BBQ)

43.4

(7.1)

43.3

(7.0)

44.0

(7.4)

.005

Anxiety

(STAI)

36.0

(9.2)

36.2

(9.2)

35.2

(9.1)

.004

Physical Health Status

(PCS Total)

53.4

(5.1)

53.4

(5.1)

53.5

(5.2)

.400

Mental Health Status

(MCS Total)

49.2

(8.6)

49.1

(8.7)

49.6

(8.0)

.099

Smoke Prior to Army

   No

2,756

(64.2%)

2,151

(78.0%)

605

(22.0%)

<.001

   Yes

1,539

(35.8%)

1,333

(86.6%)

206

(13.4%)

Company Instructor

   Alpha

621

(14.5%)

494

(14.2%)

127

(15.7%)

   Bravo

929

(21.6%)

766

(22.0%)

163

(20.1%)

   Charlie

607

(14.1%)

497

(14.3%)

110

(13.6%)

   Delta

957

(22.3%)

760

(21.8%)

197

(24.3%)

.256

   Echo

660

(15.4%)

531

(15.2%)

129

(15.9%)

   Foxtrot

521

(12.1%)

436

(12.5%)

85

(10.5%)

BMI

24.8

(3.2)

24.8

(3.2)

24.6

(3.2)

.027

Physical Examination

   No

3,924

(91.4%)

3,202

(81.6%)

722

(18.4%)

.009

   Yes

371

(8.6%)

282

(76.0%)

89

(24.0%)

Psychosocial Educational Program

(PSEP)

   No

2,301

(53.6%)

1,871

(81.3%)

430

(18.7%)

.726

   Yes

1,994

(46.4%)

1,613

(80.9%)

381

(19.1%)

Exercise Group

TEP only

1,212

(28.2%)

990

(28.4%)

222

(27.4%)

TEP+PSEP

945

(22.0%)

767

(22.0%)

178

(21.9%)

.932

CSEP only

1,089

(25.4%)

881

(25.3%)

208

(25.6%)

CSEP+PSEP

1,049

(24.4%)

846

(24.3%)

203

(25.0%)