Table 3 Result of the multivariate ordinal logistic regression analysis

 No

Ref.

Ref.

Ref.

Ref.

 Yes

1.456**

1.163–1.823

1.537**

1.223–1.931

1.795**

1.410–2.286

1.800**

1.414–2.292

  ≤ 29

Ref.

Ref.

Ref.

 30–39

0.904

.685–1.193

0.780

0.581–1.047

0.785

0.585–1.055

  ≥ 40

0.308**

0.176–0.536

0.359**

0.195–0.659

0.372**

0.200–0.690

 3-year college

Ref.

Ref.

Ref.

 4-year college

1.096

0.857–1.401

1.122

0.866–1.454

1.130

0.872–1.464

 Master or higher

1.251

0.686–2.279

1.321

0.700–2.496

1.320

0.699–2.494

  < $20,000

Ref.

Ref.

Ref.

 $20,000–29,999

1.140

0.618–2.103

0.798

0.412–1.544

0.800

0.413–1.549

 $30,000–39,999

1.378

0.775–2.448

0.913

0.491–1.699

0.916

0.492–1.706

 $40,000–49,999

1.332

0.733–2.419

0.860

0.451–1.639

0.873

0.457–1.666

  ≥ $50,000

0.965

0.361–2.577

0.546

0.194–1.538

0.556

0.197–1.569

 Single

Ref.

Ref.

Ref.

 Married

1.691**

1.217–2.351

1.393

0.983–1.974

1.371

0.964–1.951

 Never

Ref.

Ref.

 Occasionally

0.759

0.543–1.062

0.759

0.543–1.062

 Frequently

0.572*

0.365–0.897

0.565*

0.360–0.887

 Normal (18.5–22.9)

Ref.

Ref.

 Underweight (< 18.5)

1.356

0.910–2.019

1.354

0.909–2.018

 Overweight(≥ 23)

1.087

0.821–1.440

1.084

0.818–1.435

 Poor

Ref.

Ref.

 Fair

0.457**

0.327–0.639

0.454**

0.325–0.635

 Good

0.317**

0.215–0.468

0.317**

0.214–0.467

 1 (least problem)

Ref.

Ref.

 2

2.821**

1.852–4.295

2.783**

1.823–4.246

 3

5.439**

3.511–8.425

5.341**

3.438–8.299

 4

12.494**

7.991–19.535

12.272**

7.823–19.253

 1 (least stress)

Ref.

Ref.

 2

2.094**

1.493–2.937

2.092**

1.492–2.934

 3

3.671**

2.583–5.217

3.650**

2.568–5.190

 4

7.346**

4.907–10.998

7.310**

4.882–10.945

 No

Ref.

 Yes

0.903

0.656–1.243

Nagelkerke R²

x²/df