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Table 3 Factors of suicide attempts by Cox proportional hazard model analysis

From: Insomnia as an independent predictor of suicide attempts: a nationwide population-based retrospective cohort study

Variables

Crude HR

95% CI

P-value

Adjusted HR

95% CI

P-value

Insomnia

 no

reference

   

reference

   

 yes

7.416

6.524

8.431

< 0.001

3.533

3.059

4.080

< 0.001

Gender

 female

reference

   

reference

   

 male

1.289

1.159

1.433

< 0.001

1.522

1.361

1.702

< 0.001

Age group (years)

 ≧65

reference

   

reference

   

 15–24

6.477

5.292

7.928

0.001

6.000

4.876

7.383

< 0.001

 25–44

4.909

4.238

5.687

< 0.001

3.581

3.069

4.177

< 0.001

 45–64

1.747

1.487

2.052

< 0.001

1.595

1.357

1.876

< 0.001

Low income

 no

reference

   

reference

   

 yes

3.940

3.267

4.751

< 0.001

1.434

1.184

1.736

< 0.001

Catastrophic illness

 No

reference

   

reference

   

 Yes

1.972

1.771

2.196

< 0.001

1.286

1.143

1.446

< 0.001

Urbanization

 high

reference

   

reference

   

 medium

1.045

0.916

1.193

0.510

1.013

0.887

1.157

0.847

 low

1.569

1.372

1.795

< 0.001

1.073

0.937

1.230

0.309

CCI

0.983

0.969

0.998

0.025

0.989

0.973

1.005

0.179

Drug dependence

 no

reference

   

reference

   

 yes

9.614

7.407

12.479

< 0.001

1.592

1.220

2.077

0.001

Alcohol dependence

 no

reference

   

reference

   

 yes

5.872

4.899

7.038

< 0.001

1.164

0.955

1.420

0.133

Mental disorders

 no

reference

   

reference

   

 yes

9.742

8.723

10.879

< 0.001

4.483

3.934

5.109

< 0.001