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Table 2 Characteristics of study in the endpoint

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

 

Total

With insomnia

Without insomnia

P-value

Variables

n

%

n

%

n

%

Total

479,967

100.0

159,989

33.3

319,978

66.7

 

Suicide attempts

      

< 0.001

 with

1395

0.3

1098

0.7

297

0.1

 

 without

478,572

99.7

158,891

99.3

319,681

99.9

 

Gender

      

0.880

 male

235,771

49.1

78,615

49.1

157,156

49.1

 

 female

244,196

50.9

81,374

50.9

162,822

50.9

 

Age group (years)

      

0.958

 15–24

15,901

3.3

5330

3.3

10,571

3.3

 

 25–44

99,058

20.6

33,030

20.6

66,028

20.6

 

 45–64

172,650

36.0

57,504

35.9

115,146

36.0

 

 ≧65

192,358

40.1

64,125

40.1

128,233

40.1

 

Low income

      

< 0.001

 yes

11,251

2.3

6441

4.0

4810

1.5

 

 no

468,716

97.7

153,548

96.0

315,168

98.5

 

Catastrophic illness

      

< 0.001

 yes

113,150

23.6

49,914

31.2

63,236

19.8

 

 no

366,817

76.4

110,075

68.8

256,742

80.2

 

Urbanization

      

< 0.001

 high

150,124

31.3

41,562

26.0

108,562

33.9

 

 medium

205,154

42.7

65,049

40.7

140,105

43.8

 

 low

124,689

26.0

53,378

33.4

71,311

22.3

 

CCI

2.36 ± 3.82

2.97 ± 4.10

2.06 ± 3.63

 

< 0.001

Drug dependence

      

< 0.001

 yes

2051

0.4

1597

1.0

454

0.1

 

 no

477,916

99.6

158,392

99.0

319,524

99.9

 

Alcohol dependence

      

< 0.001

 yes

7846

1.6

5674

3.5

2172

0.7

 

 no

472,121

98.4

154,315

96.5

317,806

99.3

 

Mental disorders

      

< 0.001

 yes

76,322

15.9

53,537

33.5

22,785

7.1

 

 no

403,645

84.1

106,452

66.5

297,193

92.9

 
  1. P-value (category variable: Chi-square/Fisher exact test; continue variable: t-test)