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Table 4 Logistic regression analyses on associated risk for the existence both of circadian rhythm sleep disorder and insomnia

From: Prevalence and associated factors of circadian rhythm sleep-wake disorders and insomnia among visually impaired Japanese individuals

  

Possible circadian rhythm sleep-wake disorders (n = 52)

 

Possible insomnia (n = 45)

 

Crude

Adjusted

 

Crude

Adjusted

n=112a

OR

95% CI

P

OR

95% CI

P

n=105b

OR

95% CI

P

OR

95% CI

P

Age

  

1.02

0.99 - 1.05

0.06

    

1.00

0.98 - 1.03

0.82

   

Gender

Female

22/47

1.00

     

15/39

1.00

     

Male

30/66

0.89

0.45 - 2.01

0.95

   

30/66

1.33

0.60 - 2.99

0.49

   

Visual status

VI

9/38

1.00

     

23/50

1.00

     

BL

43/75

4.33

1.80 - 10.41

<0.01

   

22/55

0.78

0.36 - 1.70

0.54

   

Light perception

with

14/54

1.00

  

1.00

  

27/66

1.00

     

without

38/59

5.17

2.30 - 11.61

<0.01

8.61

3.01 - 24.66

<0.01

18/39

1.24

0.56 - 2.75

0.60

   

Social status

Employed/student

35/85

1.00

  

1.00

  

32/80

1.00

     

Unemployed

17/28

2.21

0.92 - 5.29

0.08

5.68

1.72 - 18.78

<0.01

13/25

1.63

0.66 - 4.01

0.29

   

Living alone

No

36/89

1.00

  

1.00

  

33/84

1.00

     

Yes

16/24

2.94

1.14 - 7.60

0.03

3.57

1.17 - 10.88

0.03

12/21

2.06

0.78 - 5.43

0.14

   

Disease currently treated

No

13/47

1.00

     

20/52

1.00

     

Yes

39/66

3.78

1.69 - 8.46

<0.01

   

25/53

1.43

0.66 - 3.11

0.37

   

Exercise habits

Yes

25/64

1.00

     

31/68

1.00

     

No

27/49

1.92

0.90 - 4.07

0.09

   

14/37

0.73

0.32 - 1.65

0.44

   

Use of hypnotics

No

35/91

1.00

  

1.00

  

34/88

1.00

  

1.00

  

Yes

17/22

5.44

1.84 - 16.07

<0.01

7.33

2.00 - 26.90

<0.01

11/17

2.91

0.99 - 8.60

0.05

2.91

0.99 - 8.60

0.05

  1. OR odds ratio, CI confidence interval, VI visual impairment, BL blindness
  2. aThe numerator indicates the number of visually impaired individuals with possible CRSWD (n = 52), and the denominator indicates the total number of individuals with possible CRSWD and those who had neither CRSWD nor insomnia symptoms (n = 60). bThe numerator represents the number of visually impaired individuals with possible insomnia (n = 45), and the denominator presents the total number of individuals with insomnia and those who had neither CRSWD nor insomnia symptoms (n = 60)
  3. In the logistic regression models, those without both possible CRSWD and possible insomnia (n = 60) were classified as controls