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Table 2 Univariate factor analysis of short sleep duration and long sleep duration

From: Social-biological influences on sleep duration among adult residents of Northeastern China

Factors

Short sleep duration

Long sleep duration

χ 2

OR

(95%CI)

χ 2

OR

(95%CI)

Sex

2.

18

  

5.

93*

  

 Male

  

1.05

(0.98, 1.13)

  

0.87

(0.78, 0.97)

 Female

  

1

   

1

 

Age

566.

10*

  

17.

57*

  

 Young

  

1

   

1

 

 Middle age

  

2.27

(2.10, 2.44)

  

0.86

(0.77, 0.97)

 Elderly

  

2.58

(2.33, 2.85)

  

1.17

(1.01, 1.34)

 Ethnicity

2.

44

  

6.

92*

  

 Han

  

0.90

(0.79, 1.03)

  

1.33

(1.08, 1.64)

 Others

  

1

   

1

 

Place of residence

9.

59*

  

66.

07*

  

 Urbanite

  

1.12

(1.04, 1.20)

  

0.63

(0.56, 0.70)

 Countryside

  

1

   

1

 

Marital status

187.

08*

  

2.

72

  

 Marriage /Cohabitation

  

1

   

1

 

 Unmarried

  

0.59

(0.51, 0.68)

  

1.12

(0.93, 1.34)

 Divorce/Divorcee/Separated spouse

  

1.75

(1.39, 2.19)

  

0.88

(0.56, 1.37)

 Widow/ Widower

  

2.18

(1.87, 2.50)

  

1.14

(0.89, 1.45)

Occupation

87.

80*

  

52.

45*

  

 Mental worker

  

1

   

1

 

 Manual worker

  

1.26

(1.15, 1.38)

  

1.70

(1.46, 1.98)

 Others

  

1.67

(1.50, 1.85)

  

1.83

(1.52, 2.21)

Educational level

180.

35*

  

125.

52*

  

 Primary school or below

  

1

   

1

 

 Junior middle school

  

0.68

(0.62, 0.75)

  

0.74

(0.64, 0.85)

 Senior middle school

  

0.73

(0.67, 0.81)

  

0.52

(0.45, 0.61)

 Undergraduate or above

  

0.48

(0.43, 0.54)

  

0.43

(0.36, 0.51)

Average monthly income (¥)

51.

70*

  

53.

30*

  

 < 500

  

1

   

1

 

 500-

  

0.77

(0.70, 0.84)

  

0.61

(0.53, 0.70)

 3000-

  

0.65

(0.57, 0.74)

  

0.60

(0.49, 0.75)

Cigarette smoking

63.

29*

  

0.

89

  

 Never

  

1

   

1

 

 Once

  

1.44

(1.28, 1.63)

  

1.07

(0.89, 1.30)

 Currently

  

1.30

(1.20, 1.40)

  

0.97

(0.86, 1.10)

Alcohol drinking

7.

81*

  

13.

04*

  

 No

  

1

   

1

 

 Yes

  

1.11

(1.03, 1.20)

  

0.80

(0.71, 0.90)

Dietary

30.

58*

  

3.

90*

  

 Irregular

  

1

   

1

 

 Regular

  

0.78

(0.71, 0.85)

  

0.87

(0.75, 0.99)

Physical exercise

95.

45*

  

40.

13*

  

 Never

  

1

   

1

 

 Sometimes

  

0.70

(0.64, 0.77)

  

0.70

(0.61, 0.81)

 Often

  

1.12

(1.03, 1.21)

  

0.70

(0.61, 0.79)

BMI

68.

11*

  

11.

94*

  

 Normal

  

1

   

1

 

 Underweight

  

0.66

(0.54, 0.81)

  

1.20

(1.08, 1.33)

 Overweight

  

1.21

(1.11, 1.30)

  

0.85

(0.75, 0.96)

 Obesity

  

1.34

(1.21, 1.49)

  

1.02

(1.01, 1.03)

Hypertension

147.

91*

  

1.

45

  

 No

  

1

   

1

 

 Yes

  

1.60

(1.48, 1.72)

  

1.08

(0.96, 1.21)

Diabetes

58.

15*

  

0.

001

  

 No

  

1

   

1

 

 Yes

  

1.41

(1.29, 1.53)

  

1.00

(0.86, 1.16)

Hyperlipidemia

1.

01

  

3.

33

  

 No

  

1

   

1

 

 Yes

  

1.04

(0.96, 1.23)

  

1.13

(0.99, 1.29)

CHD or MIa

69.

96*

  

7.

63*

  

 No

  

1

   

1

 

 Yes

  

1.68

(1.49, 1.90)

  

1.30

(1.08,1.57)

  1. *:P<0.05
  2. a:CHD Coronary Heart Disease, MI Myocardial Infarction
  3. 1:the reference cell