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Table 4 Multivariate logistic regression analysis of factors associated with long sleep duration

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

Factors

β

χ 2

P

OR

95% CI

Sex

 Male

−0.

176

3.

595

0.

058

0.

839

(0.700, 1.006)

 Female

0

     

1

  

Age

 Young

0

 

5.

853

0.

054

1

  

 Middle age

−0.

216

5.

595

0.

018

0.

806

(0.674, 0.964)

 Elderly

−0.

127

1.

081

0.

299

0.

881

(0.694, 1.119)

Ethnicity

 Han

0.

272

3.

177

0.

075

1.

312

(0.973, 1.769)

 Others

0

     

1

  

Place of residence

 Urbanite

0.

326

9.

952

0.

002

1.

386

(1.131, 1.697)

 Countryside

0

     

1

  

Occupation

 Mental worker

0

 

13.

321

0.

001

1

  

 Manual worker

0.

160

1.

264

0.

261

1.

174

(0.888, 1.552)

 Others

0.

538

10.

017

0.

002

1.

713

(1.227, 2.392)

Educational level

 Primary school or below

0

 

12.

837

0.

005

1

  

 Junior middle school

−0.

190

3.

230

0.

072

0.

827

(0.672, 1.017)

 Senior middle school

−0.

443

11.

895

0.

001

0.

642

(0.499, 0.826)

 Undergraduate or above

−0.

450

6.

741

0.

009

0.

607

(0.416, 0.885)

Average monthly earnings (¥)

  < 500

0

 

5.

201

0.

074

1

  

 500-

−0.

223

5.

093

0.

024

0.

800

(0.658, 0.971)

 3000-

−0.

153

0.

583

0.

445

0.

858

(0.579, 1.271)

Physical exercise

 Never

0

 

11.

150

0.

004

1

  

 Sometimes

−0.

025

0.

051

0.

821

0.

975

(0.782, 1.215)

 Often

−0.

300

9.

991

0.

002

0.

741

(0.616, 0.893)

BMI

 Normal

0

 

8.

822

0.

032

1

  

 Underweight

0.

129

0.

358

0.

550

1.

138

(0.745, 1.737)

 Overweight

−0.

234

6.

927

0.

008

0.

791

(0.664, 0.942)

 Obesity

−0.

034

0.

098

0.

754

0.

967

(0.781, 1.196)

  1. 1:the reference cell