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Table 4 Multivariable logistic regression of the risk factors for knee osteoarthritis in the entire study population (both sexes combined)

From: Prevalence and factors associated with knee osteoarthritis among middle-aged and elderly individuals in rural Tianjin: a population-based cross-sectional study

Variables

Reference

OR

95% CI

P value

Sex

Male

   

 Female

 

1.764

1.291–2.409

< 0.001

Age

 < 55 years

   

 55–64 years

 

2.913

2.123–3.997

< 0.001

 65–74 years

 

2.784

1.959–3.956

< 0.001

 ≥ 75 years

 

3.439

1.999–5.917

< 0.001

BMI

Normal

   

 Over weight

 

1.509

1.172–1.943

0.001

 Obesity

 

2.235

1.653–3.021

< 0.001

Sleep situation

Satisfy

   

 Not bad

 

1.677

1.265–2.224

< 0.001

 Insufficient

 

1.978

1.410–2.776

< 0.001

Often walk

No

   

 Yes

 

1.572

1.255–1.968

< 0.001

Education

Illiterate

   

 Primary level

 

0.805

0.570–1.137

0.219

 Elementary level

 

0.619

0.430–0.891

0.010

 High school

 

0.846

0.549–1.303

0.448

 ≥ College

 

–

–

–

Smoking

Never smoking

   

 Ex-smoker

 

0.660

0.319–1.368

0.264

 Current smoker

 

0.717

0.485–1.059

0.094

Drinking

Never drinking

   

 Ex-drinker

 

1.568

0.653–3.768

0.314

 Current drinker

 

1.280

0.867–1.890

0.215