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Table 3 Effect of BMI and lower extremity performance on incident life-space restriction (longitudinal analysis)

From: The effect of body mass index, lower extremity performance, and use of a private car on incident life-space restriction: a two-year follow-up study

 

Model 1

Model 2

Model 3a

Model 4a

Model 5a

HR

95% CI

HR

95% CI

HR

95% CI

HR

95% CI

HR

95% CI

Single effect

 BMI

   < 23

1.19

(0.72, 1.97)

  

1.03

(0.62, 1.70)

    

  23–25

1.00

   

1.00

     

  25–30

1.21

(0.80, 1.84)

  

1.07

(0.70, 1.62)

    

   ≥ 30

1.73

(1.05, 2.86)

  

1.65

(0.99, 2.75)

    

 Lower extremity performance

  Intact (SPPB 10–12)

  

1.00

 

1.00

     

  Impaired (SPPB 0–9)

  

2.44

(1.80, 3.32)

2.39

(1.75, 3.27)

    

Combined effect

 Intact LEP with BMI

   < 23

      

1.02

(0.54, 1.93)

1.00

(0.53, 1.89)

  23–25

      

1.00

 

1.00

 

  25–30

      

1.06

(0.61, 1.84)

1.06

(0.61, 1.83)

   ≥ 30

      

1.70

(0.88, 3.29)

1.78

(0.92, 3.47)

 Impaired LEP with BMI

   < 23

      

2.40

(1.16, 4.97)

2.03

(0.98, 4.22)

  23–25

      

2.50

(1.18, 5.29)

1.91

(0.90, 4.08)

  25–30

      

2.57

(1.46, 4.52)

2.77

(1.57, 4.87)

   ≥ 30

      

3.79

(1.84, 7.83)

3.57

(1.72, 7.38)

  Use of a private car

  Car driver

        

1.00

 

  Private car passenger

        

1.96

(1.27, 3.01)

  No use a private car

        

1.51

(0.87, 2.62)

  1. 581 people without life-space restriction at the baseline contributed 1033 person-years during two-year follow-up
  2. HR hazard ratio, CI confidence interval, BMI body mass index, LEP lower extremity performance, SPPB short physical performance battery
  3. aAdjusting for sex, age, chronic diseases, and education