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Table 4 Odds ratios to predict stability of physical activity levels. Pooled analysis

From: Tracking of accelerometry-measured physical activity during childhood: ICAD pooled analysis

   

Weekday/weekend combined

Weekday

Weekend

 

Predictor

Outcome

Boys

Girls

Boys

Girls

Boys

Girls

    

Odds ratio (95% confidence interval)

MVPA model

Age at follow-up (years)

<20%tilea

1.1 (1.1, 1.2)

1.1 (1.0, 1.2)

1.1 (1.0, 1.2)

1.0 (1.0, 1.1)

1.2 (1.1, 1.3)

1.1 (1.0, 1.2)

  

20- < 80%tilea

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

  

≥80%tilea

1.0 (0.9, 1.0)

0.9 (0.9, 1.0)

1.0 (1.0, 1.1)

0.9 (0.9, 1.0)

1.0 (0.9, 1.0)

0.9 (0.8, 0.9)

 

Follow-up duration (years)

<20%tilea

1.1 (1.0, 1.3)

1.1 (0.9, 1.2)

1.1 (0.9, 1.3)

1.1 (0.9, 1.3)

1.3 (1.1, 1.6)

1.0 (0.9, 1.3)

  

20- < 80%tilea

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

  

≥80%tilea

0.9 (0.8, 1.1)

0.9 (0.8, 1.0)

1.0 (0.8, 1.2)

0.9 (0.8, 1.1)

0.8 (0.7, 1.0)

0.8 (0.6, 0.9)

 

<20%tileb

<20%tilea

3.4 (2.7, 4.3)

2.6 (2.1, 3.3)

2.7 (2.1, 3.4)

2.8 (2.3, 3.6)

1.8 (1.4, 2.3)

1.9 (1.4, 2.4)

 

20- < 80%tileb

20- < 80%tilea

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

 

≥80%tileb

≥80%tilea

2.9 (2.3, 3.6)

2.4 (1.9, 3.0)

2.5 (2.0, 3.2)

1.6 (1.2, 2.0)

1.9 (1.4, 2.5)

1.7 (1.3, 2.2)

VPA model

Age at follow-up (years)

<20%tilec

1.0 (1.0, 1.1)

1.1 (1.0, 1.1)

1.0 (1.0, 1.1)

1.1 (1.0, 1.1)

1.1 (1.1, 1.2)

1.1 (1.1, 1.2)

  

20- < 80%tilec

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

  

≥80%tilec

1.0 (1.0, 1.1)

1.0 (0.9, 1.0)

1.0 (1.0, 1.1)

1.0 (0.9, 1.0)

1.0 (0.9, 1.0)

0.9 (0.9, 1.0)

 

Follow-up duration (years)

<20%tilec

1.1 (0.9, 1.3)

1.0 (0.9, 1.2)

1.0 (0.9, 1.2)

1.1 (0.9, 1.3)

1.4 (1.1, 1.7)

1.2 (1.0, 1.4)

  

20- < 80%tilec

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

  

≥80%tilec

1.0 (0.8, 1.2)

1.0 (0.8, 1.1)

1.0 (0.8, 1.2)

1.0 (0.8, 1.1)

0.9 (0.7, 1.1)

0.9 (0.7, 1.0)

 

<20%tiled

<20%tilec

2.4 (1.9, 3.0)

2.5 (2.0, 3.2)

2.1 (1.6, 2.6)

2.6 (2.1, 3.2)

1.8 (1.4, 2.3)

1.8 (1.4, 2.4)

 

20- < 80%tiled

20- < 80%tilec

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

 

≥80%tiled

≥80%tilec

3.9 (3.1, 4.9)

1.9 (1.5, 2.4)

3.9 (3.1, 5.0)

1.8 (1.4, 2.2)

1.8 (1.3, 2.3)

1.3 (1.0, 1.7)

  1. aMVPA at follow-up; bMVPA at baseline; cVPA at follow-up; dVPA at baseline.
  2. MVPA, moderate- to vigorous-intensity physical activity; VPA, vigorous-intensity physical activity.
  3. All analyses were weighted based on the sample size of each cohort.
  4. Gender- and type of day-specific multinomial logistic regression model: follow-up [M]VPA (<20%tile, 20- < 80%tile, and ≥80%tile; reference group: 20- < 80%tile) = centered age at follow-up (years) + follow-up duration (years) + baseline [M]VPA (<20%tile, 20- < 80%tile, and ≥80%tile; reference group: 20- < 80%tile).