Table 2

Odds ratios (OR) and 95% confidence intervals (95%CI) for the associations between socio-demographic, built environmental, and behavioral correlates of achieving pedometer-based cut-points

Main effects

Main effects + interactions


Variables

%

OR

95%CI

OR

95%CI


Socio-demographic

Home ownership*

Renting

25.7

1.11

0.80, 1.54

1.11

0.80, 1.56

Owned/purchasing

26.0

Ref.

Ref.

Marital status*

Married/defacto

25.5

1.00

0.59, 1.69

0.98

0.58, 1.66

Other

27.2

Ref.

Ref.

Dependents at home <18 yrs*

One child

29.9

1.39

0.87, 2.21

1.42

0.89, 2.26

≥2 children

25.3

Ref.

Ref.

Sex

Male

19.1

0.42

0.31, 0.58Φ

0.03

0.01, 0.79Φ

Female

31.6

Ref.

Ref.

Grade of student

Grade 5

28.1

1.12

0.81, 1.54

1.12

0.81, 1.55

Grade 6

26.1

0.86

0.63, 1.18

0.90

0.65, 1.25

Grade 7

24.0

Ref.

Ref.

Highest education completed by any parent*

≤High school

24.0

1.25

0.73, 2.13

1.28

0.77, 2.13

Diploma/trade/other

26.2

1.36

0.94, 1.97

1.38

0.95, 2.03

≥Bachelor degree

27.1

Ref.

Ref.

Dog ownership*

Owner

26.1

1.08

0.75, 1.55

1.07

0.74, 1.53

Non-owner

25.6

Ref.

Ref.

Child has friends in the neighborhood

Many friends

27.8

1.04

0.73, 1.49

1.02

0.70, 1.47

Few friends

21.7

Ref.

Ref.

Sedentary and active leisure-time behavior

Screen-based activity time*

<2 hours/day

35.7

1.88

1.30, 2.73Φ

1.89

1.29, 2.78Φ

≥2 hours/day

22.2

Ref.

Ref.

Leisure physical activity index [min. = 0, max. = 7]^

1.08

0.95, 1.36

1.08

0.95, 1.22

Average steps within grade (500 step increments) [min. = 7779.31, max. = 14588.97]^

1.29

1.22, 1.36Φ

1.21

1.13, 1.31Φ

Independent mobility and transportation to school

Play in any street, park, or go for walk without an adult*

No

22.3

0.71

0.44, 1.14

0.73

0.45, 1.18

Yes

26.5

Ref.

Ref.

Child usually driven to and from school

No

21.0

1.48

1.08, 2.04Φ

1.44

1.04, 2.00Φ

Yes

33.0

Ref.

Ref.

Self-reported neighborhood environment

Have to drive child to park with suitable equipment

Yes

27.1

0.99

0.72, 1.35

0.98

0.72, 1.33

No

23.7

Ref.

Traffic in neighborhood [min. = 1, max. = 5]*

0.96

0.80, 1.15

0.97

0.81, 1.16

Friendliness of neighborhood [min. = 1, max. = 5]*

1.15

0.94, 1.41

1.18

0.94, 1.47

Distance to nearest friends house from home*

>10 minute walk

20.4

0.62

0.47, 0.82Φ

0.60

0.46, 0.78Φ

≤10 minute walk

29.3

Ref.

Ref.

Distance to nearest relatives house from home*

>10 minute walk

26.1

1.05

0.61, 1.80

1.66

0.97, 2.85

≤10 minute walk

25.0

Ref.

Ref.

Count of different destinations within a 10 minute walk of home [min. = 0, max. = 13]*

0.93

0.88, 0.99Φ

0.93

0.88, 0.99Φ

Neighborhood walkability and socioeconomic status

School neighborhood walkability score

High

28.6

1.01

0.75, 1.35

1.00

0.74, 1.35

Low

23.6

Ref.

Ref.

School neighborhood socioeconomic status

High

29.6

1.33

1.06, 1.67Φ

1.36

1.11, 1.68Φ

Medium

25.0

1.15

0.82, 1.60

1.15

0.82, 1.60

Low

20.7

Ref.

Ref.

Sex-specific interactions

Sex by dist. relatives house within 10-min walk

0.27

0.15, 0.47Φ

Sex by average steps within grade

1.17

1.02, 1.34Φ


Φ p < 0.05. Ref.: reference category. * Indicates data collected from parent questionnaire; Pedometer-based cut-points: ≥12000 steps/day for girls and ≥15000 steps/day for boys. ^ Parameter estimates represent linear associations between the variable and pedometer-based physical activity. All estimates adjusted for school-level clustering

McCormack et al. International Journal of Behavioral Nutrition and Physical Activity 2011 8:30   doi:10.1186/1479-5868-8-30

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