Table 4

Construct validity analyses examining the associations between each subscale and the outcome variables

Television viewing time

Sedentary composite

Physical activity

Body mass index z score

β

p

Δ R2

B

p

Δ R2

β

p

Δ R2

β

p

Δ R2

Adolescent report

Electronics in home

.01

.93

.00

.13

.11

.02

.00

.99

.00

.15

.08

.02

TVs in the home

.17

.03

.03

.10

.19

.01

-.04

.59

.00

.08

.35

.01

Electronics in bedroom

.13

.12

.02

.22

.005

.05

.01

.92

.00

.19

.03

.03

Portable electronics

-.12

.13

.01

.16

.047

.02

.00

.98

.00

-.02

.84

.00

Activity equipment

-.21

.01

.04

.01

.91

.00

.22

.01

.04

-.10

.28

.01

Parent-report of Adolescents

Electronics in home

.03

.72

.001

.09

.27

.01

.05

.53

.00

.12

.17

.01

TVs in the home

.24

.00

.06

.19

.01

.04

-.03

.71

.00

-.02

.98

.00

Electronics in bedroom

.07

.39

.005

.14

.07

.02

.10

.24

.01

.17

.05

.03

Portable electronics

-.18

.03

.03

.11

.18

.01

.06

.47

.00

.06

.53

.00

Activity equipment

-.23

.003

.05

-.07

.35

.005

.20

.01

.04

.05

.53

.00

Parent-report of Children

Electronics in home

.29

.006

.07

.06

.54

.003

-.18

.09

.03

.09

.43

.01

TVs in the home

.39

.00

.15

.11

.24

.01

-.14

.15

.02

.10

.32

.01

Electronics in bedroom

.19

.11

.03

.12

.28

.01

-.04

.74

.00

.22

.08

.03

Portable electronics

.06

.58

.003

.13

.21

.01

-.07

.51

.004

.10

.36

.01

Activity equipment

-.23

.02

.05

-.16

.10

.02

.13

.18

.02

-.19

.07

.03

Note: Significant (p < .05) associations are in bold. Means adjusted for child age, gender, race/ethnicity, household income, and number of children living in the household.

Rosenberg et al. International Journal of Behavioral Nutrition and Physical Activity 2010 7:10   doi:10.1186/1479-5868-7-10