Table 5

Modeling the average number of minutes per day spent in each active activity and watching TV
Reading Singing Talking Watching TV
Predictors RR (95% CI) P value RR (95% CI) P value RR (95% CI) P value RR (95% CI) P value
Group
Intervention 1.4 (1.2-1.6) <0.0001 1.09 (0.94-1.25) 0.24 0.99 (0.89-1.1) 0.94 0.8 (0.6-1.0) 0.054
Control 1.0 1.0 1.0
Age of primary parent
Continuous variable

0.98

(0.97-0.98)

0.02

1.0

(0.99-1.02)

0.67

0.99

(0.98-0.99)

0.03

0.99

(0.97-1.02)

0.51
Income Level
Low (<60 K) 1.0 1.0 1.0 1.0
Medium (60–99) 1.1 (0.9-1.3) 0.27 1.05 (0.9-1.2) 0.5 0.99 (0.9-1.1) 0.83 0.8 (0.6-1.1) 0.11
High (100 & up) 1.1 (0.9-1.3) 0.33 1.04 (0.9-1.2) 0.67 0.9 (0.8-1.05) 0.22 0.8 (0.6-1.1) 0.23
Education Level
Less than/HS 1.0 1.0 1.0 1.0
College/Univ/Grad 1.3 (1.1-1.6) 0.01 0.96 (0.8-1.1) 0.65 1.02 (0.9-1.1) 0.82 0.8 (0.6-1.2) 0.36
Number of adults in home
One 1.0 1.0 1.0 1.0
Two or more 0.8 (0.6-1.2) 0.39 0.9 (0.6-1.4) 0.71 0.95 (0.7-1.3) 0.73 0.8 (0.4-1.8) 0.67
Baby’s age in months
Continuous variable 1.05 (1.02-1.07) 0.0001 1.0 (0.98-1.03) 0.68 1.05 (1.03-1.07) <0.0001 1.1 s(1.04-1.1) 0.006

Veldhuijzen van Zanten et al.

Veldhuijzen van Zanten et al. BMC Pediatrics 2012 12:100   doi:10.1186/1471-2431-12-100

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