Table 4

First Stage Parameter Estimates from the Tobit Equations: Males (t ratios in parentheses)a

Independent Variables

Primary Eating Time

Secondary Eating Time

Secondary Drinking Time

Food Preparation Time

Physical Activity Time

Sleep Time

Television/video Time


Intercept

-1.59 (-.90)

-10.16 (-1.93)*

-30.00 (-2.04)**

-9.72 (-3.29)**

-19.45 (-1.66)*

49.95 (11.33)**

31.31 (4.97)**


Age

0.01 (.31)

-0.06 (-1.24)

-0.16 (-1.20)

0.07 (2.68)**

.22 (2.06)**

-0.18 (-4.51)**

0.09 (1.58)*


Married/Cohabitating

0.70 (3.85)**

-0.29 (-.54)

-0.73 (-.49)

0.89 (2.92)**

2.31 (1.89)*

-0.75 (-1.67)*

-1.21 (1.88)*


Education

0.23 (4.97)**

0.55 (3.94)**

1.68 (4.27)**

0.04 (.55)

-.48 (-1.54)

-0.62 (-5.42)**

-.97 (-5.90)**


Black

-2.04 (-9.80)**

0.56 (.92)

-9.13 (-5.23)**

0.34 (.97)

-4.67 (-3.26)**

0.72 (1.41)

1.68 (2.29)**


Hispanic

0.09 (.48)

-4.12 (-6.77)**

-16.61 (-9.40)**

-0.58 (-1.74)*

3.49 (2.73)**

2.07 (4.26)**

-.17 (.25)


Other

-0.06 (-.22)

-3.49 (-4.11)**

-11.36 (-4.75)**

0.97 (2.08)**

-.56 (-.29)

1.63 (2.36)**

-0.60 (-.61)


Occupation with METs > 3.3

0.47 (3.04)**

-2.64 (-5.63)**

-4.80 (-3.65)**

1.09 (4.25)**

34.97 (36.12)**

.12 (.33)

-1.72 (-3.16)**


Fair/Poor Health

-0.56 (-3.25)**

-1.55 (-2.94)**

-2.22 (-1.51)

-0.05 (-.18)

-4.57 (-3.97)**

1.42 (3.34)**

3.56 (5.87)**


Employed

-0.28 (-1.66)*

0.45 (.90)

0.81 (.58)

-1.37 (-4.95)**

-6.29 (-5.74)**

-3.37 (-8.11)**

-7.69 (-12.98)**


Grocery Price Index

0.01 (1.80)*

0.02 (.92)

-0.10 (-2.17)**

0.01 (1.36)

-.01 (-.23)

0.02 (1.44)

-0.03 (-1.58)


Weekend

0.56 (4.41)**

0.78 (2.12)**

-.88 (.86)

0.49 (2.32)**

3.57 (4.33)**

6.61 (21.13)**

7.40 (16.56)**


Primary Grocery Shopper

0.17 (1.26)

0.51 (1.25)

-0.05 (-.04)

0.78 (3.32)**

.62 (.67)

-0.71 (-2.06)**

-1.39 (-2.83)**


Primary Meal Preparer

-0.27 (-1.81)*

-0.18 (-.40)

-0.40 (-.32)

4.06 (16.07)**

-.54 (-.54)

0.05 (.14)

0.51 (.94)


Summer

-0.10 (-.73)

-0.10 (-.25)

0.37 (.34)

-0.36 (-1.60)

5.22 (6.07)**

0.58 (1.77)*

-1.06 (-2.27)**


ATUS07

0.12 (1.01)

1.26 (3.63)**

4.46 (4.63)**

0.82 (4.11)**

1.64 (2.09)**

0.19 (.66)

0.65 (1.56)


Hourly Opportunity Cost of time

0.00 (.05)

-0.08 (-1.38)

-.24 (-1.51)

0.04 (1.18)

.21 (1.67)*

0.14 (2.91)**

-0.11 (-1.54)


Ln (Non-Wage Income)

0.50 (1.77)*

0.19 (.23)

-1.99 (.85)

-0.16 (-.33)

-.17 (-.09)

1.64 (2.33)**

0.56 (.55)


Number of Kids < Age 6

0.15 (1.42)

0.27 (.87)

-.32 (-.37)

1.14 (6.57)**

1.85 (.2.67)**

-0.23 (-.88)

-1.80 (-4.79)**


Number of Kids Age 6-17

-0.17 (-2.67)**

0.04 (.24)

1.02 (1.95*

0.59 (5.45)**

.22 (.52)

-0.58 (-3.61)**

-1.24 (-5.39)**


*p < .10, **p < .05

a Time use is measured in 10 minute increments.

Zick et al. International Journal of Behavioral Nutrition and Physical Activity 2011 8:84   doi:10.1186/1479-5868-8-84

Open Data