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TABLE 1 Data Description and Summary Statistics

TABLE 1 Data Description and Summary Statistics

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Variable name Variable label/response category description Valid N Mean Std. Dev. Min. Max.
Dependent variables
Walking trips Number of walking trips on the surveyed day 2,934 0.80 1.48 0 12
Share walking % of walking trips with respect to all trips made on the survey day 2,934 0.19 0.34 0 1
Household (HH) characteristics
Vehicles in HH Number of vehicles in household per household member 2,934 0.53 0.47 0 4.5
Bikes in HH Number of full-size bicycles per household member 2,932 0.25 0.41 0 4
Type HU Type of housing unit (HU)          
Detached Detached single house 2,931 0.13 0.34 0 1
Duplex-triplex Duplex, triplex 2,931 0.02 0.15 0 1
Row/townhouse Row house, townhouse 2,931 0.62 0.49 0 1
Apart/condo Apartment, condominium 2,931 0.22 0.41 0 1
Dorm Dorm room, fraternity or sorority house 2,931 0.00 0.03 0 1
Semi Semi-attached/semi-detached house 2,931 0.00 0.04 0 1
Boat Boat 2,931 0.00 0.05 0 1
Owned Housing unit (= 1 owned, = 0 rented) 2,925 0.62 0.49 0 1
Income HH Household income (= 1 $30K or less, = 0 $30K and more) 2,934 0.27 0.45 0 1
Individual characteristics
Age Age (years) 2,891 41.26 22.61 0 96
Female Gender (= 1 female, = 0 male) 2,934 0.57 0.50 0 1
Driver Driver status (= 1 driver, = 0 nondriver) 2,933 0.58 0.49 0 1
Status Working/school status last week          
Working Working 2,933 0.44 0.50 0 1
Absent Temporarily absent from a job or business 2,933 0.03 0.16 0 1
Looking Looking for work 2,933 0.02 0.14 0 1
Homemaker A homemaker 2,933 0.04 0.21 0 1
Student Going to school 2,933 0.05 0.22 0 1
Retired Retired 2,933 0.21 0.40 0 1
Other Doing something else 2,933 0.06 0.24 0 1
Full-time Work status (= 1 full time, = 0 part time) 2,934 0.41 0.49 0 1
Occupation Occupation category          
Sales/service Sales or service 2,934 0.13 0.34 0 1
Clerical/admin Clerical or administrative support 2,934 0.07 0.25 0 1
Manuf/const/maint Manufacturing, construction, maintenance 2,934 0.05 0.22 0 1
Prof/manag/tech Professional, managerial, or technical 2,934 0.24 0.42 0 1
Transport Transportation/machine operator 2,934 0.00 0.05 0 1
Military Military 2,934 0.00 0.03 0 1
Other Police/firefighter/corrections officer 2,934 0.00 0.03 0 1
Licensed Drive licensed vehicle as part of work (= 1 yes, = 0 no) 2,934 0.07 0.25 0 1
Distance-to-work One-way distance to work (miles) 2,905 4.45 10.59 0 200
Walk-exercising Number of outside (exercising) walk trips in past week 2,919 0.24 0.66 0 7
Bike-exercising Number of outside (exercising) bike trips in past week 2,928 0.00 0.08 0 3
Med condition Medical condition makes travel out of home difficult
(= 1 yes, = 0 no)		 2,930 0.12 0.33 0 1
Graduate Highest grade of school completed (= 1 graduate, = 0 other) 2,923 0.15 0.36 0 1
Attitudes/perceptions
Traffic accidents (TA) Worry about traffic accident          
TA-No 1-Not a problem 2,922 0.05 0.21 0 1
TA-Little 2-A little problem 2,922 0.03 0.17 0 1
TA-Somewhat 3-Somewhat of a problem 2,922 0.03 0.17 0 1
TA-Very 4-Very much of a problem 2,922 0.01 0.10 0 1
TA-Severe 5-A severe problem 2,922 0.02 0.14 0 1
Highway congestion Worry about highway congestion (HC)          
HC-No 1-Not a problem 2,860 0.16 0.36 0 1
HC-Little 2-A little problem 2,860 0.09 0.29 0 1
HC-Somewhat 3-Somewhat of a problem 2,860 0.13 0.33 0 1
HC-Very 4-Very much of a problem 2,860 0.08 0.28 0 1
HC-Severe 5-A severe problem 2,860 0.10 0.30 0 1
Drunk drivers (DD) Worry about drunk drivers          
DD-No 1-Not a problem 2,913 0.05 0.21 0 1
DD-Little 2-A little problem 2,913 0.02 0.14 0 1
DD-Somewhat 3-Somewhat of a problem 2,913 0.01 0.12 0 1
DD-Very 4-Very much of a problem 2,913 0.01 0.12 0 1
DD-Severe 5-A severe problem 2,913 0.04 0.21 0 1
Price of gasoline (PG) Worry about price of gasoline          
PG-No 1-Not a problem 2,817 0.17 0.38 0 1
PG-Little 2-A little problem 2,817 0.09 0.29 0 1
PG-Somewhat 3-Somewhat of a problem 2,817 0.11 0.31 0 1
PG-Very 4-Very much of a problem 2,817 0.06 0.23 0 1
PG-Severe 5-A severe problem 2,817 0.12 0.32 0 1
Walkways/sidewalks Worry about poor walkways or sidewalks (WS)          
WS-No 1-Not a problem 2,922 0.09 0.28 0 1
WS-Little 2-A little problem 2,922 0.02 0.14 0 1
WS-Somewhat 3-Somewhat of a problem 2,922 0.01 0.11 0 1
WS-Very 4-Very much of a problem 2,922 0.01 0.07 0 1
WS-Severe 5-A severe problem 2,922 0.01 0.09 0 1
Urban form, neighborhood design, and land-use attributes
Ln(density) Household density at the census block-level
ln(1,000 HH units/mile2)		 2,857 15.21 14.07 0.00 121.85
Connectivity Street connectivity (census block's perimeter in miles) 2,934 0.34 0.26 0.07 3.01
Diversity Land-use mix diversity index at the census block-level 2,932 0.19 0.20 0.00 0.75
Accessibility Transit accessibility (distance in miles to the nearest bus transit stop) 2,934 0.08 0.06 0.05 0.35
Neighborhood sociodemographics
Age in N Median age of population at the census block-level 2,934 35.37 11.29 0 77.8
Race in N Proportion of white population at the census block-level 2,863 0.45 0.39 0 1.00