TABLE 1 Data Description and Summary Statistics,,,,,,
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