TABLE 3 Marginal Effects for Predicted Probabilities of Poisson Model 3,,,,,, Variable name,Poisson model 3,,,,, ,One-unit change around the mean1,Marginal change1,,,, Household (HH) characteristics,,,,,, Vehicles in HH,–0.187,–0.187,,,, Bikes in HH,0.180,0.179,,,, Type housing unit,,,,,, Apart/condo,0.073,0.073,,,, Dorm,1.151,1.031,,,, Income HH,0.090,0.090,,,, Individual characteristics,,,,,, Age,–0.003,–0.003,,,, Female,–0.045,–0.045,,,, Driver,–0.177,–0.176,,,, Status,,,,,, Absent,0.205,0.204,,,, Looking,0.142,0.141 Full-time,–0.197,–0.196 Occupation,, Sales/service,–0.072,–0.072 Manuf/const/maint,–0.164,–0.164 Prof/manag/tech,0.221,0.220 Licensed,–0.281,–0.279 Distance-to-work,–0.010,–0.010 Walk-exercising,0.227,0.226 Med condition,–0.424,–0.416 Graduate,0.116,0.116 Attitudes/perceptions,, Traffic accidents (TA),, TA-No,–0.215,–0.214 Highway congestion (HC),, HC-Very,0.105,0.105 HC-Severe,0.246,0.244 Drunk drivers (DD),, DD-Severe,0.169,0.168 Price of gasoline (PG),, PG-No,0.246,0.245 PG-Severe,–0.128,–0.128 Walkways/sidewalks (WS),, WS-Little,0.145,0.144 WS-Somewhat,0.349,0.345 "Urban form, neighborhood design, and land-use attributes",, Ln(density),0.026,0.026 Connectivity,–0.608,–0.587 Diversity,0.278,0.276 Accessibility,–0.676,–0.647 Neighborhood sociodemographics,, Age in N,–0.003,–0.003 Race in N,0.469,0.459 1 Binary (0–1) dummy indicator variables correspond to a discrete change as the variable changes from 0 to 1.,,