Table 5 Characteristics of Six Hypothetical Individuals,,,,,,,,,, Person number,Male,Female,Young,"Middle age","Low income","High income",Single,Single parent,"Couple, no child",Activity freq-uency1 1,1,,1,,1,,1,,,2 2,1,,1,,,1,1,,,5 3,,1,1,,1,,,1,,3 4,,1,1,,,1,,1,,6 5,1,,,1,1,,,,1,3 6,1,,,1,,1,,,1,6 1 Activity frequency refers to the number of out-of-home nonwork activities undertaken by an individual in a day including return-home sojourns. These frequencies were obtained from a Poisson regression model of activity frequency not presented in this paper.,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,,