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Table 5  Characteristics of Six Hypothetical Individuals

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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.