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Life-space levels as proposed in [29]. Life-space of 0 is limited to the bedroom; Life-space of 1 is limited to the home of the person; Life-space of 2 is limited to the immediate outside of the home; Life-space of 3 is limited to the neighborhood; Life-space of 4 is limited to the town where the person is living; Life-space of 5 is unlimited.
