Public Use Microdata Sample Files Technical Documentation Note 1 The definition for some variables in Chapter 6 (Data Dictionary) may not be easily found in Appendix B (Definitions of Subject Characteristics). Below is a list of the subjects that may be difficult to locate and the appropriate topic to refer to in Appendix B. Housing Record Type Appendix B Variable Description Topic Size of building See Units in Structure Year building built See Year Structure Built Cost of electricity (annual) See Utilities Cost of gas (annual) See Utilities Cost of water and sewer (annual) See Utilities Cost of oil, kerosene, or wood (annual) See Utilities Number of people 65 years and over in household See Household Type and Relationship Number of people under 18 years in Household See Household Type and Relationship Number of people in family See Household Type and Relationship Number of own children under 18 years in household See Household Type and Relationship Number of related children under 18 years in household See Household Type and Relationship Presence of subfamily in household See Household Type and Relationship Presence and age of own children under 18 years See Household Type and Relationship Presence and age of related children under 18 years See Household Type and Relationship Specified value indicator See Value Family type and employment status See Household Type and Relationship and see Employment Type Family type and work experience of householder See Household Type and Relationship and see Work Status in 1999 Person Record Type Appendix B Variable Description Topic Able to go out disability See Disability Status Military service See Veteran Status Years of military service See Veteran Status Vehicle occupancy See Journey to Work Layoff from job See Employment Status Absent from work See Employment Status Return-to-work recall See Employment Status Looking for work See Employment Status Back to work See Employment Status Hours per week in 1999 See Work Status in 1999 May 2003