Table 3.

Description of time use surveys

Survey	Year	Administrator (funding)	No. of observations	Response rate (%)	Field work period, other notes
Americans’ Use of Time	1975	Survey Research, University of Michigan (NSF, US Department Health, Education, and Welfare)	2,394	72	October 1975–November 1976, targeted adult (18+ y) population. Panel survey with four waves, the first wave included here
Americans’ Use of Time	1985	Survey Research, University of Michigan (NSF, AT&T)	4,939	51	January 1985–December 1985, targeted past secondary school age (10+ y) population. Only 18 y or older are included in this study
National Human Activity Pattern Survey	1993	Survey Research Center, University of Maryland (US EPA)	7,322	63	September 1992–October 1994, targeted individuals of any age. Only 18 y or older are included in this study
ATUS	2003	Bureau of Labor Statistics	19,759	58	Continuous throughout the year, targeted 15 y or older population. Only 18 y or older are included in this study
ATUS	2007	Bureau of Labor Statistics	11,606	53	Continuous throughout the year, targeted 15 y or older population. Only 18 y or older are included in this study

Total number of observations is 46,020. NSF, AT&T, and US EPA denote the National Science Foundation, American Telephone and Telegraph Company, and the US Environmental Protection Agency, respectively.