@TechReport{iza:izadps:dp5306,
            	author={Frazis, Harley and Stewart, Jay},
            	title={How to Think About Time-Use Data: What Inferences Can We Make About Long- and Short-Run Time Use from Time Diaries?},
            	year={2010},
	month={Nov},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={5306},
            	url={https://www.iza.org/publications/dp5306},
	abstract={Time-use researchers are typically interested in the time use of individuals, but time use data are samples of person-days. Given day-to-day variation in how people spend their time, this distinction is analytically important. We examine the conditions necessary to make inferences about the time use of individuals from a sample of person-days. We also discuss whether and how surveys with multiple household members or multiple days are an improvement over single-diary surveys.},
	keywords={survey methods;estimation;time use},
            }