2.3. Data Processing

The ATUS has been continuously run since 2003. For this article, only pooled data from 2015 to 2017 comprising 31,621 respondents from a designated sample of 69,838 were used. The configuration of the ATUS database and corresponding survey response rates from 2015 to 2017 is presented in Table 2.

Configuration of the American Time Use Survey (ATUS) database from 2015 to 2017.

¹ Includes holidays that fell on weekdays. Designated sample size was calculated from ATUS case file data and excluded noneligible participants. The ATUS response rate was calculated using the American Association for Public Opinion Research’s (AAPOR’s) formula as follows: Response rate = C/(C + R + NC + O + UE); where C = Completes (complete or sufficient partial interview), R = Refusals, NC = Noncontact (uncompleted callbacks; never contacted), O = Other (respondent absent, ill, or hospitalised; language barrier, etc.), and UE = Unknown eligibility (phone number incorrect for household, unconfirmed number, etc.).