“…Eight studies were cross-sectional survey studies , Eldevik et al 2013, GeigerBrown, Trinkoff, and Rogers 2011, Tucker et al 2010, one was a longitudinal survey study , three were intervention studies (where quick returns were reduced or abolished) (Hakola, Paukkonen, and Pohjonen 2010, Lowden et al 1998, five were field studies (data collection over time in natural settings) , Sallinen et al 2003, Signal and Gander 2007, Karhula et al 2013, Costa et al 2014, one was a field study which included laboratory assessments and one was a pure laboratory study (Cruz et al 2003), one was a registry study (analyzed objective records from an injury report database) (Macdonald et al 1997), and two studies labeled themselves as time-budget studies (i.e., they employed time-use diaries to identify activities occupying each hour of each day for a fixed period of time) (Knauth et al 1983, Kurumatani et al 1994. Most of the studies were based on self-report diaries and a mixture of standardized questionnaires and unstandardized questions , Eldevik et al 2013, Geiger-Brown, Trinkoff, and Rogers 2011, Lowden et al 1998, Karhula et al 2013, Sallinen et al 2003, Signal and Gander 2007, Cruz et al 2003, Kurumatani et al 1994, Knauth et al 1983, Hakola, Paukkonen, and Pohjonen 2010, Tucker et al 2010. Three studies used actigraphy recordings to monitor sleep and activity objectively (Axelsson et al 2004, Signal and …”