“…Various analysis techniques have been used by the researchers to study the effects of different lifestyle and sleep-related factors on the probability of drowsy driving and associated crash risk. For instance, Girotto et al (2016) and Sadeghniiat-haghighi et al (2016) used multinomial logistic regression and Häkkänen and Summala (2001), Meng et al (2015), Papadakaki et al (2008) and Tzamalouka et al (2005) used logistic regression. Chi-square test (Meng et al, 2015;Williamson & Friswell, 2013), Kruskal-Wallis test (Philip et al, 2002;Sabahiah et al, 2017), Spearmen correlation (Philip et al, 2002), factor analysis (McCartt et al, 2000;Sullman et al, 2002;Tsao, Chang, & Ma, 2017), multivariate analysis of covariance (MANCOVA) (Thompson & Stevenson, 2014) and Agent-Based Modeling (ABM) (Thompson et al, 2015) are also some of the commonly used analysis techniques.…”