Age groups and birth cohorts are also important issues. Older adults are not a homogeneous population. While often characterized as being age 60+ or age 65+, they range widely in age, were born into different generations, and may drink differently based on those factors (Keyes and Miech, 2013; Kerr et al., 2009; Kerr et al., 2012; Moore et al., 2005; Zhang et al., 2008).
