Higher exposure to college environmental factors
meant, in most cases, more frequent, and more abusive
drinking (Table 2, Model 1). These risk factors were, in
general, more important for excessive drinking than for
frequency of drinking. For each additional year spent at
the university, drinking became more frequent and the
frequency of abusive drinking increased (OR = 1.11).
Compared with not living on the campus, living on the
campus meant more frequent and more abusive drinking
behaviour (OR = 1.56). The greater the number of roommates,
the higher the risk of frequent and abusive drinking
behaviour. Each additional room-mate increased the
frequency of abusive drinking by 6%. There was one