Predictors for altering caffeine consumption during stress.

The present study investigated whether or not those who self-report increasing use of caffeine when under stress consume caffeine more for the drug (e.g., stimulant) effects. A three-part questionnaire assessing demographic information, caffeine use patterns, and reasons for use was completed by 182 females and 106 males (mean age, 22.4 years; range, 9 to 59). Consistent with earlier research, nearly 50% of the sample reported increasing consumption of coffee or soft drinks when under stress. Hierarchical multiple regression analyses showed drinking for relief reasons as the most consistent predictor for altering caffeine use when under stress. Understanding differences in use patterns will likely help strengthen the ability to describe the extent to which caffeine use contributes to cardiovascular and other disorders.