Figure 3: Mean urge to smoke and withdrawal ratings over 1 hour in abstainers during the morning and evening sessions, ratings of urge to smoke and withdrawal symptoms over 1 hour in the morning and evening session by product (E-cigarette/Stress Ball), in those who abstained (N=17). Product was used over first 5 minutes. Items were rated on 11-point scale: 0(not at all) to 10(extremely). Error bars represent SEM.