intensity reported during that month. There was a modest and inverse correlation between preinter- vention self-efficacy scores and frequency of guided imagery use (r = −0.481, P = 0.03). At the end of the study, frequency of use correlated positively at a trend level with change scores for self-efficacy; that is, the greatest increases in self-efficacy scores were seen in those children who used guided imagery more often (r = 0.43, P = 0.06).