significant differences in socioeconomic status (mean SES = 44.22 ± 11.8 SD for the CPFFS controls and mean = 45.99 ± 11.66 for the BRFFS controls), or in offspring rates of psychopathology in the two control groups (rates of “any” diagnosis was not significantly different [47.2% for CPFFS and 52.8% for the BRFFS]) allowing for the two control groups to be combined. (While these rates of “any disorder” may appear high for control samples, it should be noted that simple phobia and separation anxiety account for approximately two-thirds of the positive cases in childhood.) Because the likelihood of having any diagnosis was similar in both control groups, the present report is based on the offspring from both types of control families, included in an approximately equal number.
