A total of 20 clients received SFBT. Eighteen clients
completed the therapy and two dropped out of
treatment (see ‘Reasons for dropout’ below). These
dropouts did not complete the measurements
directly after SFBT or at follow-up. Eighteen clients
received CAU. To rule out possible initial differences,
the two groups were compared for age, IQ
and adaptive functioning. No statistically significant
differences were found between these characteristics
(see Table 1). Moreover, no statistically significant
differences were found between the SFBT (n = 18,
excluding two dropouts) and the CAU group with regard to pre-treatment mean scores of relevant
measurements: IDQOL-16 [SFBT: 57.7 (SD = 6.7)
versus CAU: 61.4 (SD = 7.4); z = -1.6, P = 0.11],
RSMB [SFBT: 11.6 (SD = 7.4) versus CAU: 9.6
(SD = 8.6), z = -1.1; P = 0.26] and POS [SFBT:
29.3 (SD = 3.7) versus CAU: 29.5 (SD = 3.3);
z = -0.10, P = 0.93].