Table 2.

RSBQ total and subscale mean scores, SDs, ranges and maximum scores

RSBQ	Mean (SD)	Range
Total (max = 90)	42.31 (14.85)	12 to 78
General mood (max = 16)	6.48 (3.98)	0 to 16
Breathing problems (max = 10)	5.05 (3.06)	0 to 10
Hand behaviours (max = 12)	8.44 (2.36)	1 to 12
Repetitive face movements (max = 8)	2.91 (1.94)	0 to 8
Body rocking and expressionless face (max = 12)	5.41 (2.23)	1 to 12
Night-time behaviours (max = 6)	1.74 (1.59)	0 to 6
Fear/anxiety (max = 8)	4.40 (2.24)	0 to 8
Walking/standing (max = 8)	1.31 (1.46)	0 to 4

RSBQ, rett syndrome behavioural questionnaire.