Table 4. Evaluation of the difficulty of questions of the self-BAT.

	Number of patients	% of patients
Very difficult	3	1.9
Difficult	2	1.3
Satisfactory	46	29.5
Easy	57	36.5
Very easy	48	30.8
Total	156	100.0

Abbreviation: self-BAT, self-administered ISTH-BAT.