Table 2.

Frequency of aBAT in relation to gender.

Gender	No aBAT	%	aBAT	%	Σ
Male	n = 211	83.4	n = 42	16.6	253
Female	n = 223	81.1	n = 52	18.9	275
Σ	n = 434	82.2	n = 94	17.8	528