Table 3. Comparison of GSTT1 and GSTM1 null genotypes between male and female controls and patients. A p<0.05 was considered statistically significant.

	Controls			Patients
Genotypes	(Males) (n=85)	(Females) (n=77)	p (χ2)	(Males) (n=88)	(Females) (n=77)	p (χ2)
GSTT1 null	15 (18%)	1 (1%)	<0.001 (12.13)	19 (22%)	20 (26%)	>0.05 (0.44)
GSTM1 null	42 (49%)	16 (21%)	<0.001 (14.41)	43 (49%)	42 (55%)	>0.05 (0.53)