The impacts of substance abuse and dependence on neuropsychological functions in a sample of patients from Saudi Arabia

Table 1 Age and level of education of patient and control groups

	Number of patients according to years of education					Mean age
Group	≤ 6 years	7-9 years	10-12 years	> 12 years	Age range	± SD
Alcohol	7	16	22	5	19-54	30.22 ± 8.35
Heroin	7	15	23	5	21-51	32.51 ± 9.22
Amphetamine	8	14	28	4	18-49	33.34 ± 7.14
All patients	22	45	73	14	18-54	33.16 ± 8.3
Control	14	29	49	8	18-50	31.24 ± 9.4

ISSN: 1744-9081