Table 2.

- Cohort performance in IQ assessment classified into low and normal IQ (N=50).

IQ classes	Low IQ	Normal IQ
Full scale	6 (12)	44 (88)
Verbal
Fluid reasoning	3 (6)	47 (94)
Knowledge	6 (12)	44 (88)
Quantitative reasoning	5 (10)	45 (90)
Visual spatial	19 (38)	31 (62)
Working memory	12 (24)	38 (76)
Non-verbal
Fluid reasoning	6 (12)	44 (88)
Knowledge	12 (24)	38 (76)
Quantitative reasoning	3 (6)	47 (94)
Visual spatial	9 (18)	41 (82)
Working memory	8 (16)	42 (84)

Values are presented as numbers and percentages (%). IQ: intelligence quotient