Table 3.

Crude and Adjusted ORs and 95% CIs for Risk of Developing Psychiatric Disorders for the 4 Intelligence Subtests

	General Knowledge		Verbal IQ		Visuospatial Ability		Mechanical Ability
	Crude	Adjusteda	Crude	Adjusted	Crude	Adjusted	Crude	Adjusted
Psychoses	1.16 (0.97, 1.38)	0.92 (0.70, 1.22)	1.14 (0.96, 1.36)	0.91 (0.70, 1.20)	1.39 (1.15, 1.66)	1.33 (1.06, 1.68)	1.36 (1.13, 1.63)	1.30 (1.02, 1.65)
Depressive neuroses	1.05 (1.01, 1.10)	0.99 (0.93, 1.06)	1.04 (1.00, 1.08)	0.97 (0.91, 1.03)	1.10 (1.05, 1.15)	1.08 (1.02, 1.13)	1.10 (1.05, 1.15)	1.08 (1.03, 1.14)
Other neuroses	1.14 (1.11, 1.17)	1.08 (1.04, 1.12)	1.11 (1.08, 1.14)	0.98 (0.95, 1.02)	1.12 (1.09, 1.15)	1.03 (1.00, 1.06)	1.16 (1.13, 1.19)	1.10 (1.07, 1.14)
All neuroses	1.12 (1.10, 1.14)	1.06 (1.02, 1.09)	1.09 (1.07, 1.11)	0.98 (0.95, 1.01)	1.11 (1.09, 1.14)	1.04 (1.01, 1.07)	1.14 (1.12, 1.17)	1.10 (1.07, 1.13)
Personality disorder	1.27 (1.24, 1.31)	1.11 (1.06, 1.16)	1.25 (1.22, 1.29)	1.06 (1.01, 1.11)	1.24 (1.20, 1.27)	1.08 (1.04, 1.12)	1.25 (1.21, 1.29)	1.09 (1.05, 1.13)
Alcoholism	1.57 (1.45, 1.69)	1.39 (1.22, 1.57)	1.44 (1.33, 1.55)	0.98 (0.87, 1.10)	1.36 (1.25, 1.47)	1.02 (0.94, 1.12)	1.52 (1.40, 1.65)	1.23 (1.11, 1.36)
Drug dependence	1.14 (1.08, 1.21)	1.01 (0.93, 1.11)	1.14 (1.07, 1.20)	1.03 (0.93, 1.11)	1.08 (1.02, 1.14)	0.94 (0.87, 1.01)	1.26 (1.19, 1.33)	1.26 (1.17, 1.36)
Other diagnoses	1.30 (1.25, 1.34)	1.15 (1.08, 1.21)	1.29 (1.25, 1.34)	1.13 (1.07, 1.19)	1.20 (1.16, 1.24)	1.00 (0.97, 1.06)	1.23 (1.19, 1.27)	1.05 (1.00, 1.09)

Note: OR, odds ratio; CI, confidence.

^aAdjusted for the three other subtests. An OR of x is interpreted as the increase in risk for each successive IQ category. Because IQ score is coded on a 9-point scale for each subtest, the OR comparing the lowest IQ with highest IQ subjects is (x)⁹.