Table 1.

Historical and Initial Clinical Characteristics of Adults with Non-paralytic strabismus (N=297) and Control Subjects (N=297)

Characteristic	Convergence Insufficiency			Divergence Insufficiency			Hypertropia
	Case (N=118)	Control (N=118)	P	Case (N=80)	Control (N=80)	P	Case (N=99)	Control (N=99)	P
Male, n (%)	50 (42.4)	50 (42.4)	1.00	28 (35.0)	28 (35.0)	1.00	36 (36.4)	36 (36.4)	1.00
Family history of psychiatric disease, n/N (%)	25/102 (24.5)	21/83 (25.3)	0.90	16/55 (29.1)	12/54 (22.2)	0.41	13/84 (15.5)	12/70 (17.1)	0.78
Family history of chemical abuse, n/N (%)	28/102 (27.5)	19/85 (22.4)	0.42	19/57 (33.33)	14/54 (25.9)	0.39	20/84 (23.8)	19/70 (27.1)	0.64
Median age at last follow up, years	82	82	0.76	85	83	0.39	82	82	0.32

P: p-value