Table 2 Psychiatric disorder conditions as defined by ICD-9-CM in PD patients with and without dry eye for the period 1997–2011

Psychiatric disorder condition

(ICD-9-CM)

n

(%)

n

(%)

p-value

Dementia

(290, 331.0, 331.2)

7426

(10.3)

534

(14.6)

< 0.001

Alcoholic psychoses

(291)

1707

(2.4)

35

(1.0)

< 0.001

Drug psychoses

(292)

1339

(1.9)

38

(1.0)

< 0.001

Schizophrenia

(295)

4242

(5.9)

151

(4.1)

< 0.001

Bipolar disorder

(296)

2968

(4.1)

267

(7.3)

< 0.001

Major depression

(296.2, 296.3)

17,001

(23.6)

1180

(32.2)

< 0.001

Paranoid states

(297)

1822

(2.5)

90

(2.5)

0.777

Neurotic disorders

(300)

59,528

(82.7)

3400

(92.8)

< 0.001

Obsessive-compulsive disorders

(300.3)

2059

(2.9)

109

(3.0)

0.687

Minor depression

(300.4, 309.0, 309.1, 311)

38,542

(53.5)

2382

(65.0)

< 0.001

Mild mental retardation

(317)

1136

(1.6)

17

(0.5)

< 0.001

Other specified mental retardation

(318)

949

(1.3)

4

(0.1)

< 0.001

Unspecified mental retardation

(319)

1266

(1.8)

16

(0.4)

< 0.001