Table 1 Baseline characteristics of PD patients with and without dry eye for the period 1997–2011

Variables

n

(%)

n

(%)

p-value

Gender

< 0.001

 Women

41,594

(57.8)

2660

(72.6)

 Men

30,391

(42.2)

1005

(27.4)

Age, years

< 0.001

 Mean ± SD

< 0.001

  < 30

8402

(11.7)

77

(2.1)

 30–39

13,367

(18.6)

227

(6.2)

 40–49

15,213

(21.1)

494

(13.5)

 50–59

14,499

(20.1)

760

(20.7)

 60–69

8837

(12.3)

891

(24.3)

 ≧70

11,667

(16.2)

1216

(33.2)