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Table 1 Demographic characteristics of the psychometric validation study population (n = 210)

From: Development and validation of the impact of dry eye on everyday life (IDEEL) questionnaire, a patient-reported outcomes (PRO) measure for the assessment of the burden of dry eye on patients

Characteristics

Control

(n = 48)

Non-SS KCS*

(n = 130)

SS*

(n = 32)

Sex (n (%))

Male

13 (27)

27 (21)

3 (9)

Female

35 (73)

103 (79)

29 (91)

Age (Year)

Mean

39.2

55.2

58.3

Standard deviation

11.8

15.3

11.8

Range

20.0-66.0

22.0-89.0

34.0-80.0

Ethnicity (n (%))

Caucasian

34 (71)

106 (82)

31 (97)

African-American

6 (13)

12 (9)

1 (3)

Hispanic/Spanish-American

5 (10)

5 (4)

0 (0)

Asian/Oriental/Pacific Islands

1 (2)

6 (5)

0 (0)

Other

2 (4)

1 (1)

0 (0)

Highest level of education (n (%))

High school diploma or less

9 (19)

23 (18)

6 (19)

Some college

13 (27)

47 (36)

8 (25)

College degree

15 (31)

29 (22)

11 (34)

Graduate/postgraduate

8 (17)

31 (24)

5 (16)

Other

3 (6)

0 (0)

2 (6)

  1. * Non-SS KCS, Non Sjögren keratoconjunctivitis sicca; SS, Sjögren Syndrome [13]