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Table 1 Characteristics of the dry eye subtypes

From: Quality of life measures and health utility values among dry eye subgroups

  Alla ADDE Short TBUT-DE
Number of patients (%) 449 (100%) 201 (44.8%) 108 (24.1%)
Age (y) 66.0 (52.0–75.0) 66.0 (55.0–75.0)* 63.5 (47.8–71.3)
Man: Woman 63: 386 30: 171 17: 91
TBUT 2.3 (1.7–3.7) 2.3 (1.7–8.3)* 3.0 (2.0–3.7)
Corneal staining score 3.0 (1.0–6.0) 3.0 (1.0–5.0)** 1.5 (0.0–4.0)
Keratoconjunctival staining score 3.0 (1.0–4.0) 3.0 (1.0–4.0)** 2.0 (1.0–2.3)
Schirmer test (mm) 6.0 (3.0–12.0) 4.0 (2.0–5.0)** 15.0 (9.0–25.0)
  1. Abbreviations: ADDE aqueous-deficient dry eye, TBUT tear film break-up time, TBUT-DE tear film break-up time dry eye
  2. Results are expressed as the median (interquartile range)
  3. *p <  0.05, **p <  0.01 (Mann–Whitney U test) for ADDE subtype versus short TBUT-DE subtype
  4. a“All” include 140 patients other than ADDE or short TBUT-DE subtypes, in addition to ADDE and short TBUT-DE subtypes
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