Table 6. Descriptive statistics for parameters of DED in the study subgroups SS1, SS2 and Non-SS (NSS).
Data expressed as mean ± SD (minimum–maximum).
| Group | N | OSDI (0–100) | CFS (0–15) | TFBUT (sec) | ST (mm) |
|---|---|---|---|---|---|
| NSS | 32 | 40.1 ± 19.6 (12–84) |
1.0 ± 1.8 (0–6) b |
5.2 ± 3.1 (0–11) c |
17.3 ± 10.8 (2–35) b,c |
| SS1 | 57 | 48.0 ± 22.5 (0–91) |
2.4 ± 2.2 (0–8) a |
3.9 ± 2.3 (0–10) |
9.1 ± 9.9 (0–35) a |
| SS2 | 41 | 49.9 ± 20.4 (15–91) |
1.7 ± 1.6 (0–5) |
3.5 ± 2.5 (0–10) a |
10.5 ± 10.8 (0–42) a |
SS1 = Primary Sjögren’s syndrome; SS2 = Secundary Sjögren’s syndrome; Non-SS = Non Sjögren’s syndrome
OSDI = Ocular Surface Disease Index; CFS = Corneal Fluorescein Staining; LGCS = Lissamine Green Conjunctival Staining; TFBUT = Tear Film Break-Up Time; ST = Schirmer Test; TFOsm = Tear film Osmolarity
Kruskal–Wallis test with Dunn's multiple comparison post-hoc test.
Superscripted lowercase letters indicate statistical difference (p<0.05) vs nonSSa, SS1b, SS2c.