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. 2021 Mar 8;15:1041–1054. doi: 10.2147/OPTH.S296510

Table 6.

DED Sign Assessments in the Pre- and Post-Index Periods

Pre-Index n=600 3 Months (± 30 Days) Post-Index n=571 6 Months (± 30 Days) Post-Index n=534 12 Months (± 60 Days) Post-Index n=320
Corneal staining score [0–15]
Patients with documentation of sign assessment, n (% [95% CI]) 111 (18.5 [15.5, 21.8]) 14 (2.5 [1.3, 4.1]) 15 (2.8 [1.6, 4.6]) 31 (9.7 [6.7, 13.5])
 Mean ± SD [median] (95% CI of mean) 6.5 ± 3.9 [6.0] (5.8, 7.3) 2.7 ± 2.3 [2.0] (1.4, 4.0) 3.0 ± 3.0 [2.0] (1.3, 4.6) 2.0 ± 1.7 [2.0] (1.3, 2.6)
Schirmer score (mm)
Patients with documentation of sign assessment, n (% [95% CI]) 82 (13.7 [11.0, 16.7]) 5 (0.9 [0.3, 2.0]) 7 (1.3 [0.5, 2.7]) 17 (5.3 [3.1, 8.4])
 Mean ± SD [median] (95% CI of mean) 6.3 ± 10.8 [5.0] (3.9, 8.7) 10.6 ± 1.7 [11.0] (8.5, 12.7) 9.6 ± 2.8 [10.0] (7.0, 12.1) 10.0 ± 3.2 [9.0] (8.4, 11.6)
Tear film break up time (TFBUT)
Patients with documentation of sign assessment, n (% [95% CI]) 237 (39.5 [35.6, 43.5]) 36 (6.3 [4.5, 8.6]) 34 (6.4 [4.4, 8.8]) 46 (14.4 [10.7, 18.7])
 Mean ± SD [median] (95% CI of mean) 4.8 ± 3.1 [4.0] (4.4, 5.2) 7.3 ± 3.1 [7.5] (6.2, 8.3) 7.8 ± 2.1 [8.0] (7.0, 8.5) 8.0 ± 2.8 [8.0] (7.2, 8.8)
No sign assessment reported, n (% [95% CI]) 249 (41.5 [37.5, 45.6]) 522 (91.4 [88.8, 93.6]) 481 (90.1 [87.2, 92.5]) 248 (77.5 [72.5, 82.0])

Abbreviations: CI, confidence interval; DED, dry eye disease; SD, standard deviation; TFBUT, tear film break-up time.