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. 2023 Jul 14;23:320. doi: 10.1186/s12886-023-03077-y

Table 3.

The mean and changes of BCVA (LogMAR) in case and control groups in different follow ups

BCVA (LogMAR) Total (n = 101) Case (n = 49) Control (n = 52) Diff 95% CI P
Mean ± SD Median (range) Mean ± SD Median (range) Mean ± SD Median (range) Lower Upper
Pre 0.48 ± 0.31 0.4 (0 to 1.3) 0.52 ± 0.33 0.4 (0.05 to 1.3) 0.45 ± 0.28 0.4 (0 to 1.3) 0.07 -0.05 0.18 0.88
6 W 0.14 ± 0.23 0.08 (0 to 1.3) 0.07 ± 0.1 0.05 (0 to 0.4) 0.21 ± 0.29 0.1 (0 to 1.3) -0.13 -0.26 -0.01 0.198
12 W 0.14 ± 0.21 0.1 (0 to 1) 0.07 ± 0.07 0.05 (0 to 0.22) 0.2 ± 0.26 0.13 (0 to 1) -0.13 -0.25 -0.01 0.028
24 W 0.12 ± 0.19 0.05 (0 to 0.7) 0.14 ± 0.18 0.1 (0 to 0.7) 0.1 ± 0.2 0 (0 to 0.7) 0.04 -0.11 0.20 0.723
Pre-6 W -0.32 ± 0.32 -0.3 (-1 to 0.6) -0.42 ± 0.26 -0.4 (-1 to 0) -0.23 ± 0.34 -0.14 (-0.9 to 0.6) -0.19 -0.36 -0.02 0.295
P-Whitin§ < 0.001 < 0.001
Pre-12 W -0.32 ± 0.28 -0.3 (-1 to 0.48) -0.37 ± 0.25 -0.37 (-1 to 0.05) -0.27 ± 0.3 -0.28 (-0.9 to 0.48) -0.10 -0.27 0.07 0.655
P-Whitin§ < 0.001 < 0.001
Pre-24 W -0.33 ± 0.23 -0.3 (-0.9 to 0) -0.34 ± 0.21 -0.34 (-0.78 to 0) -0.31 ± 0.27 -0.26 (-0.9 to 0) -0.03 -0.22 0.16 0.152
P-Whitin§ < 0.001 0.004

BCVA, best corrected visual acuity; LogMAR, logarithm of the minimum angle of resolution; SD, standard deviation; w, weeks; Diff, difference; CI, confidence interval; P, probability

§Based on t-test

† Based on generalized linear mixed model (GLM)