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. 2019 Aug 8;19:174. doi: 10.1186/s12886-019-1191-1

Table 1.

Characteristics of participants in sociodemographic factors, visual acuity, duration of treatment, and comorbidities

AMD,
n = 145
DME,
n = 26
RVO,
n = 32
P-value
Age, mean (SD) 77.4 (7.4) 61.8 (13.0) 74.5 (9.9) < 0.001a
Gender, n (%)
 Female, n (%) 94 (64.8) 7 (26.9) 17 (53.1) 0.001b
 Male, n (%) 51 (35.2) 18 (73.1) 15 (46.9)
 Visual acuity in best eye, ETDRS, median (IQR) 80.0 (72–85) 75.5 (65–85) 82.5 (74–85) 0.246c
 Visual acuity in best eye, LogMAR, median (IQR) 0.1 (0.0–0.3) 0.2 (0.0–0.4) 0.0 (0.0–0.2)
 Treatment duration in years, median (range) 2 (0–11) 2 (0–6) 1 (0–5) 0.014c
Classes of municipalities 0.749d
 Urban 45 (31.0) 6 (23.1) 11 (34.4)
 Intermediate 56 (38.6) 9 (34.6) 9 (28.1)
 Rural 38 (26.2) 9 (34.6) 10 (31.3)
 Peripheral 6 (4.1) 2 (7.7) 2 (6.3)
Education level, n (%) 0.007d
 Long-cycle higher education 9 (6.3) 5 (19.2) 0 (0)
 Medium-cycle higher education 26 (18.1) 4 (15.4) 11 (34.4)
 Short-cycle higher education 37 (25.7) 1 (3.8) 7 (21.9)
 Vocational 36 (25.0) 12 (46.2) 8 (25.0)
 Primary school 36 (25.0) 4 (15.4) 6 (18.8)
Self perceived health, n (%) 0.013d
 Good 68 (47.2) 15 (57.7) 12 (37.5)
 Average 66 (45.8) 5 (19.2) 18 (56.3)
 Poor 10 (6.9) 6 (23.1) 2 (6.3)
Charlson’s Comorbidity Index, n (%) < 0.001d
 None (0) 85 (58.9) 0 21 (65.6)
 Low (1–2) 50 (34.5) 21 (80.8) 11 (34.4)
 Medium (3–4) 9 (6.2) 3 (11.5) 0
 High (> 4) 1 (0.7) 2 (7.7) 0

Abbreviations: AMD: Age-related macular degeneration; DME: Diabetic macular edema; RVO: Retinal vein occlusion; n: number; SD: standard deviation; EDTRS: Early Treatment Diabetic Retinopathy Study; LogMAR: Log of the minimum angle of resolution; IQR: interquartile range; aOne-way ANOVA; bChi square Test; cKruskal-Wallis Test; dFishers Exact Test