Table 1 Baseline characteristics of eligible participants in the study
From: Age- and sex-related differences in the retinal capillary plexus in healthy Chinese adults
Total (n = 1036) | Age group (years) | P | |||||
|---|---|---|---|---|---|---|---|
20–29 | 30–39 | 40–49 | 50–59 | ≥ 60 | |||
(n = 79) | (n = 516) | (n = 240) | (n = 153) | (n = 48) | |||
Age (mean ± SD, years) | 40.4 ± 9.8 | 27.0 ± 1.9 | 34.4 ± 2.6 | 44.3 ± 2.9 | 53.3 ± 2.6 | 65.2 ± 4.1 | < 0.001 |
Male, n (%) | 449 (43.3%) | 32 (40.5%) | 229 (44.4%) | 90 (37.5%) | 70 (45.8%) | 28 (58.3%) | 0.07 |
Education level, n (%) | < 0.001 | ||||||
Middle school and below | 214 (20.7) | 5 (6.3) | 35 (6.8) | 68 (28.3) | 70 (45.8) | 36 (75.0) | |
College/University | 813 (78.5) | 74 (93.7) | 473 (91.7) | 172 (71.7) | 82 (53.6) | 12 (25.0) | |
Current smoking, n (%) | 202 (19.5) | 16 (10.3) | 96 (18.6) | 52 (21.7) | 31 (20.3) | 7 (14.6) | 0.79 |
Current drinking, n (%) | 124 (12.0) | 6 (7.6) | 53 (10.3) | 38 (15.8) | 22 (14.4) | 5 (10.4) | 0.12 |
BMI (kg/m2) | 23.8 ± 3.3 | 23.3 ± 4.2 | 23.6 ± 3.4 | 24.1 ± 3.3 | 23.8 ± 2.7 | 24.0 ± 2.6 | 0.18 |
MAP (mmHg) | 87.5 ± 8.9 | 87.1 ± 8.3 | 86.2 ± 8.6 | 88.8 ± 9.1 | 89.2 ± 9.4 | 90.0 ± 9.0 | < 0.001 |
SE (D) | − 1.5 ± 1.7 | − 1.7 ± 1.5 | − 1.9 ± 1.6 | − 1.3 ± 1.6 | − 0.5 ± 1.4 | 0.5 ± 1.1 | < 0.001 |
AL (mm) | 24.0 ± 0.6 | 24.1 ± 0.5 | 24.1 ± 0.6 | 23.9 ± 0.6 | 23.8 ± 0.6 | 23.7 ± 0.5 | < 0.001 |
SSI | 8.6 ± 0.6 | 8.6 ± 0.7 | 8.6 ± 0.6 | 8.6 ± 0.6 | 8.6 ± 0.6 | 8.3 ± 0.8 | 0.004 |