Comparisons of demographic characteristics, medical history, behaviour and ocular parameters between the included and excluded individuals
Characteristic | Included (n=2946) | Excluded (n=1847) | t/x2 | P value |
Age | 58.91±10.75 | 53.95±11.06 | −15.281 | <0.001 |
Gender | 10.741 | 0.001 | ||
Male | 1307 (44.4) | 909 (49.2) | ||
Female | 1639 (55.6) | 938 (50.8) | ||
Education | 0.562 | 0.453 | ||
Below high school | 2857 (97.0) | 1784 (96.6) | ||
High school or above | 89 (3.0) | 63 (3.4) | ||
BMI | 25.73±4.06 | 26.09±3.77 | 3.160 | 0.002 |
SBP | 144.27±22.61 | 141.30±21.96 | −4.508 | <0.001 |
DBP | 83.59±12.91 | 84.77±13.13 | 3.076 | 0.002 |
Hypertension | 4.364 | 0.037 | ||
Yes | 897 (33.0) | 521 (30.0) | ||
No | 1818 (67.0) | 1213 (70.0) | ||
Coronary heart disease | 3.877 | 0.049 | ||
Yes | 244 (9.2) | 129 (7.5) | ||
No | 2418 (90.8) | 1598 (92.5) | ||
Diabetes | 5.539 | 0.019 | ||
Yes | 120 (4.5) | 104 (6.1) | ||
No | 2564 (95.5) | 1609 (93.9) | ||
Current smoker | 0.193 | 0.660 | ||
Yes | 749 (26.7) | 470 (26.1) | ||
No | 2055 (73.3) | 1329 (73.9) | ||
Triglycerides | 1.40±1.06 | 1.45±1.28 | 1.420 | 0.156 |
HbA1c | 5.75±0.77 | 5.78±0.99 | 1.116 | 0.265 |
HDL | 1.23±0.28 | 1.21±0.27 | −2.047 | 0.041 |
LDL | 2.69±0.75 | 2.63±0.75 | −2.637 | 0.008 |
Keratometry OD | 44.19±1.54 | 44.14±1.52 | −1.124 | 0.261 |
Keratometry OS | 44.19±1.57 | 44.10±1.53 | −1.953 | 0.051 |
SE OD | 0.40±1.89 | −0.40±2.30 | −10.899 | <0.001 |
SE OS | 0.43±1.90 | −0.35±2.22 | −11.215 | <0.001 |
BCVA OD | 0.72±0.17 | 0.40±0.25 | −47.097 | <0.001 |
BCVA OS | 0.71±0.17 | 0.38±0.24 | −50.777 | <0.001 |
IOP OD | 11.65±2.57 | 12.00±2.45 | 4.702 | <0.001 |
IOP OS | 12.17±2.33 | 12.56±2.61 | 5.268 | <0.001 |
CCT OD | 532.61±29.75 | 535.05±29.35 | 2.695 | 0.007 |
CCT OS | 532.25±29.74 | 534.93±29.13 | 2.968 | 0.003 |
AL OD | 22.81±1.05 | 22.95±1.05 | 4.195 | <0.001 |
AL OS | 22.76±0.90 | 22.92±0.94 | 5.675 | <0.001 |
ACD OD | 2.76±0.35 | 2.84±0.39 | 7.424 | <0.001 |
ACD OS | 2.75±0.35 | 2.85±0.36 | 8.792 | <0.001 |
Vertical C/D OD | 0.35±0.13 | 0.35±0.14 | 0.686 | 0.493 |
Vertical C/D OS | 0.35±0.13 | 0.35±0.14 | 1.557 | 0.120 |
All data were shown as M± SD or n (%).
ACD, anterior chamber depth; AL, axial length; CCT, central corneal thickness; DBP, diastolic blood pressure; HDL, high-density lipoprotein; IOP, intraocular pressure; LDL, low-density lipoprotein; SBP, systolic blood pressure; SE, spherical equivalent; Vertical C/D, vertical cup disc ratio.