Table 1 Characteristics of the study population (comparison group [n = 8,930] and retinal vein occlusion [RVO] group [n = 1,801]).
Variables | Comparison group (column %) | RVO group (column %) | P value |
|---|---|---|---|
Atrial fibrillation | <0.001 | ||
No | 8,577 (96.1) | 1684 (93.5) | |
Yes | 353 (4.0) | 117 (6.5) | |
Co-morbidities | |||
Heart failure | 2,157 (24.2) | 633 (35.2) | <0.001 |
Hyperthyroidism | 115 (1.3) | 31 (1.7) | 0.147 |
Acute Myocardial Infarction | 124 (1.4) | 32 (1.8) | 0.209 |
Cerebrovascular disease | 815 (9.1) | 245 (13.6) | <0.001 |
Hypertension | 3,499 (39.2) | 1082 (60.1) | <0.001 |
Diabetes mellitus | 1,686 (18.9) | 534 (29.7) | <0.001 |
Chronic kidney disease | 251 (2.8) | 111 (6.2) | <0.001 |
Chronic lung disease | 2,651 (29.7) | 574 (31.9) | 0.065 |
Liver disease | 1,526 (17.1) | 406 (22.5) | <0.001 |
Variables for matching | |||
Year | |||
2003 | 1,786 (20.0) | 362 (20.1) | 0.991 |
2004 | 1,972 (22.1) | 396 (22.0) | |
2005 | 1,666 (18.7) | 328 (18.2) | |
2006 | 1,622 (18.2) | 328 (18.2) | |
2007 | 1,884 (21.1) | 387 (21.5) | |
Age group (year) | 0.998 | ||
<50 | 1,841 (20.6) | 370 (20.5) | |
50~59 | 2,001 (22.4) | 401 (22.3) | |
60~69 | 3,026 (33.9) | 609 (33.8) | |
70~79 | 1,637 (18.3) | 332 (18.4) | |
≥80 | 425 (4.8) | 89 (4.9) | |
Sex | 0.804 | ||
Male | 4,015 (45.0) | 804 (44.6) | |
Female | 4,915 (55.0) | 997 (55.4) | |
Residence | 0.963 | ||
Seoul (metropolitan) | 1,846 (20.7) | 372 (20.7) | |
2nd area | 1,588 (17.8) | 329 (18.3) | |
3rd area | 1,992 (22.3) | 402 (22.3) | |
4th area | 3,504 (39.2) | 698 (38.8) | |
Household income | 0.915 | ||
0~30% | 2,062 (23.1) | 409 (22.7) | |
30–70% | 2,952 (33.1) | 603 (33.5) | |
70–100% | 3,916 (43.9) | 789 (43.8) | |
