Table 1 Baseline characteristics of study subjects.
From: Incidence and factors associated with mortality in 2,476 patients with variant angina in Korea
Variable Year | Total (n = 2,476) | 2004 (n = 321) | 2005 (n = 267) | 2006 (n = 275) | 2007 (n = 261) | 2008 (n = 271) | 2009 (n = 303) | 2010 (n = 348) | 2011 (n = 430) |
|---|---|---|---|---|---|---|---|---|---|
Age group | |||||||||
15–49 years | 644 (26.0) | 96 (29.9) | 79 (29.6) | 73 (26.5) | 81 (31.1) | 65 (24.0) | 79 (26.1) | 76 (21.8) | 95 (22.1) |
50–64 years | 1,076 (43.5) | 133 (41.4) | 111 (41.6) | 124 (45.1) | 111 (42.5) | 116 (42.8) | 138 (45.5) | 167 (48.0) | 176 (40.9) |
≥65 years | 756 (30.5) | 92 (28.7) | 77 (28.8) | 78 (28.4) | 69 (26.4) | 90 (33.2) | 86 (28.4) | 105 (30.2) | 159 (37.0) |
Female sex | 1,062 (42.9) | 121 (37.7) | 126 (47.2) | 114 (41.5) | 105 (40.2) | 132 (48.7) | 128 (42.2) | 146 (42.0) | 190 (44.2) |
Cardiovascular risk factors | |||||||||
Hypertension | 1,615 (65.2) | 229 (71.3) | 170 (63.7) | 198 (72.0) | 163 (62.5) | 178 (65.7) | 189 (62.4) | 231 (66.4) | 257 (59.8) |
Diabetes mellitus | 533 (21.5) | 53 (16.5) | 52 (19.5) | 62 (22.5) | 66 (25.3) | 51 (18.8) | 57 (18.8) | 96 (27.6) | 96 (22.3) |
Dyslipidemia | 937 (37.8) | 102 (31.8) | 92 (34.5) | 104 (37.8) | 80 (30.7) | 93 (34.3) | 142 (46.9) | 138 (39.7) | 186 (43.3) |
Good medication adherence | 1,325 (53.5) | 208 (64.8) | 151 (56.6) | 149 (54.2) | 113 (43.3) | 135 (49.8) | 171 (56.4) | 188 (54.0) | 210 (48.8) |
Tertiary teaching hospital | 2,044 (82.6) | 254 (79.1) | 221 (82.8) | 231 (84.0) | 199 (76.2) | 228 (84.1) | 244 (80.5) | 306 (87.9) | 361 (84.0) |
Type of medical security | |||||||||
Health insurance | 2,398 (96.8) | 320 (99.7) | 264 (89.9) | 274 (99.6) | 258 (98.9) | 258 (95.2) | 290 (95.7) | 347 (99.7) | 387 (90.0) |
Medical aid | 79 (3.2) | 1 (0.3) | 3 (1.1) | 1 (0.4) | 3 (1.1) | 13 (14.8) | 13 (4.3) | 1 (0.3) | 43 (10.0) |
Household income | |||||||||
0–3 quintile (lowest) | 519 (21.0) | 50 (45.6) | 49 (18.4) | 56 (20.4) | 47 (18.0) | 70 (25.8) | 61 (20.1) | 61 (17.5) | 125 (29.1) |
4–8 quintile (middle) | 1,135 (45.8) | 147 (45.8) | 125 (46.8) | 131 (47.63) | 121 (46.4) | 123 (45.4) | 142 (46.9) | 168 (48.3) | 178 (41.4) |
9–10 quintile (highest) | 822 (33.2) | 124 (38.6) | 93 (34.8) | 88 (32.0) | 93 (35.6) | 78 (28.8) | 100 (33.0) | 119 (34.2) | 127 (29.5) |
Living in metropolitan | 1,128 (45.6) | 138 (43.0) | 120 (44.9) | 108 (39.3) | 121 (46.4) | 128 (47.2) | 151 (49.8) | 160 (46.0) | 202 (47.0) |
