TABLE 2.
Baseline Characteristics by Neighborhood Income and Individual Educationa
| Income tertiles |
Education categories |
|||||
|---|---|---|---|---|---|---|
| Characteristic | First (n=219) | Second (n=238) | Third (n=248) | <12y (n=105) | 12 y (n=252) | >12y (n=338) |
| Median | $34,205 | $50,091 | $60,652 | 8y | 12 y | 16 y |
| Demographics | ||||||
| Age (y), mean ± SD | 73±15 | 67±15 | 67±14b | 77±13 | 69±14 | 66±15b |
| Female | 120 (55) | 89 (37) | 100 (40)c | 54 (51) | 124 (49) | 133 (39) |
| White | 204 (93) | 231 (97) | 239 (96)c | 97 (92) | 244 (97) | 326 (96)c |
| Cardiovascular risk factors | ||||||
| Prior MI | 17 (8) | 7 (3) | 11 (4) | 9 (9) | 15 (6) | 13 (4) |
| Hypertension | 167 (76) | 152 (64) | 179 (72) | 84 (80) | 182 (72) | 234 (69) |
| Diabetes | 55 (25) | 55 (23) | 58 (23) | 38 (36) | 64 (25) | 68 (20)b |
| Hyperlipidemia | 133 (61) | 148 (62) | 148 (60) | 58 (55) | 159 (63) | 206 (61) |
| Current smoking | 39 (18) | 55 (23) | 44 (18)c | 16 (15) | 69 (27) | 49 (15)b |
| BMI, mean ± SDd | 27.8±6.0 | 29.0±6.4 | 28.8±6.4 | 27.9±6.0 | 28.5±6.5 | 28.7±6.1 |
| MI characteristics and comorbidity | ||||||
| ST elevation | 35 (16) | 45 (19) | 62 (25) | 19 (18) | 48 (19) | 75 (22) |
| Ejection fraction | ||||||
| ≥50 | 116 (68) | 137 (68) | 139 (70) | 45 (56) | 146 (70) | 196 (71)b |
| 35-49 | 37 (22) | 40 (20) | 47 (24) | 21 (26) | 43 (21) | 58 (21) |
| <35 | 18 (11) | 25 (12) | 13 (7) | 15 (19) | 18 (9) | 22 (8) |
| Comorbidity index, points | ||||||
| 0 | 44 (20) | 84 (35) | 99 (40)a | 13 (12) | 74 (29) | 130 (39)a |
| 1-2 | 81 (37) | 80 (34) | 73 (29) | 41 (39) | 73 (29) | 117 (35) |
| ≥3 | 94 (43) | 74 (31) | 76 (31) | 51 (49) | 104 (41) | 91 (27) |
| Treatmente | ||||||
| PTCA | 88 (40) | 119 (50) | 124 (50) | 39 (37) | 115 (46) | 170 (50) |
| CABG | 13 (6) | 15 (6) | 23 (9) | 8 (8) | 17 (7) | 26 (8) |
| Statins | 139 (64) | 174 (73) | 165 (67) | 65 (62) | 173 (69) | 235 (70) |
| β-Blockers | 201 (92) | 215 (90) | 215 (90) | 92 (88) | 225 (89) | 312 (92) |
| Aspirin | 198 (90) | 219 (92) | 232 (94) | 94 (90) | 231 (92) | 314 (93) |
a
Data are presented as number (percentage) unless otherwise specified. BMI = body mass index; CABG = coronary artery bypass grafting; MI = myocardial infarction; PTCA = percutaneous transluminal coronary angioplasty.
b
Age- and sex-adjusted P for trend ≤.05.
c
Age- and sex-adjusted P for trend ≤.01.
d
Calculated as weight in kilograms divided by the square of height in meters.
e
During the index hospitalization.