Table 1.
Baseline characteristics of first year survivors after myocardial infarction according to heart rate at index MI
| Total N=1571 |
Heart rate (beats/min)
|
||||||
|---|---|---|---|---|---|---|---|
| ≤60 N=304 |
61–70 N=313 |
71–80 N=318 |
81–90 N=257 |
>90 N=379 |
Ptrend | ||
| Age (years), mean±SD | 65±14 | 65±13 | 64±13 | 64±14 | 64±14 | 67±15 | 0.009 |
| Men | 980 (62) | 216 (71) | 213 (68) | 186 (59) | 163 (63) | 202 (53) | <0.001 |
| BMI (kg/m2), mean±SD | 28±8 | 28±12 | 28±5 | 29±6 | 29±7 | 28±6 | 0.26 |
| Former or current smoker | 1010 (64) | 194 (64) | 201 (64) | 205 (65) | 179 (70) | 231 (61) | 0.76 |
| Hyperlipidemia | 726 (46) | 145 (48) | 147 (47) | 141 (45) | 117 (46) | 176 (46) | 0.70 |
| Hypertension | 906 (58) | 161 (53) | 166 (53) | 176 (56) | 161 (63) | 242 (64) | <0.001 |
| Heart failure | 109 (7) | 14 (5) | 16 (5) | 13 (4) | 19 (7) | 47 (12) | <0.001 |
| Diabetes mellitus | 317 (20) | 37 (12) | 44 (14) | 69 (22) | 67 (26) | 100 (26) | <0.001 |
| Systolic blood pressure (mmHg), mean±SD | 148±33 | 137±34 | 146±31 | 152±28 | 151±33 | 153±36 | <0.001 |
| Killip class > 1 | 446 (29) | 72 (24) | 70 (22) | 70 (22) | 79 (31) | 155 (41) | <0.001 |
| Estimated glomerular filtration rate (ml/min per 1.73 m2), mean±SD | 62±21 | 64±18 | 64±20 | 64±21 | 60±24 | 59±22 | <0.001 |
| Beta blocker use at admission | 326 (21) | 74 (24) | 78 (25) | 61 (19) | 47 (18) | 66 (18) | 0.005 |
| Beta blocker use at discharge | 1118 (71) | 222 (73) | 234 (75) | 241 (77) | 178 (70) | 243 (64) | 0.002 |
| Reperfusion/revascularization during hospitalization | 1069 (68) | 232 (76) | 247 (79) | 215 (68) | 168 (65) | 207 (55) | <0.001 |
SD = standard deviation; BMI = body mass index; MI = myocardial infarction.
Results presented as n (%) unless otherwise specified. Missing values were less than 1%.