Research Article
Body Mass Index and 1-Year Unplanned Readmission in Chinese Patients with Acute Myocardial Infarction: A Retrospective Cohort Study
Table 1
Baseline characteristics of participants.
| | BMI | T1 | T2 | T3 | value |
| | N | 58 | 55 | 59 | | | Age (years, mean ± sd) | 62.8 ± 11.0 | 58.8 ± 9.7 | 59.0 ± 11.5 | 0.077 | | Gender, n (%) | | | | 0.355 | | Male | 36 (62.1) | 41 (74.5) | 41 (69.5) | | | Female | 22 (37.9) | 14 (25.5) | 18 (30.5) | | | TC (mmol/l, mean ± sd) | 4.2 ± 1.0 | 4.3 ± 1.1 | 4.5 ± 1.2 | 0.517 | | Triglyceride (mmol/l, mean ± sd) | 1.3 ± 0.7 | 1.5 ± 1.1 | 1.9 ± 1.5 | 0.017 | | HDL-C (mmol/l, mean ± sd) | 1.1 ± 0.3 | 1.1 ± 0.2 | 1.0 ± 0.2 | <0.001 | | LDL-C (mmol/l, mean ± sd) | 2.6 ± 0.7 | 2.7 ± 0.9 | 2.8 ± 1.0 | 0.293 | | PT (sec, mean ± sd) | 12.4 ± 4.3 | 11.3 ± 1.0 | 11.4 ± 1.0 | 0.069 | | APTT (sec, median, Q1–Q3) | 25.8 (23.6–31.5) | 24.1 (21.5–27.4) | 24.4 (21.9–26.8) | 0.015 | | INR (mean ± sd) | 1.0 ± 0.4 | 1.2 ± 1.4 | 1.0 ± 0.1 | 0.463 | | Creatinine (μmol/l, mean ± sd) | 61.9 ± 15.0 | 68.9 ± 18.3 | 67.1 ± 16.3 | 0.072 | | HGB (g/l, mean ± sd) | 135.5 ± 17.2 | 145.2 ± 17.6 | 143.4 ± 18.8 | 0.011 | | LVEF (%) | 49.9 ± 8.5 | 49.3 ± 8.1 | 48.9 ± 8.6 | 0.938 | | Discharge medications, % | | | | | | β-blockers | 43 (75.4) | 40 (76.9) | 48 (80.0) | 0.834 | | Isosorbide mononitrate | 29 (50.9) | 25 (48.1) | 31 (51.7) | 0.925 | | Statins | 51 (89.5) | 51 (98.1) | 54 (90.0) | 0.155 | | Ticagrelor | 27 (47.4) | 32 (61.5) | 33 (55.0) | 0.331 | | ACEI | 22 (38.6) | 26 (50.0) | 31 (51.7) | 0.313 | | Clopidogrel | 27 (47.4) | 18 (34.6) | 24 (40.0) | 0.395 | | Aspirin | 56 (98.2) | 51 (98.1) | 55 (91.7) | 0.222 | | Marital status, n (%) | | | | 0.034 | | Married | 48 (82.8) | 53 (96.4) | 58 (98.3) | | | Unmarried | 1 (1.7) | 1 (1.8) | 0 (0.0) | | | Divorce | 1 (1.7) | 0 (0.0) | 0 (0.0) | | | Death of a spouse | 8 (13.8) | 1 (1.8) | 1 (1.7) | | | Educational level, n (%) | | | | 0.735 | | Illiteracy | 11 (19.0) | 5 (9.1) | 9 (15.2) | | | Primary school | 17 (29.3) | 15 (27.3) | 14 (23.7) | | | Junior school | 18 (31.0) | 18 (32.7) | 20 (34.0) | | | High school/technical secondary school | 11 (19.0) | 14 (25.5) | 15 (25.4) | | | Bachelor degree or above | 1 (1.7) | 3 (5.5) | 1 (1.7) | | | COPD, n (%) | | | | 0.781 | | No | 55 (96.5) | 51 (98.1) | 58 (98.3) | | | Yes | 2 (3.5) | 1 (1.9) | 1 (1.7) | | | Diabetes mellitus, n (%) | | | | 0.496 | | No | 47 (81.0) | 41 (74.5) | 46 (78.0) | | | Yes | 11 (19.0) | 14 (25.5) | 13 (22.0) | | | Heart failure, n (%) | | | | 0.636 | | No | 52 (89.7) | 52 (94.5) | 53 (90.0) | | | Yes | 6 (10.3) | 3 (5.5) | 6 (10.0) | | | History of ischemic stroke, n (%) | | | | 0.059 | | No | 57 (98.3) | 48 (87.3) | 55 (93.2) | | | Yes | 1 (1.7) | 7 (12.7) | 4 (6.8) | | | History of hemorrhagic stroke, n (%) | | | | 0.995 | | No | 57 (98.3) | 54 (98.2) | 58 (98.3) | | | Yes | 1 (1.7) | 1 (1.8) | 1 (1.7) | | | Arrhythmia, n (%) | | | | 0.619 | | No | 50 (86.2) | 49 (89.1) | 54 (91.5) | | | Yes | 8 (14.8) | 6 (10.9) | 5 (8.5) | | | Hypertension, n (%) | | | | 0.187 | | No | 36 (62.1) | 31 (56.4) | 28 (47.5) | | | Yes | 22 (37.9) | 24 (43.6) | 31 (52.5) | |
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BMI, body mass index; TC, total cholesterol; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; PT, prothrombin time; APTT, activated partial thromboplastin time; INR, international normalized ratio; HBG, hemoglobin; COPD, chronic obstructive pulmonary disease.
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