Table 3.
HRs and 95% CIs for the association of BMI categories with all-cause mortality among people with heart failure
| BMI category | N | n | Crude model | Age and sex adjusted | N* | n* | Multivariable model† | |||
| Underweight (<18.5 kg/m2) | 1084 | 756 | 1.59 | (1.48 to 1.71) | 1.52 | (1.41 to 1.64) | 681 | 446 | 1.59 | (1.45 to 1.75) |
| Healthy weight (18.5–25 kg/m2) | 14 880 | 8959 | 1.00 | (Reference) | 1.00 | (Reference) | 10 223 | 5579 | 1.00 | (Reference) |
| Overweight (25–30 kg/m2) | 17 277 | 8939 | 0.74 | (0.72 to 0.76) | 0.81 | (0.79 to 0.84) | 13 071 | 6054 | 0.78 | (0.75 to 0.81) |
| Obesity class I (30–35 kg/m2) | 9013 | 4197 | 0.64 | (0.62 to 0.66) | 0.79 | (0.76 to 0.82) | 7235 | 3045 | 0.76 | (0.73 to 0.80) |
| Obesity class II (35–40 kg/m2) | 3400 | 1417 | 0.56 | (0.53 to 0.59) | 0.78 | (0.74 to 0.82) | 2904 | 1123 | 0.76 | (0.71 to 0.81) |
| Obesity class III (≥40 kg/m2) | 1877 | 745 | 0.56 | (0.52 to 0.60) | 0.95 | (0.88 to 1.02) | 1614 | 594 | 0.96 | (0.88 to 1.05) |
*The numbers at risk and dying are smaller in the multivariable model due to missing data.
†Adjusted for sex, age, smoking status, index of multiple deprivation, ethnicity, systolic and diastolic blood pressure, total cholesterol, and history of atrial fibrillation, angina, type 2 diabetes mellitus, hypertension, ischaemic heart disease, myocardial infarction, stroke, valvular heart disease and other cardiovascular diseases.
BMI, body mass index; N, number at risk of dying within the relevant BMI category; n, number dying from all-causes for the BMI category.