Introduction
Methods
Post-mortem cases
Post-mortem computed tomography
Heart mass measurements
Statistical analysis
Results
Post-mortem case characteristics
Variable | All cases | Males | Females | P value |
---|---|---|---|---|
Sample | 87 | 63 | 24 | |
Age (years) | 56 (18–86) | 55 (18–78) | 63 (23–86) | 0.26 |
BMI (kg/m2) | 28.0 (13.0–48.9) | 28.4 (18.7–48.9) | 26.7 (13.0–40.3) | 0.16 |
BSA (m2) | 2.0 (1.3–2.6) | 2.0 (1.4–2.6) | 1.8 (1.3–2.3) | < 0.0001 |
Body weight (kg) | 80 (34–148) | 86 (49–148) | 72 (34–120) | 0.001 |
Body height (cm) | 172 (148–192) | 176 (148–192) | 163 (148–175) | < 0.0001 |
Heart mass (g) | 435 (215–865) | 465 (270–865) | 388 (215–580) | 0.0008 |
Heart volume (cm3) | 736 (282–1495) | 770 (324–1495) | 574 (282–1026) | 0.008 |
Univariable analyses of heart mass and PMCT-derived heart volume and formulation of heart mass estimation equation from simple linear regression
Variable | All cases | Male cases | Female cases | |||
---|---|---|---|---|---|---|
rs | P value | rs | P value | rs | P value | |
Heart mass | ||||||
Age | −0.015 | 0.85 | 0.040 | 0.76 | 0.140 | 0.52 |
Sex | −0.356 | < 0.0001 | - | - | - | - |
BMI | 0.643 | < 0.0001 | 0.631 | < 0.0001 | 0.645 | 0.001 |
BSA | 0.725 | < 0.0001 | 0.720 | < 0.0001 | 0.570 | 0.004 |
Body weight | 0.714 | < 0.0001 | 0.711 | < 0.0001 | 0.618 | 0.001 |
Heart volume | ||||||
Age | −0.030 | 0.99 | 0.082 | 0.53 | −0.046 | 0.83 |
Sex | −0.285 | 0.004 | - | - | - | - |
BMI | 0.573 | < 0.0001 | 0.480 | < 0.0001 | 0.682 | < 0.0001 |
BSA | 0.626 | < 0.0001 | 0.558 | < 0.0001 | 0.549 | 0.005 |
Body weight | 0.631 | < 0.0001 | 0.551 | < 0.0001 | 0.623 | 0.001 |
Predictor variable | All cases | Male cases | Female cases | ||||||
---|---|---|---|---|---|---|---|---|---|
β | P value | R2 | β | P value | R2 | β | P value | R2 | |
Age | 0.938 | 0.738 | 0.00 | 1.319 | 0.628 | 0.00 | 1.045 | 0.476 | 0.02 |
Sex | −102.9 | 0.0009 | 0.12 | - | - | - | - | - | - |
BSA | 310.8 | < 0.0001 | 0.46 | 331.0 | < 0.0001 | 0.42 | 214.8 | 0.0048 | 0.31 |
Heart volume | 0.456 | < 0.0001 | 0.72 | 0.66 | < 0.0001 | 0.70 | 0.385 | < 0.0001 | 0.64 |
Multivariable analyses of heart mass predictors and formulation of regression equations for estimating heart mass
Predictor variable | All cases | Male cases | Female cases | ||||||
---|---|---|---|---|---|---|---|---|---|
β | P value | R2 adj | β | P value | R2 adj | β | P value | R2 adj | |
Model 1 | |||||||||
Age | 2.641 | 0.0002 | 0.54 | 2.256 | 0.027 | 0.46 | 2.941 | 0.002 | 0.53 |
Sex | - | - | - | - | |||||
BSA | 359.8 | < 0.0001 | 356.1 | < 0.0001 | 332.4 | < 0.0001 | |||
Model 2 | |||||||||
Age | 1.344 | 0.008 | 0.78 | 0.74 | 2.104 | 0.004 | 0.74 | ||
Sex | - | - | - | - | |||||
BSA | 147.7 | < 0.0001 | 113.5 | 0.008 | 168.8 | 0.012 | |||
Heart volume | 0.345 | < 0.0001 | 0.380 | < 0.0001 | 0.279 | 0.002 |