Table 1.
Comparison of Baseline Data of the Study Population Before and After Propensity Score Matching
| Baseline Data | Before PSM | After PSM | ||||||
|---|---|---|---|---|---|---|---|---|
| non-IABP (n=215) | IABP (n=38) | P | SMD | non-IABP (n=64) | IABP (n=16) | P | SMD | |
| Age(years) | 70 (61,77) | 69 (59.50,76) | 0.488 | −0.1435 | 74.50 (65.75,80) | 72 (67.50,78.50) | 0.866 | 0.0464 |
| Gender (n, %) | 0.611 | 0.0514 | 1.000 | 0.0156 | ||||
| Male | 170 (79.07) | 32 (84.21) | 59 (92.19) | 15 (93.75) | ||||
| Female | 45 (20.93) | 6 (15.79) | 5 (7.81) | 1 (6.25) | ||||
| Cardiogenic shock (n, %) | 1 (0.47) | 22 (57.89) | <0.001 | 0.5743 | 0 | 0 | 0 | |
| Systolic Blood Pressure (mmHg) | 127.88±19.26 | 114.76±18.41 | <0.001 | −0.7125 | 121.98±18.45 | 121.19±15.79 | 0.863 | −0.0433 |
| Diastolic Blood Pressure (mmHg) | 75 (67,81.50) | 70 (65,78) | 0.031 | −0.3688 | 71 (65,78) | 71 (65.50,78.75) | 0.928 | −0.038 |
| Left ventricular ejection function (%) | 62 (52.50,65) | 38.50 (28.50,50) | <0.001 | −1.2455 | 47.38±13.25 | 46.69±13.33 | 0.855 | −0.0482 |
| Preoperative Serum creatinine (mol/L) | 114.30 (104,141) | 125 (105,157.20) | 0.276 | 0.1696 | 116.25 (105,139.48) | 116.85 (99.62,126.30) | 0.400 | −0.0424 |
| Contrast Volume (mL) | 60 (60,80) | 80 (60,80) | <0.001 | 0.3998 | 60 (60,80) | 80 (60,80) | 0.169 | 0.0363 |
Note: Bold indicates statistical significance.