Baseline Baseline Baseline Baseline Weighted characteristics after IPW Weighted characteristics after IPW Weighted characteristics after IPW Weighted characteristics after IPW
Perceval SAVR p-value* SMD Perceval SAVR p-value* SMD
N = 265 N = 394 N = 258 N = 394
N (%) or Mean (SD) Weighted % or mean (SE) Weighted % or mean (SE)
Primary procedure <0.001 0.307 0.38 0.074
Isolated valve 107 (40.4) 219 (55.6) 45.63 49.31
CABG + valve 158 (59.6) 175 (44.4) 54.37 50.69
Age at surgery, years
Mean (SD) 71.6 (8.3) 68.0 (9.7) <0.001 0.408 70.82 (0.56) 69.4 (0.48) 0.06 0.157
< 50 2 (0.8) 13 (3.3) <0.001 -0.181 0.6 2.26 0.55 -0.118
50 - 59 26 (9.8) 65 (16.5) -0.198 11.98 13.59 -0.048
60 - 69 79 (29.8) 143 (36.3) -0.138 33.13 33.77 -0.014
70 - 79 116 (43.8) 140 (35.5) 0.169 41.68 38.5 0.065
≥ 80 42 (15.8) 33 (8.4) 0.23 12.61 11.87 0.023
Female (%) 86 (32.5) 112 (28.4) 0.27 0.087 30.72 31.83 0.78 0.024
Body Surface Area (BSA), m2
Mean (SD) 2.0 (0.2) 2.0 (0.3) 0.33 -0.079 2.02 (0.01) 2.03 (0.01) 0.68 -0.034
< 1.70 29 (10.9) 31 (7.9) 0.38 0.105 9.51 9.1 0.69 0.014
1.70-1.99 98 (37.0) 145 (36.8) 0.004 39.41 36.26 0.065
≥ 2.00 138 (52.1) 218 (55.3) -0.065 51.08 54.63 -0.071
Disease characteristics
Preoperative WBC count > 12,000 mm3 9 (3.4) 5 (1.3) 0.063 0.141 2.18 1.96 0.85 0.015
Prior CABG surgery 4 (1.5) 4 (1.0) 0.57 0.044 1.12 1.08 0.96 0.004
Prior valve surgery 17 (6.4) 18 (4.6) 0.3 0.081 5.68 3.83 0.27 0.081
Prior PCI 52 (19.6) 40 (10.2) <0.001 0.268 18.77 11.4 0.01 0.209
Comorbid disease
Preoperative atrial fibrillation 61 (23.0) 79 (20.1) 0.36 0.072 21.5 20.63 0.80 0.021
Vascular disease 127 (47.9) 215 (54.6) 0.094 -0.133 49.11 51.08 0.64 -0.039
Diabetes 122 (31.0) 107 (40.4) 0.013 0.197 36.31 34.18 0.59 0.045
COPD 57 (21.5) 82 (20.8) 0.83 0.017 20.73 20.96 0.94 -0.006
Smoking 27 (10.2) 48 (12.2) 0.43 -0.063 10.47 11.51 0.69 -0.033
Congestive Heart Failure 111 (41.9) 154 (39.1) 0.47 0.057 38.92 39.4 0.91 -0.01
History of dialysis or creatinine >1.3 43 (16.2) 36 (9.1) 0.006 0.21 2.85 0.54 0.86 0.167
Prior CVA 22 (8.3) 20 (5.1) 0.096 0.129 8.84 4.81 0.05 0.161
Prior Myocardial Infarction 0.008
No 190 (71.7) 323 (82.0) -0.167 73.83 79.51 0.21 -0.029
≤ 7 days 17 (6.4) 17 (4.3) 0.093 5.62 5.52 0.004
> 7 days 58 (21.9) 54 (13.7) 0.135 20.55 14.97 0.035
Left main stenosis ≥ 50% 42 (15.8) 47 (11.9) 0.15 0.113 14.5 14.75 0.93 -0.007
Three-vessel disease 87 (32.8) 72 (18.3) <0.001 0.338 30.41 21.87 0.02 0.198
Ejection fraction (%)
Mean (SD) 56.4 (10.2) 57.4 (10.1) 0.23 -0.096 56.87 (0.67) 57.43 (0.52) 0.51 -0.055
< 40 21 (7.9) 29 (7.4) 0.34 0.021 7.21 7.45 0.66 -0.009
40-49 24 (9.1) 24 (6.1) 0.112 7.93 6.35 0.06
50-59 96 (36.2) 133 (33.8) 0.052 36.38 33.11 0.069
≥ 60 124 (46.8) 208 (52.8) -0.12 48.48 53.09 -0.092
Priority at surgery 0.074 -0.141 0.98 -0.002
Urgent 82 (30.9) 97 (24.6) 27.02 26.92
Elective 183 (69.1) 297 (75.4) 72.98 73.08