Table 1.

Baseline characteristics before and after propensity score matching

Baseline CharacteristicsBefore Propensity MatchingAfter Propensity Matching
TAVR (n=386)SAVR (n=1177)P ValueTAVR (n=195)SAVR (n=195)P Value
STS risk score8.6±6.32.6±2.8<0.0016.3±4.66.2±4.60.65
Age (yr)81±871±12<0.00180±980±80.48
Men217 (56)714 (61)0.12103 (53)105 (54)0.84
White374 (97)1099 (93)0.01185 (95)177 (91)0.12
BMI (kg/m2)30.4±7.530.3±6.70.9530.1±7.630.4±7.00.63
eGFR (ml/min per 1.73 m2)55±2169±19<0.00157±5156±190.59
NYHA classes 3 and 4335 (87)559 (47)<0.001154 (79)158 (81)0.61
Comorbidity
 DM157 (41)295 (25)<0.00173 (37)82 (42)0.35
 HTN349 (90)859 (73)<0.001173 (89)178 (91)0.40
 Dyslipidemia346 (90)980 (83)0.002167 (86)178 (91)0.08
 MI139 (36)126 (11)<0.00153 (27)56 (29)0.74
 CHF223 (58)183 (16)<0.00181 (42)84 (43)0.76
 CVD110 (28)172 (15)<0.00147 (24)51 (26)0.64
 PVD226 (59)115 (10)<0.00176 (39)76 (39)>0.99
 Anemia10 (3)8 (1)0.0024 (2)3 (2)0.70
 CLD240 (62)217 (18)<0.001104 (53)97 (50)0.48
 Smoking within 1 yr11 (3)81 (7)0.0045 (3)11 (6)0.13
Prior cardiac intervention
 PCI199 (52)163 (14)<0.00180 (41)77 (39)0.76
 Cardiac surgery181 (47)225 (19)<0.00172 (37)73 (37)0.92
 CABG167 (43)151 (13)<0.00162 (32)66 (34)0.67
 Valve surgery84 (22)103 (9)<0.00130 (15)21 (11)0.18
 AV surgery10 (3)72 (6)0.019 (5)8 (4)0.80
Echocardiographic finding
 EF56±1361±11<0.00157±1357±130.86
 AV gradient48±1450±150.00349±1550±140.58
 AV insufficiency209 (54)646 (55)0.80101 (52)109 (56)0.42
 Myocardial dysfunction300 (78)598 (51)<0.001146 (75)140 (72)0.49
Preoperative medication
 ACEI/ARB157 (41)466 (40)0.6481 (42)89 (46)0.41
 β-Blocker266 (69)517 (44)<0.001132 (68)117 (60)0.11
 Statin281 (73)744 (63)0.001133 (68)148 (76)0.09
 Aspirin284 (74)719 (61)<0.001131 (67)143 (73)0.18
 Normal sinus rhythm280 (73)1084 (92)<0.001152 (78)155 (79)0.71
 Elective surgery368 (96)1126 (96)0.78180 (92)183 (94)0.55
  • Continuous variable are reported as means±SDs. Categorical variable are reported as count (%). BMI, body mass index; NYHA, New York Heart Association; DM, diabetes mellitus; HTN, hypertension; MI, myocardial infarction; CHF, congestive heart failure; CVD, cerebrovascular disease; PVD, peripheral vascular disease; CLD, chronic lung disease; PCI, percutaneous cardiac intervention; CABG, coronary artery bypass graft; AV, aortic valve; EF, ejection fraction; ACEI/ARB, angiotensin–converting enzyme inhibitor/angiotensin receptor blocker.