Table 3 Anemia as an independent predictor of ISR after matching on the propensity score
From: Impact of anemia on in-stent restenosis after percutaneous coronary intervention
Variable | Before matching | P value | After Matching | P value | ||
|---|---|---|---|---|---|---|
Anemia n = 179 | No anemia n = 359 | Anemia n = 159 | No anemia n = 159 | |||
Male, n (%) | 147 (82.1) | 237 (66.0) | 0.000 | 132 (83.0) | 132 (83.0) | 1.000 |
Age (years) | 62.9 ± 11.2 | 61.8 ± 9.7 | 0.139 | 62.8 ± 11.2 | 62.3 ± 9.2 | 0.472 |
Current smoker, n (%) | 89 (49.7) | 144 (40.1) | 0.034 | 77 (48.4) | 82 (51.6) | 0.575 |
BMI (kg/m2) | 24.5 ± 2.9 | 24.4 ± 2.8 | 0.887 | 24.7 ± 2.9 | 24.5 ± 2.8 | 0.483 |
Hypertension, n (%) | 117 (65.4) | 230 (64.1) | 0.767 | 103 (64.8) | 103 (64.8) | 1.000 |
Diabetes mellitus, n (%) | 42 (23.5) | 71 (19.8) | 0.323 | 35 (22.0) | 35 (22.0) | 1.000 |
LDL-c (mmol/L) | 2.5 ± 1.0 | 2.6 ± 0.9 | 0.175 | 2.6 ± 1.0 | 2.5 ± 0.9 | 0.629 |
TG (mmol/L) | 1.5 ± 1.0 | 1.6 ± 0.9 | 0.413 | 1.5 ± 0.8 | 1.5 ± 0.9 | 0.805 |
Hb (g/dL) | 110.8 ± 14.8 | 145.5 ± 13.8 | 0.000 | 111.2 ± 14.4 | 139.5 ± 9.9 | 0.000 |
LVEF (%) | 59.8 ± 6.0 | 59.9 ± 7.0 | 0.859 | 60.1 ± 6.0 | 60.6 ± 7.4 | 0.545 |
CKD (%) | 31 (17.3) | 36 (10.0) | 0.016 | 21 (13.2) | 14 (8.8) | 0.210 |
ACS (%) | 96 (53.6) | 199 (55.4) | 0.693 | 89 (56.0) | 80 (50.3) | 0.312 |
Multiple stenting, n (%) | 52 (29.1) | 104 (29.0) | 0.984 | 46 (28.9) | 49 (30.8) | 0.713 |
Stent length (mm) | 29.6 ± 5.2 | 29.5 ± 5.6 | 0.834 | 29.8 ± 5.3 | 30.0 ± 5.5 | 0.640 |
Stent diameter (mm) | 3.1 ± 0.5 | 3.2 ± 0.5 | 0.130 | 3.1 ± 0.5 | 3.2 ± 0.5 | 0.762 |
Multivessel coronary disease (%) | 27 (15.1) | 75 (20.9) | 0.105 | 26 (16.4) | 28 (17.6) | 0.765 |
LMCA, n (%) | 3 (1.7) | 9 (2.5) | 0.759 | 3 (1.9) | 3 (1.9) | 1.000 |
LAD, n (%) | 17 (9.5) | 65 (18.1) | 0.009 | 16 (10.1) | 20 (12.6) | 0.479 |
LCX, n (%) | 86 (48.0) | 162 (45.1) | 0.522 | 79 (49.7) | 77 (48.4) | 0.822 |
RCA, n (%) | 73 (40.8) | 136 (37.9) | 0.516 | 60 (37.7) | 60 (37.7) | 1.000 |
Bifurcation lesion, n (%) | 40 (22.3) | 98 (27.3) | 0.215 | 39 (24.5) | 40 (25.2) | 0.897 |
Calcification, n (%) | 12 (6.7) | 15 (4.2) | 0.206 | 9 (5.7) | 11 (6.9) | 0.644 |
Statins, n (%) | 171 (95.5) | 338 (94.2) | 0.504 | 151 (95.0) | 151 (95.0) | 1.000 |
Aspirin, n (%) | 179 (100) | 359 (100) | 0.019 | 159 (100) | 157 (98.7) | 0.156 |
Clopidogrel, n (%) | 93 (52.0) | 175 (48.7) | 0.483 | 79 (49.7) | 87 (54.7) | 0.369 |
Ticagrelor, n (%) | 73(40.8) | 164(45.7) | 0.281 | 69(43.4) | 65(40.9) | 0.650 |
ISR | 19 (10.6) | 9 (2.5) | 0.000 | 16 (10.1) | 4 (2.5) | 0.009 |