Table 1 Baseline characteristics of EVF( +) and EVF(-)Cohorts before and after IPTW
| Â | Original population | IPTW adjusted population | ||||
|---|---|---|---|---|---|---|
EVF + (n = 75) | EVF- (n = 232) | P | EVF + (n = 151) | EVF- (n = 156) | P | |
Demographic characteristics | ||||||
 Age;years, median(IQR) | 69(63,77) | 67(57,73) | 0.020 | 66(58,75) | 67(58,75) | 0.851 |
 Male, n (%) | 44(58.67) | 143(61.64) | 0.647 | 92(61.11) | 95(61.21) | 0.988 |
Risk factors, n (%) | ||||||
 Atrial fibrillation | 27(32.76) | 76(36.00) | 0.605 | 49(32.29) | 53(33.66) | 0.824 |
 Hypertension | 39(52.00) | 120(51.72) | 0.967 | 80(53.57) | 81(51.55) | 0.767 |
 Diabetes | 19(25.33) | 45(19.40) | 0.271 | 46(30.71) | 30(18.94) | 0.067 |
 Coronary artery disease | 20(26.67) | 51(21.98) | 0.403 | 37(24.75) | 36(22.89) | 0.746 |
 NIHSS score, median( IQR) | 14(11,18) | 12(8,15) | 0.003 | 12(9,17) | 13(9,16) | 0.534 |
 ASPECT score, median( IQR) | 8(7,9) | 9(8,9) | 0.003 | 8(7, 9) | 8(8, 9) | 0.081 |
 Intravenous hrombolytic, n (%) | 25(33.33) | 65(28.02) | 0.379 | 41(32.95) | 35(26.63) | 0.373 |
Stroke cause, n (%) | Â | Â | 0.252 | Â | Â | 0.897 |
 LAA | 95(44.00) | 33(40.95) |  | 67(53.06) | 51(39.05) |  |
 CE | 38(50.67) | 109(46.98) |  | 51(40.23) | 63(47.97) |  |
 Undetermined or others | 4(5.33) | 28(12.07) |  | 8(6.71) | 17(12.98) |  |
 Occlusion site, n (%) |  |  | 0.187 |  |  | 0.338 |
 ICA | 17(22.67) | 73(31.47) |  | 33(26.56) | 42(31.96) |  |
 MCA | 44(58.67) | 131(56.47) |  | 69(55.11) | 71(54.45) |  |
 ICA + MCA | 28(18.67) | 14(12.07) |  | 23(18.33) | 18(13.60) |  |
 Laboratory index | ||||||
 Platelets*109/L, median(IQR) | 196(152,230) | 195(168,230) | 0.670 | 196(161,224) | 195(166,230) | 0.749 |
 Neutrophil*109/L, median(IQR) | 6.9(5.7,9.4) | 7.3(5.7.8.5) | 0.678 | 6.8(5.5,9.5) | 7.3(5.7,9.1) | 0.416 |
 Lymphocyte*109/L, median(IQR) | 1.0(0.8,1.4) | 1.1(0.8,1.5) | 0.172 | 1.0(0.7,1.2) | 1.1(0.6,1.4) | 0.704 |
 Glu;mmol/L, median(IQR) | 6.9(6.1,8.3) | 6.6(5.6,8.2) | 0.148 | 6.8(5.7,8.5) | 6.7(5.5,8.1) | 0.629 |
 LDL;mmol/L, median(IQR) | 2.1(1.6,2.7) | 2.1(1.7,2.6) | 0.956 | 2.1(1.8,2.8) | 2.0(1.6,2.4) | 0.067 |
Operation-related indicators | ||||||
 OPT;min, median(IQR) | 390(285,505) | 465(311,567) | 0.287 | 422(289,505) | 468(311,570) | 0.530 |
 DPT;min, median(IQR) | 130(81,225) | 130(96,191) | 0.965 | 131(80,162) | 126(92,146) | 0.921 |
 Balloon dilation, n (%) | 19(25.33) | 64(27.59) | 0.703 | 37(29.49) | 39(30.04) | 0.939 |
 Endovascular stents, n (%) | 16(21.33) | 55(23.71) | 0.672 | 33(25.07) | 35(28.04) | 0.668 |
 mTICI > 2b; n(%) | 175(64.00) | 48(75.43) | 0.054 | 78(62.10) | 94(72.24) | 0.159 |
 Number of device passes, median( IQR) | 2(1,3) | 2(1,3) | 0.059 | 2(1,3) | 2(1,3) | 0.118 |