Table 1 Baseline characteristics of the study population
Pre-pandemic group(n = 32) | Pandemic group(n = 23) | Post-epidemic group(n = 39) | P* value | P** value | P*** value | |
|---|---|---|---|---|---|---|
Age (years), mean (SD) | 65.5(10.7) | 70.7(10.0) | 69.9(10.1) | 0.077 | 0.079 | 0.784 |
Male gender, n (%) | 21(65.6) | 15(65.2) | 19(48.7) | 0.975 | 0.153 | 0.207 |
Past history, n (%) | ||||||
Hypertension | 23(71.9) | 10(43.5) | 29(74.4) | 0.034 | 0.814 | 0.015 |
Diabetes | 4(12.5) | 4(17.4) | 4(10.3) | 0.707 | 0.999 | 0.454 |
Atrial fibrillation | 17(53.1) | 14(60.9) | 23(59.0) | 0.568 | 0.621 | 0.883 |
Stroke aetiology, n (%) | 0.984 | 0.854 | 0.981 | |||
Large vessel atherosclerosis | 6(18.7) | 5(21.7) | 9(23.1) | |||
Cardioembolic | 21(65.6) | 15(65.2) | 26(66.7) | |||
Others | 2(6.3) | 1(4.4) | 1(2.6) | |||
Undetermined | 3(9.4) | 2(8.7) | 3(7.7) | |||
Thrombus location, n (%) | 0.145 | 0.012 | 0.061 | |||
Intracranial ICA | 10(31.2) | 5(22.7) | 11(28.2) | |||
M1 MCA segment | 10(31.2) | 13(59.1) | 25(64.1) | |||
M2 MCA segment | 6(18.8) | 4(18.2) | 0 | |||
ACA segment | 2(6.3) | 0 | 1(2.6) | |||
Tandem occlusion | 4(12.5) | 0 | 2(5.1) | |||
Unwitnessed onset, n (%) | 3(9.4) | 4(17.4) | 8(21.1) | 0.435 | 0.181 | 0.999 |
Baseline NIHSS, median (IQR) | 12(9,16) | 12(10,18) | 14(11,18) | 0.693 | 0.643 | 0.977 |
ASPECTS, median (IQR) | 9(8,10) | 8(6,9) | 9(7,10) | 0.141 | 0.651 | 0.077 |
Use of rtPA, n (%) | 7(21.9) | 2(8.7) | 1(2.6) | 0.277 | 0.019 | 0.549 |
Transfer from another institution, n (%) | 22(68.8) | 18(78.3) | 31(79.5) | 0.435 | 0.301 | 0.999 |
Total time (OTR), median (IQR) | 310(254,349) | 356(263,404) | 366(328,507) | 0.041 | 0.003 | 0.494 |
Prehospital time (OTD), median (IQR) | 167(120,213) | 238 (194,303) | 244(211,339) | 0.017 | < 0.001 | 0.418 |
Preparation time (DTP), median (IQR) | 72(41,99) | 43(31,89) | 60(42,80) | 0.129 | 0.466 | 0.147 |
Procedural time (PTR), median (IQR) | 47(35,68) | 60(40,77) | 50(40,85) | 0.130 | 0.217 | 0.749 |
Onset to puncture (OTP), median (IQR) | 240(212,300) | 300(225,340) | 312(260,400) | 0.119 | 0.003 | 0.365 |