Table 1 Characteristics at baseline before PSM: sample of dizziness or vertigo
Variable | Total (N = 2057) | Gastrodin injection (N = 1529) | Extract of Ginkgo Biloba Leaves injection (N = 528) | P |
|---|---|---|---|---|
Region, (n, %) |  |  |  |  < 0.001 |
 Eastern | 1079 (52.5) | 824 (53.9) | 255 (48.3) |  |
 Central | 363 (17.6) | 206 (13.5) | 157 (29.7) |  |
 Western | 556 (27.0) | 449 (29.4) | 107 (20.3) |  |
 Northeast | 59 (2.9) | 50 (3.3) | 9 (1.7) |  |
Hospital level, (n, %) |  |  |  |  < 0.001 |
 Tertiary | 1889 (91.8) | 1384 (90.5) | 505 (95.6) |  |
 Secondary | 139 (6.8) | 122 (8.0) | 17 (3.2) |  |
 Primary | 29 (1.4) | 23 (1.5) | 6 (1.1) |  |
Hospital department, (n, %) |  |  |  |  < 0.001 |
 Neurology | 1492 (72.5) | 1179 (77.1) | 313 (59.3) |  |
 E.N.T | 146 (7.1) | 37 (2.4) | 109 (20.6) |  |
 Cardiovascular medicine | 29 (1.4) | 23 (1.5) | 6 (1.1) |  |
 ICU | 390 (19.0) | 0 | 0 |  |
 Others | 55 (45, 64) | 290 (19.0) | 100 (18.9) |  |
Age (y), (n, %) | Â | Â | Â | 0.674 |
 [18, 45] | 514 (25.0) | 377 (24.7) | 137 (25.9) |  |
 [45,60] | 750 (36.5) | 555 (36.3) | 195 (36.9) |  |
 [60,75] | 758 (36.8) | 568 (37.1) | 190 (36.0) |  |
 ≥ 75 | 35 (1.7) | 29 (1.9) | 6 (1.1) |  |
Gender (n, %) | Â | Â | Â | 0.959 |
 Female | 1235 (60.0) | 917 (60.0) | 318 (60.2) |  |
 Male | 822 (40.0) | 612 (40.0) | 210 (39.8) |  |