Baseline characteristics of patients before and after propensity score matching
| Before matched | After matched | |||||
| Non-IAs | IAs | P | Non-IAs | IAs | P | |
| n=9831 | n=5496 | n=4951 | n=4951 | |||
| Sex, number (%) | <0.001 | 0.063 | ||||
| Male | 5693 (57.9) | 2254 (41.0) | 2264 (45.7) | 2171 (43.8) | ||
| Female | 4138 (42.1) | 3242 (59.0) | 2687 (54.3) | 2780 (56.2) | ||
| Age, mean, (SD), years | 63.9 (13.5) | 57.8 (12.0) | <0.001 | 58.0 (12.9) | 58.4 (12.0) | 0.072 |
| Age class, number (%) | <0.001 | 0.190 | ||||
| 18–39 years | 477 (4.9) | 394 (7.2) | 404 (8.16) | 357 (7.21) | ||
| 40–59 years | 2981 (30.3) | 2656 (48.3) | 2215 (44.7) | 2258 (45.6) | ||
| ≥60 years | 6373 (64.8) | 2446 (44.5) | 2332 (47.1) | 2336 (47.2) | ||
| BP class, mm Hg, SBP/DBP, number (%) | <0.001 | 0.939 | ||||
| <140/<90 | 3449 (35.1) | 2434 (44.3) | 2174 (43.9) | 2170 (43.8) | ||
| 140~159/90~99 | 3404 (34.6) | 1111 (20.2) | 1094 (22.1) | 1089 (22.0) | ||
| 160~179/100~109 | 2065 (21.0) | 888 (16.2) | 872 (17.6) | 859 (17.4) | ||
| ≥180/≥110 | 913 (9.3) | 1063 (19.3) | 811 (16.4) | 833 (16.8) | ||
| Hyperlipidaemia, number (%) | <0.001 | 0.431 | ||||
| No | 4726 (48.1) | 3060 (55.7) | 2665 (53.8) | 2705 (54.6) | ||
| Yes | 5105 (51.9) | 2436 (44.3) | 2286 (46.2) | 2246 (45.4) | ||
| Diabetes, type 1 and 2, number (%) | <0.001 | 0.560 | ||||
| No | 7098 (72.2) | 4319 (78.6) | 3879 (78.3) | 3854 (77.8) | ||
| Yes | 2733 (27.8) | 1177 (21.4) | 1072 (21.7) | 1097 (22.2) | ||
| Smoke*, number (%) | <0.001 | 0.291 | ||||
| No | 7684 (78.2) | 4778 (86.9) | 4297 (86.8) | 4260 (86.0) | ||
| Yes | 2147 (21.8) | 718 (13.1) | 654 (13.2) | 691 (14.0) | ||
| Alcohol use*, number (%) | <0.001 | 0.125 | ||||
| No | 7892 (90.0) | 4775 (92.6) | 4604 (93.0) | 4563 (92.2) | ||
| Yes | 875 (10.0) | 383 (7.4) | 347 (7.0) | 388 (7.8) | ||
*Missing data were imputed for 830 (5.4%) and 1402 (9.1%) patients about smoking and alcohol using by Multiple Imputation utilizing Mice package (3.14) for R (4.2.2).
BP, blood pressure; DBP, diastolic blood pressure; IAs, intracranial aneurysms; SBP, systolic blood pressure.