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Table 1 Baseline characteristics of all patients over 80 years of age vs. propensity-matched patients

From: Comparison of surgical and conservative treatment outcomes for type a aortic dissection in elderly patients

  All patients over 80 years of age Propensity-matched patients
Variables Conservative Surgical Absolute Standardised Difference,% Conservative Surgical Absolute Standardised Difference,%
n = 2017 n = 1241 n = 845 n = 845
Age, years; median [IQR] 86.0 [83.0–89.0] 83.0 [81.0–86.0] 88.2 84.0 [81.0–87.0] 84.0 [82.0–86.0] 1.9
Gender (male), n (%) 524 (26.0) 315 (25.4) 1.4 234 (27.7) 227 (26.9) 1.6
BMI, n(%)
 < 18.5 307 (15.2) 172 (13.9) 3.9 129 (15.3) 121 (14.3) 0.3
 18.5–25.0 867 (43.0) 786 (63.3) 42.2 508 (60.1) 525 (62.1) 4.1
 >25.0 188 (9.3) 189 (15.2) 16.4 126 (14.9) 113 (13.4) 4.9
 BMI data missing 655 (32.5) 94 (7.6) 94.1 82 (9.7) 86 (10.2) 1.6
 Ambulance use, n (%) 1640 (81.3) 1038 (83.6) 6.3 680 (80.5) 686 (81.2) 0.3
Admission pathway, n (%)
 Home 1598 (79.2) 975 (78.6) 1.6 708 (83.8) 697 (82.5) 4.0
 Other hospital or clinic 172 (8.5) 244 (19.7) 28.0 118 (14.0) 128 (15.1) 4.0
 Nursing-care facility 247 (12.2) 22 (1.8) 79.3 19 (2.2) 20 (2.4) 0.8
 Hypertension, n (%) 867 (43.0) 695 (56.0) 26.2 476 (56.3) 458 (54.2) 5.0
 Diabetes mellitus, n (%) 88 (4.4) 114 (9.2) 16.7 67 (7.9) 65 (7.7) 0.9
 COPD, n (%) 68 (3.4) 45 (3.6) 1.4 29 (3.4) 35 (4.1) 3.0
 Chronic kidney disease, n (%) 63 (3.1) 54 (4.4) 6.0 35 (4.1) 35 (4.1) 1.2
 Ischemic heart disease, n (%) 162 (8.0) 163 (13.1) 15.1 107 (12.7) 109 (12.9) 0.4
 Chronic Liver disease, n (%) 32 (1.6) 42 (3.4) 9.9 23 (2.7) 22 (2.6) 0.7
 Cancer, n (%) 91 (4.5) 35 (2.8) 10.2 30 (3.6) 32 (3.8) 0.6
 Dementia, n (%) 191 (9.5) 80 (6.4) 12.3 70 (8.3) 55 (6.5) 7.2
JCS at admission, n (%)
 (alert) 937 (46.5) 890 (71.7) 56.1 555 (65.7) 562 (66.5) 1.0
 1–3 (delirious) 410 (20.3) 206 (16.6) 10.0 180 (21.3) 161 (19.1) 4.8
 10–30 (somnolent) 161 (8.0) 57 (4.6) 16.2 48 (5.7) 45 (5.3) 0.0
 100–300 (coma) 509 (25.2) 88 (7.1) 70.7 62 (7.3) 77 (9.1) 4.9
 Cardiopulmonary arrest on arrival,n(%) 201 (10.0) 5 (0.4) 150.9 1 (0.1) 5 (0.6) 4.6
 Cardiac tamponade, n (%) 321 (15.9) 178 (14.3) 4.5 109 (12.9) 124 (14.7) 1.5
 Shock, n (%) 153 (7.6) 226 (18.2) 27.5 93 (11.0) 96 (11.4) 3.6
 Coronary malperfusion, n (%) 50 (2.5) 24 (1.9) 4.0 93 (11.0) 96 (11.4) 4.2
 Limb ischemia, n (%) 99 (4.9) 71 (5.7) 3.5 36 (4.3) 46 (5.4) 3.0
 Aortic insufficiency, n (%) 41 (2.0) 143 (11.5) 29.7 33 (3.9) 50 (5.9) 7.5
Hospital volume, n (%)
 Low 1302 (64.6) 571 (46.0) 37.2 465 (55.0) 452 (53.5) 4.0
 Middle 548 (27.2) 448 (36.1) 18.6 285 (33.7) 306 (36.2) 5.4
 High 167 (8.3) 222 (17.9) 25.1 95 (11.2) 87 (10.3) 1.9