Table 1 Patient characteristics per mode of reversal and time period

N

7932 (88%)

1105 (12%)

9037 (100%)

4549 (82%)

1006 (18%)

5555 (100%)

Sex (F)

4116 (52%)

580 (52%)

4696 (52%)

2344 (52%)

506 (50%)

2850 (51%)

Mean age, years (SD)

54.0 (16.6)

56.8 (16.3)

54.4 (17.0)

53.8 (17.0)

57.6 (16.6)

54.5 (16.5)

 18–39

1745 (22%)

198 (18%)

1943 (22%)

1068 (23%)

169 (17%)

1237 (22%)

 40–59

2767 (35%)

339 (31%)

3106 (34%)

1508 (33%)

309 (31%)

1817 (33%)

 60–69

1879 (24%)

303 (27%)

2182 (24%)

956 (21%)

247 (25%)

1203 (22%)

 70–79

1219 (15%)

218 (20%)

1437 (16%)

838 (18%)

229 (23%)

1067 (19%)

 80–97

322 (4%)

47 (4%)

369 (4%)

179 (4%)

52 (5%)

231 (4%)

ASA 1

1896 (24%)

168 (15%)

2064 (23%)

787 (17%)

83 (8%)

870 (16%)

ASA 2

3599 (45%)

456 (41%)

4055 (45%)

2097 (46%)

422 (42%)

2519 (45%)

ASA 3

1241 (16%)

227 (21%)

1468 (16%)

1061 (23%)

288 (29%)

1349 (24%)

ASA 4

71 (1%)

9 (1%)

80 (1%)

86 (2%)

26 (3%)

112 (2%)

ASA not documented

1125 (14%)

245 (22%)

1370 (15%)

518 (11%)

187 (19%)

705 (13%)

Renal failure ^#

435 (5%)

90 (8%)

525 (6%)

227 (5%)

111 (11%)

338 (6%)

BMI < 18.5

199 (3%)

23 (2%)

223 (2%)

114 (2%)

18 (2%)

133 (2%)

BMI 18.5–25

3130 (39%)

369 (33%)

3543 (39%)

1848 (41%)

359 (36%)

2227 (40%)

BMI 25–30

2710 (34%)

398 (36%)

3140 (34%)

1582 (35%)

344 (34%)

1938 (35%)

BMI 30–35

1022 (13%)

165 (15%)

1187 (13%)

568 (12%)

144 (14%)

712 (13%)

BMI 35–40

293 (4%)

54 (5%)

347 (4%)

169 (4%)

52 (5%)

221 (4%)

BMI > 40

111 (1%)

27 (2%)

138 (2%)

60 (1%)

21 (2%)

81 (1%)