Table 7 Mortality according to duration of anaesthesia and type of surgery
Parameters | Patients N = 921 | % | Deaths (%) | X2 | p-value | OR (95% CI) |
|---|---|---|---|---|---|---|
Duration of Anaesthesia (Minutes) | ||||||
  ≤ 60 | 441 | 47.9 | 24(5.4) |  |  | 1 |
 61–120 | 341 | 37.0 | 28(8.2) | 2.37 | 0.12 | 1.6(0.9–2.7) |
 121–150 | 91 | 9.9 | 18(19.8) | 21.32 | 0.000 | 4.3(2.2–8.3) |
  > 150 | 48 | 5.2 | 13(27.1) | 28.98 | 0.000 | 6.6(3.0–13.8) |
Type of Surgery | ||||||
 Visceral  surgery/laparotomy | 304 | 33,0 | 64(21.0) | 22.71 | 0.000 | 7.3(2.9–18.6) |
 Orthopaedic | 142 | 15,4 | 5(3.5) |  |  | 1 |
 ENT | 126 | 13,7 | 1(0.8) | 2.66 | 0.13 | 0.2(0.0–1.9) |
 Hernia | 124 | 13,5 | 1(0.8) | 2.21 | 0.13 | 0.2(0.0–1.9) |
 Others | 78 | 8,5 | 4(5.1) | 0.33 | 0.56 | 1.5(0.3–5.6) |
 Plastics | 43 | 4,7 | 1(2.3) | 0.15 | 0.69 | 0.6(0.1–5.4) |
 Gynaecology | 34 | 3,7 | 0(0) |  |  |  |
 Urology | 26 | 2,8 | 0(0) |  |  |  |
 Ano-rectal malformations | 26 | 2,8 | 6(23.1) | 13.73 | 0.000 | 8.2(2.3–29.5) |
 EUA | 9 | 1,0 | 0(0) |  |  |  |
 Neurology | 9 | 1,0 | 1(11.1) | 1.27 | 0.25 | 3.4(0.4–32.9) |