Table 2

Adjusted rates of death per 1000 hospital episodes (95% CI)

Variable/YearDeath with 7 daysDeath within 30 daysDeath at hospital
All26.3(23.2 to 29.3)57.2(52.9 to 61.5)76.3(71.5 to 81.1)
Sex
 Male25.1(20.8 to 29.4)55.4(49.3 to 61.4)75.3(68.5 to 82.0)
 Female27.4(23.1 to 31.6)59.1(52.9 to 65.2)77.3(70.4 to 84.3)
Age (years)
17–292.7(−1.1 to 6.5)7.4(0.1 to 14.8)12.1(2.5 to 21.6)
 30–393.5(−0.5 to 7.4)12.8(4.4 to 21.2)18.1(7.9 to 28.3)
 40–4911.9(5.5 to 18.4)16.9(8.7 to 25.0)25.2(15.1 to 35.3)
 50–5912.4(6.8 to 18.1)24.4(16.5 to 32.3)35.6(26.2 to 45.1)
 60–6923.5(17.0 to 30.0)46.3(37.6 to 54.9)59.2(49.7 to 68.6)
 70–7937.9(30.4 to 45.5)74.4(64.5 to 84.4)102.7(91.5 to 113.9)
 80+56.3(44.8 to 67.9)121.0(105.8 to 136.1)149.1(133.0 to 165.3)
Admission source
 Home25.7(22.5 to 28.8)56.1(51.6 to 60.6)75.5(70.4 to 80.6)
 Other hospitals26.3(14.9 to 37.8)58.7(42.9 to 74.4)79.3(61.4 to 97.2)
 Nursing homes43.8(21.8 to 65.8)82.8(56.4 to 109.2)90.0(63.4 to 116.7)
Charlson Comorbidity Index
 021.1(17.2 to 25.0)33.3(28.5 to 38.1)40.2(35.0 to 45.5)
 1–330.1(15.4 to 44.9)55.4(35.9 to 74.8)69.6(48.0 to 91.2)
 4–636.0(22.6 to 49.4)77.3(57.9 to 96.7)95.9(74.6 to 117.1)
 7–931.3(19.1 to 43.6)75.0(55.8 to 94.1)100.0(78.4 to 121.7)
 10+31.5(24.9 to 38.1)91.9(81.0 to 102.8)133.7(120.8 to 146.5)
Procedure complexity
 Intermediate10.6(−2.5 to 23.8)29.0(5.1 to 52.8)33.0(9.5 to 56.5)
 Major26.4(22.6 to 30.2)56.1(51.0 to 61.3)75.5(69.7 to 81.2)
 Complex major30.3(22.5 to 38.1)67.2(56.5 to 78.0)87.7(76.0 to 99.4)
Organ system
 Abdominal wall20.8(−7.9 to 49.4)38.2(3.7 to 72.7)49.8(11.2 to 88.5)
 Colorectal26.7(23.5 to 29.8)58.2(53.6 to 62.7)77.5(72.5 to 82.5)
 General7.4(−7.2 to 22.0)10.5(−10.2 to 31.3)10.6(−10.2 to 31.4)
Primary diagnosis
 Gastrointestinal17.7(12.0 to 23.4)41.3(32.7 to 50.0)58.9(48.6 to 69.2)
 General65.6(55.8 to 75.3)113.3(101.1 to 125.4)149.3(136.0 to 162.7)
 Hernia/Obstruction15.0(10.4 to 19.6)43.5(35.8 to 51.2)54.4(45.9 to 62.9)
 Malignancy9.4(5.8 to 12.9)34.1(27.7 to 40.6)47.9(40.5 to 55.2)