Table 2 Deviations of expected and observed mortality frequencies and their significance for several creatinine clearance intervals.
From: Creatinine clearance versus serum creatinine as a risk factor in cardiac surgery
CC [ml/min] | Cases # | Cases % | OM # | EM # | NLS (EM-OM) | RAMQ (OM/EM) | P |
|---|---|---|---|---|---|---|---|
CC < 15 | 35 | 0.4 % | 3 | 2.33 | -0.67 | 1.29 | 0.73 |
15 ≤ CC < 25 | 94 | 1.2 % | 14 | 10.17 | -3.83 | 1.38 | 0.18 |
25 ≤ CC < 35 | 284 | 3.5 % | 17 | 12.76 | -4.24 | 1.33 | 0.245 |
35 ≤ CC < 45 | 623 | 7.7 % | 29 | 23.49 | -5.51 | 1.23 | 0.24 |
45 ≤ CC < 55 | 1054 | 13.0 % | 43 | 29.74 | -13.26 | 1.45 | 0.011 |
55 ≤ CC < 65 | 1236 | 15.2 % | 15 | 27.01 | 12.01 | 0.56 | 0.006 |
65 ≤ CC < 75 | 1343 | 16.5 % | 21 | 23.39 | 2.39 | 0.9 | 0.64 |
75 ≤ CC < 85 | 1123 | 15.1 % | 14 | 17.28 | 3.28 | 0.81 | 0.46 |
85 ≤ CC < 95 | 854 | 10.5 % | 11 | 11.35 | 0.35 | 0.97 | 0.96 |
95 ≤ CC < 105 | 525 | 6.5 % | 3 | 5.77 | 2.77 | 0.52 | 0.24 |
105 ≤ CC < 115 | 362 | 4.4 % | 2 | 4.35 | 2.35 | 0.46 | 0.27 |
115 ≤ CC < 125 | 221 | 2.7 % | 1 | 2.33 | 1.33 | 0.43 | 0.57 |
125 ≤ CC | 384 | 4.7 % | 1 | 4.31 | 3.31 | 0.23 | 0.07 |
total | 8138 | 100 % | 174 | 174.34 | 0.34 | 1 | |
CC < 55 | 2091 | 25.7 % | 106 | 78.55 | -27.45 | 1.35 | < 0.001 |
CC ≥ 55 | 6047 | 74.3 % | 68 | 95.79 | 27.79 | 0.71 | < 0.001 |