Table 4 Variation in relative differences in total costs between on-demand and planned relaparotomy strategies across various clinical subgroups
Relaparotomy strategy | ||||||
|---|---|---|---|---|---|---|
On demand | Planned | Differencea | ||||
Mean costs p.p. | n | Mean costs p.p. | n | % from planned | P valueb | |
Overall | 66,216 | 112 | 84,152 | 113 | -23.8% | |
Comorbidity | 0.26 | |||||
No | 64,948 | 48 | 89,738 | 41 | -32.8% | |
Yes | 67,168 | 64 | 80,971 | 72 | -17.1% | |
Apache II | 0.58 | |||||
11-20 | 66,956 | 96 | 84,683 | 94 | -22.3% | |
>20 | 61,777 | 16 | 81,525 | 19 | -32.3% | |
Etiology | 0.09 | |||||
Inflammation (1) | 40,810 | 4 | 81,074 | 5 | -21.7% | |
Perforation (2) | 62,236 | 63 | 88,985 | 67 | -37.0% | |
Ischemia (1) | 59,591 | 6 | 72,080 | 8 | -- | |
Anastomotic leakage (3) | 76,171 | 35 | 72,751 | 27 | 6.8% | |
Other (4) | 77,153 | 4 | 100,149 | 6 | -6.9% | |
Elimination of infectious source | 0.81 | |||||
No | 71,113 | 10 | 90,254 | 11 | -24.2% | |
Yes | 65,736 | 102 | 83,494 | 102 | -18.3% | |
Localization | 0.45 | |||||
Upper GT (1) | 69,828 | 30 | 81,146 | 27 | -25.9% | |
Lower GT (2) | 67,402 | 70 | 82,446 | 74 | -42.7% | |
Biliary tract (3) | 63,496 | 2 | 100,115 | 5 | -28.8% | |
Appendix (3) | 32,075 | 3 | 26,575 | 1 | -- | |
Pancreas (3) | 59,352 | 5 | 92,446 | 2 | -- | |
Gynecol (3) | 41,650 | 2 | 67,720 | 1 | -- | |
Other (3) | 145,821 | 3 | -- | |||
Extent of index operation | 0.49 | |||||
1 quadrant | 66,079 | 9 | 73,381 | 16 | 3.0% | |
2 quadrants | 62,439 | 34 | 84,791 | 26 | -30.6% | |
Diffuse | 68,096 | 70 | 86,102 | 69 | -24.8% | |
Nature of contamination | 0.18 | |||||
Clear (1) | 59,306 | 6 | 97,791 | 8 | -25.9% | |
Turbid (2) | 57,179 | 18 | 96,672 | 29 | -42.7% | |
Purulent (3) | 55,746 | 43 | 77,003 | 30 | -28.8% | |
Fecal (4) | 84,707 | 41 | 81,977 | 41 | -2.4% | |
Bile (3) | 40,281 | 4 | 61,984 | 3 | - | |
Survival (at 12 mo) | ||||||
No | 73,275 | 80 | 85,326 | 72 | -17.8% | 0.13 |
Yes | 48,569 | 32 | 82,089 | 41 | -38.6% | |