|
Case mix, outcome and activity for all admissions in the Case Mix Programme Database (N = 129,647) |
||||
| N* |
Mean/median/n |
(SD/IQR/%) |
||
|
|
||||
| Case mix |
||||
| Mean (SD) age (years) |
129,641 |
58.7 |
(19.8) |
|
| Median (IQR) age (years) |
129,641 |
63 |
(47–73) |
|
| Gender male (n [%]) |
129,643 |
76,072 |
(58.7) |
|
| APACHE II† |
||||
| Mean (SD) Acute Physiology Score |
102,239 |
12.5 |
(6.7) |
|
| Mean (SD) APACHE II score |
102,237 |
16.5 |
(7.4) |
|
| Mean (SD) UK mortality probability |
99,281 |
0.255 |
(0.222) |
|
| Median (IQR) UK mortality probability |
99,281 |
0.181 |
(0.084–0.375) |
|
| Surgical status (n [%]) |
129,604 |
|||
| Nonsurgical |
71,473 |
(55.1) |
||
| Elective/scheduled surgery |
33,649 |
(26.0) |
||
| Emergency/urgent surgery |
24,270 |
(18.7) |
||
| Surgery, unknown classification |
212 |
(0.2) |
||
| Outcome‡ |
||||
| Mortality (n [%]) |
||||
| CMP unit |
123,610 |
25,142 |
(20.3) |
|
| Any critical care unit |
121,977 |
26,238 |
(21.5) |
|
| Hospital housing CMP unit |
122,062 |
34,912 |
(28.6) |
|
| Any hospital |
119,807 |
36,937 |
(30.8) |
|
| Activity |
||||
| Median (IQR) length of stay (days) |
||||
| CMP unit |
Survivors |
102,826 |
1.7 |
(0.8–4.0) |
| Nonsurvivors |
26,344 |
2.0 |
(0.7–6.1) |
|
| Any critical care unit |
Survivors |
99,896 |
2 |
(1–5) |
| Nonsurvivors |
27,133 |
2 |
(1–7) |
|
| Hospital housing CMP unit |
Survivors |
90,704 |
14 |
(7–27) |
| Nonsurvivors |
36,991 |
8 |
(2–19) |
|
| Any hospital |
Survivors |
85,761 |
16 |
(9–33) |
| Nonsurvivors |
38,651 |
9 |
(3–22) |
|
|
APACHE, Acute Physiology and Chronic Health Evaluation; CMP, Case Mix Programme; IQR, interquartile range; SD, standard deviation. * Number of nonmissing and nonexcluded observations. † Exclusions: aged younger than 16 years, unit stay less than 8 hours, admission for primary burns or coronary artery bypass grafting, readmission within the same hospital stay, direct transfer in from another critical care unit, missing all 12 physiology variables. ‡ Exclusions: readmission to the CMP unit within the same hospital stay. | ||||
Harrison et al. Critical Care 2004 9(Suppl 3):S1 doi:10.1186/cc3745 |
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