SAPS III: Simplified acute physiology score 3

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The Simplified Acute Physiology Score III (SAPS 3) is an ICU scoring system and is used to predict the mortality risk for patients presenting at the ICU.

Research authors: Philipp G.H. Metnitz, Rui P. Moreno, Eduardo Almeida, Barbara Jordan, Peter Bauer, Ricardo Abizanda Campos, Gaetano Iapichino, David Edbrooke, Maurizia Capuzzo, Jean-Roger Le Gall, on behalf of the SAPS 3 investigators

Public
Intensive care
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The predicted mortality risk in the ICU is:

The predicted mortality risk in the ICU is: %

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Conditional information

The SAPS 3 is an externally validated tool that accurately predicts ICU mortality. The score was evaluated and compared with the APACHE II and the SAPS 2. The performance of the SAPS 3 was similar to that of the APACHE II and the SAPSII
Discrimination of the SAPS 3 model showed c-statistics up to 0.89. The C-SAPS 3 score appeared to have the best calibration curve on visual inspection.

Y Sakr, C. Krauss, ACKB Amaral, et al. Comparison of the performance of SAPS II, SAPS 3, APACHE II, and their customized prognostic models in a surgical intensive care unit, BJA: British Journal of Anaesthesia, Volume 101, Issue 6, 1 December 2008, Pages 798–803

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Additional information

Details

Model author

Evidencio Community

Model ID

1114

Version

1.33

Revision date

2018-08-27

Specialty

Intensive care

Model type

Custom model (Conditional)

MeSH terms

Intensive Care Unit

Rating

Status

Public

Condition	Formula

Study characteristics

Additional information

A total of 22,791 admissions were recorded in the 309 participating ICUs during the study period. For patients who were admitted more than once (n=1,455), only the first admission was included, giving 21,336 admitted patients. Patients who were <16 years of age (n=628), those without ICU admission or discharge data (n=1,074), and those with records that lacked an entry in the field “ICU outcome” (n=57) were excluded. The Basic SAPS 3 Cohort thus comprises 19,577 patients from 307 ICUs.

For the development of a predictive model for hospital mortality as outcome, patients with a missing entry in the field of “vital status at hospital discharge” (n=2,540) or an entry of “still in the hospital” at the end of the follow-up period (n=253) were further excluded. The SAPS 3 Hospital Outcome Cohort thus comprises 16,784 patients from 303 ICUs.

Study Population

Total population size: 19559

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Continuous characteristics

Name	Q1	Median	Q3	Unit
Age	49	63	74	years
ICU Length of Stay	1	2	6	days
SAPS II score	20	30	42	score
SOFA score	6	9	11	score

Categorical characteristics

Name	Subset / Group	Nr. of patients
Origin	Home	2810
Origin	Same hospital	13926
Origin	Chronic care facility	74
Origin	Public place	519
Origin	Other hospital	2125
Origin	Other	80
Origin	Missing	43
Intra-hospital location before ICU admission	Operating room	7537
Intra-hospital location before ICU admission	Other	552
Intra-hospital location before ICU admission	Other ICU	698
Intra-hospital location before ICU admission	Recovery room	482
Intra-hospital location before ICU admission	Ward	3411
Intra-hospital location before ICU admission	Missing	916
Intra-hospital location before ICU admission	Emergency room	5419
Intra-hospital location before ICU admission	Intermediate care unit/ high dependency unit	562
ICU admission status	Planned admission	6750
ICU admission status	Unplanned admission	12338
ICU admission status	Missing	489
Acute infection at ICU admission	No infection	15254
Acute infection at ICU admission	Clinically improbable/colonization	342
Acute infection at ICU admission	Clinically probable/documented	2761
Acute infection at ICU admission	Microbiologically documented	1206
Acute infection at ICU admission	Missing	13
Surgical status	No surgical procedure	8437
Surgical status	Scheduled surgery	6800
Surgical status	Emergency surgery	3321
Surgical status	Missing	1019
ICU discharge - destination	Home	438
ICU discharge - destination	Same hospital	14946
ICU discharge - destination	Other hospital	1029
ICU discharge - destination	Missing	3164
Intrahospital discharge	IMCU/HDU	2222
Intrahospital discharge	Other	303
Intrahospital discharge	Other ICU	583
Intrahospital discharge	Recovery room	306
Intrahospital discharge	Ward	12250
Intrahospital discharge	Missing	3855
ICU discharge - status	Planned discharge	14872
ICU discharge - status	Unplanned discharge	1595
ICU discharge - status	Missing	3110
Outcome	ICU mortality (%)	15.2

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