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Table 1 Main characteristics of included studies

From: Prediction of severe community-acquired pneumonia: a systematic review and meta-analysis

Study first author

Year of publication

Studied scores

End point

Prevalence end point

Uni- versus multicentric

Prospective/Retrospective

Ambulatory/Hospitalized

Number

NTBR

Major criteria excluded

Ananda-Rajah

2008

PSI/CURB-65

ICU admission

10.50%

Uni

R

H

408

Included

n

Angus

2002

PSI/ATS 2001/ATS 1993/URB

ICU admission

12.70%

Multi

P

H

1,339

Included

n

Brown

2009

IDSA-ATS 2007/SMART-COP/CURB-65/SCAP

IT in ICU/IT/ICU admission

12.35%

Uni

R

A+H

2,413

Excluded

n

Buising

2006

PSI/ATS 2001/CURB/CURB-65

ICU admission/death or ICU

6.60%

Uni

P

A+H

392

Included

n

Buising

2007

PSI/CURB/CURB-65/CORB

Vent/vaso ICU

6.30%

Uni

P

A+H

330

Included

n

Calbo

2004

PSI

ICU admission

3.30%

Uni

P

H

362

Included

n

Capelastegui

2006

CURB-65

ICU admission

4.09%

Uni

R

H

1,100

Included

n

Chalmers

2008

CRB-65/CURB-65

Vent/vaso

10.20%

Multi

P

A+H

1,007

Excluded

n

Chalmers

2011

IDSA-ATS 2007/SMART-COP/CURB-65/SCAP/CURB/CRB-65/PSI, ATS 2001 minor

Vent/vaso

ICU admission

6.4%

7.6%

Uni

P

H

1,062

Excluded

y

Charles

2008

SMART-COP/CURB-65/PSI

Vent/vaso

10.30%

Multi

P

A+H

882

Included

n

Davis

2010

SMART-COP/SMARTACOP

Vent/vaso

21.00%

Uni

P

H

184

Excluded

n

Escobar

2008

Abbreviated PSI

ICU admission

12.30%

Uni

R

H

6,147

Included

n

Espana

2006

ATS 2001/PSI/CURB-65/SCAP

Death, vent, or septic shock

7.10%

Uni

P

A+H

1,057

Included

n

   

Death, vent or septic shock

5.90%

Uni

P

A+H

719

Included

n

   

Death, vent or septic shock

11.9%

Multi

R

H

1,121

Included

n

Espana

2010

SCAP/PSI/CURB-65

ICU admission

NA

Multi

R

H

712

Included

n

Ewig

2000

PSI

ICU admission

9%

Uni

P

H

232

Included

n

Ewig

2004

ATS 2001/PSI/CURB/CRB/URB/

ICU admission

16.70%

Uni

p

H

696

Excluded

n

Ewig

1998

ATS 1993/ATS 2001

ICU admission

16%

Uni

p

H

332

Excluded

n

Feagan

2000

PSI

ICU admission

13.60%

Multi

r

H

858

Included

n

Frei

2004

SBP/pH/O2 saturation/pulse

ICU admission

17%

Uni

r

H

782

Included

n

Fukuyama

2011

IDSA-ATS 2007/SMART-COP/CURB-65/SCAP/PSI/A-DROP

ICU admission

Death, vent, or septic shock

7.6%

11.9%

Uni

p

H

505

Excluded

n

Garcia-Vidal

2008

PSI

Early death

2.3%

Uni

p

H

2,457

Included

 

Garau

2008

PSI

ICU admission

5%

Multi

r

H

3,233

Included

n

Kamath

2003

CURB

ICU admission

10%

Uni

p

H

100

Excluded

n

Lamy

2004

PSI

ICU admission

14%

Uni

r

H

152

Included

n

Liapikou

2009

IDSA-ATS 2007/ATS 2001/PSI

ICU admission

11%

Uni

p

H

2,102

Excluded

n(y)

Man

2007

PSI/CURB-65/CRB-65/ATS 2001

ICU admission

4%

Uni

p

H

1,016

Included

n

Marrie

2007

PSI/CURB-65

ICU admission

10%

Multi

p

H

3,675

Included

n

Neill

1996

CURB

Mortality and ICU

11%

Uni

p

H

251

Excluded

n

Phua

2009

PSI/CURB-65/IDSA-ATS 2007

ICU admission

15%

Uni

p

H

1,017

Excluded

y

Putinati

2003

PSI

ICU admission

10%

Uni

p

H

229

Included

n

Renaud

2007

PSI

ICU admission

3.70%

Multi

p

H

566

Included

n

  

PSI

ICU admission

10.50%

Multi

p

H

761

Included

n

Renaud

2009

REA-ICU

Early ICU admission < 3

4.40%

Multi

p

A+H

4,593

Excluded

y

Restrepo

2008

PSI/ATS 2001

ICU admission

19.90%

Multi

r

H

730

Excluded

n

Riley

2004

ATS 2001/PSI

ICU admission

23.69%

Uni

r

H

498

Excluded

n

Roson

2001

PSI

ICU admission

8%

Uni

p

H

533

Included

n

Shah

2010

CURB-65/PSI

ICU admission

23.30%

Uni

p

A+H

150

Included

n

Van der Eerden

2004

PSI

ICU admission

8.00%

Uni

p

H

260

Included

n

  1. A, ambulatory; H, hospitalized; ICU, intensive care unit; IT, intensive treatment; P, prospective; R, retrospective; n, number; y, yes; NTBR, not to be resuscitated; Vent, ventilation; Vaso, vasopressor.