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Table 1 Study characteristics

From: Outcome measures for airway clearance techniques in children with chronic obstructive lung diseases: a systematic review

Article

Design

Pathology

n

ACT

Duration

Type of outcome measures

LOE

PFT

SP

OX

EX

IM

DE

PRO

OTH

Denton 1962 [12]

comparative

CF

23

CPT

1x

•

•

      

4

Maxwell 1979 [13]

RXO

CF

14

CPT

1x

•

•

      

2b

Weller 1980 [24]

comparative

CF

20

CPT

2x

•

•

      

4

Zach 1982 [37]

comparative

CF

10

CPT, exercise

17 d + 8 w

•

       

4

Desmond 1983 [38]

RXO

CF

10

CPT

3 w

•

•

      

2b

De Boeck 1984 [30]

RXO

CF

9

CPT

1x

•

•

      

2b

Andreasson 1987 [49]

uncontrolled

CF

7

Exercise

30 m

•

  

•

•

  

•

4

Van Asperen 1987 [54]

RXO

CF

10

CPT, PEP

4 w

•

•

    

•

 

2b

Bain 1988 [55]

RCT

CF

38 (19/19)

CPT

2 w

•

•

•

     

2b

Reisman 1988 [56]

RCT

CF

63 (30/33)

CPT, FET

3 y

•

  

•

 

•

 

•

1b

Cerny 1989 [57]

RCT

CF

17 (8/9)

CPT, exercise

13 d

•

•

 

•

    

2b

Maayan 1989 [31]

RCT

CF

25 (6/5/8/6)

CPT

1x

•

       

2b

Asher 1990 [58]

RCT

Asthma

38 (19/19)

CPT

2 d

•

       

1b

Oberwaldner 1991 [59]

uncontrolled

CF

18

PEP

16 d

•

       

4

Steen 1991 [60]

RXO

CF

28

CPT, PEP, FET

4 w

•

•

    

•

 

1b

Van der Schans 1991 [32]

RXO

CF

8

PEP

1x

•

   

•

   

2b

Pfleger 1992 [33]

RXO

CF

14

PEP, AD

1x

•

•

      

1b

Bauer 1994 [39]

RCT

CF

73 (36/37)

CPT

12 d

•

    

•

  

1b

Natale 1994 [34]

RXO

CF

9

IPV

5 d

•

•

      

2b

Homnick 1995 [40]

RCT

CF

16 (8/8)

CPT, IPV

180 d

•

    

•

•

 

2b

McIlwaine 1997 [41]

RCT

CF

36 (18/18)

CPT, PEP

1 y

•

   

•

•

  

1b

Plebani 1997 [42]

Uncontrolled

HIV

8

PEP

1 y

•

    

•

  

4

Homnick 1998 [43]

RCT

CF

33 (16/17)

CPT, OPEP

9 d

•

    

•

 

•

2b

Newhouse 1998 [35]

RXO

CF

10

CPT, OPEP, IPV

1x

•

•

      

2b

Van Winden 1998 [44]

RXO

CF

22

PEP, OPEP

2 w

•

       

1b

Fauroux 1999 [36]

RXO

CF

16

FET, NIV

1x

•

•

•

   

•

 

1b

Gondor 1999 [45]

RCT

CF

20 (8/12)

CPT, OPEP

2 w

•

  

•

    

2b

Williams 2000 [14]

RXO

CF

26

CPT, ACBT

1x

•

•

     

•

2b

McIlwaine 2001 [46]

RCT

CF

40 (20/20)

PEP, OPEP

1 y

•

   

•

•

 

•

2b

Williams 2001 [15]

RXO

CF

15

CPT, ACBT

1x

•

      

•

2b

Samransamruajkit 2003 [47]

RCT

Asthma

40 (20/20)

OPEP

2 d

•

 

•

    

•

1b

Marks 2004 [27]

RXO

CF

10

CPT, IPV

1x

•

•

    

•

 

2b

Phillips 2004 [16]

RXO

CF

10

HFCWO, ACBT

2x

•

•

    

•

 

2b

Darbee 2005 [17]

RXO

CF

15

HFCWO, PEP

2x

•

 

•

     

1b

Lagerkvist 2006 [18]

RXO

CF

15

PEP, OPEP

1x

•

 

•

     

1b

Hristara-Papadopoulou 2007 [29]

RXO

CF

35

CPT, ACBT

1x

 

•

      

2b

Indinnimeo 2007 [53]

RCT

multiple

19 (12/7)

CPT

1 m

•

       

2b

Tannenbaum 2007 [19]

RCT

CF

18 (9/9)

CPT

1x

•

       

2b

Didario 2009 [20]

RCT

Asthma

40 (20/20)

CPT

6x in 24 h

•

 

•

     

2b

Bannier 2010 [21]

Uncontrolled

CF

10

Breathing exercises

1x

•

•

  

•

   

2b

McIlwaine 2010 [48]

RXO

CF

18

CPT, AD

1 y

•

    

•

•

•

1b

Reix 2012 [22]

RXO

CF

32

ACBT, exercise

1x

•

•

    

•

 

1b

Abbas 2013 [23]

Uncontrolled

CF

25

PEP/OPEP

1x

•

       

2b

McIlwaine 2013 [50]

RCT

CF

107 (51/56)

PEP, HFCWO

1 y

•

    

•

•

 

2b

Gokdemir 2014 [51]

RXO

PCD

24

CPT, HFCWO

5 d

•

 

•

   

•

 

2b

Hortal 2014 [25]

Uncontrolled

CF

8

AD, PEP

1x

•

       

4

Voldby 2018 [26]

Uncontrolled

CF

10

Exercise, PEP

2x

•

       

4

Ghasempour 2019 [52]

RCT

CF

40 (20/20)

PEP

6 d

•

 

•

  

•

  

1b

Vendrusculo 2019 [28]

RXO

CF

12

AD, PEP

1x

•

  

•

    

2b

  1. Abbreviations: ACBT active cycle of breathing technique, ACT airway clearance technique, AD autogenic drainage, CF cystic fibrosis, CPT chest physical therapy, DE disease exacerbation parameters, EX exercise, FET forced expiration technique, HFCWO high frequency chest wall oscillation, IM imaging, IPV intrapulmonary percussive ventilation, LOE level of evidence, n number of subjects, NIV non-invasive ventilation, (O) PEP (oscillatory) positive expiratory pressure, OTH other type of measures, OX oxygenation, PCD primary ciliary dyskinesia, PFT pulmonary function test, PRO patient-reported outcome, RCT randomized clinical trial, RXO randomized crossover trial, SP expectorated sputum