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Table 7 Sleep efficiency (%) in randomized controlled trials of APAP versus CPAP

From: Auto-titrating versus fixed continuous positive airway pressure for the treatment of obstructive sleep apnea: a systematic review with meta-analyses

Study

PMID

Baseline AHI (SD)

[eligibility]

Baseline ESS (SD)

Duration (design)

Interventions

Number analyzed

Baseline (SD)

Change

(final)

Net difference

or difference

95% CI

P

Dropout (%)

Study quality

Konermann 1998 [31]

9515848

38 (14)

[> 20}

nd

3 to 6 months

(PL)

APAP

25

94.5 (5.4)

2

6

nd

NS

4

B

    

CPAP

23

89.2

(13.7)

-4

     

Nolan 2007 [14]

17326544

15 (8)

[≥5)

12.3 (4)

2 months

(PL)

APAP

29

79 (9)

4

-1

-4.3 to 2.3a

0.39

15

B

    

CPAP

29

79 (9)

5

     

Resta 2004 [24]

15679008

47 (11)

[> 30]

13.9 (3.2)

1 month

(PL)

APAP

10

86.9

(8)

-0.5

-2.5

nd

nd

0

C

    

CPAP

10

84.2

(4.9)

2

     
  1. AHI: apnea-hypopnea index (events/hour); APAP: auto-titrating CPAP; CPAP: continuous positive airway pressure; ESS: Epworth Sleepiness Scale; nd: no data; NS: non-significant; PL = parallel design. aEstimated from reported data.