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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.