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Fig. 4 | BMC Pulmonary Medicine

Fig. 4

From: Switch of noninvasive ventilation (NIV) to continuous positive airway pressure (CPAP) in patients with obesity hypoventilation syndrome: a pilot study

Fig. 4

Changes in ESS, PSQI and SRI scores one month after the switch to CPAP. Definition of abbreviations: NIV: Non Invasive Ventilation; CPAP: Continuous Positive Airway Pressure; ESS: Epworth Sleepiness Scale, PSQI: Pittsburgh Sleep Quality Index; SRI: Severe Respiratory Insufficiency questionnaire; NS: no significant difference; *: significant difference p < 0.05

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