Healthcare resource utilisation and costs in patients with treated obstructive sleep apnea

Obstructive sleep apnea (OSA) is a highly prevalent yet underdiagnosed disease that creates a large economic burden on the United States healthcare system. In this retrospective study, we tested the hypothesis that adherence to positive airway pressure (PAP) therapy, the 'gold standard' treatment for OSA, is associated with reduced healthcare resource utilisation and costs. We linked de-identified payer-sourced medical claims and objective PAP usage data for patients newly diagnosed with OSA. Inverse probability of treatment weighting was used to create balanced groups of patients who were either adherent, intermediately adherent, or non-adherent to PAP therapy. From a sample of 179, 542 patients (average age 52. 5 years, 61% male), 37% were adherent, 40% intermediate, and 23% non-adherent. During the first year, PAP adherence was significantly associated with fewer emergency room visits (mean SD adherent: 0. 39 1. 20 versus intermediate: 0. 47 1. 30, p < 0. 001; versus non-adherent: 0. 54 1. 44, p < 0. 001), all-cause hospitalisations (mean SD adherent: 0. 09 0. 43 versus intermediate: 0. 12 0. 51, p < 0. 001; versus non-adherent: 0. 13 0. 55, p < 0. 001), and lower total costs (mean SD adherent 5874 8045 versus intermediate 6523 9759, p < 0. 001; versus non-adherent 6355 10, 517, p < 0. 001). Results were similar in the second year of PAP use. These results provide additional evidence from a large, diverse sample to support the diagnosis and treatment of OSA and encourage long-term adherence to PAP therapy.