Statistically significant p values (<0.05) are shown in bold. The difference in the mean change is computed as the difference in PC values compared with SU values. Descriptive analyses of each group with complete cases.

*Mean (one-sided 95% CI, lower bound).

†Non-inferiority test with a margin of −2.

‡P<0.001 for the paired comparison of outcome measures examining the changes from baseline to 6 months.

§Multiple imputations were used.

¶Includes all costs associated with diagnosis, treatment and follow-up for the period up to 6 months (see online supplementary appendix etable 6).

EQ-5D, EuroQoL five-dimensions questionnaire; ESS, Epworth Sleepiness Scale; ITT, intention-to-treat analysis; PC, primary care; SU, sleep unit.