Aim: To map the prevalence of smoking among patients with narcolepsy-cataplexy (NC), narcolepsy without cataplexy (N) and idiopathic hypersomnia (IH) and verify whether smoking prevalence in NC patients is higher than in N and IH patients in Central Europe. Methods: We asked 172 adult patients about smoking (111 of them with NC, 37 with N and 24 with IH) using our own structured questionnaire during their outpatient examination or during phone interview.
Results: Daily smokers represented 46.8% in the NC group, 18.9% in N and 12.5% in the IH group. The prevalence of smoking in the N and IH group together is 16.4%, i.e. significantly lower than the prevalence in the NC group (p = 0.0006, two-sided Fisher test).
Conclusion: The prevalence of daily smoking among patients with NC is more than twice as high as in the Czech general adult population (18%), and higher than smoking prevalence among N and IH patients together.