title: Occult sleep apnea in a recruited sample of older adults with insomnia.
abstract: Although costly polysomnography (PSG) is not routinely performed with people with insomnia, it may be more necessary with recruited older adults with insomnia because this population may pose a greater risk of veiled sleep disorders compared with younger age groups and with referred samples. The present PSG screening of a recruited sample of older adults with insomnia found a 29%-43% rate of undiagnosed sleep apnea (SA), depending on whether an apnea-hypopnea index of 15 or 5 was used, after interviews had already screened out obvious cases of SA. Also, PSGs revealed a 4% rate of occult periodic limb movements. A discriminant analysis identified overweight men reporting dry mouth at highest risk for occult SA, with an apnea-versus-insomnia classification success rate of 78%. Using PSG evaluations in research on insomnia in recruited older adults is requisite to preclude substantial representation of occult SA.
authors.affiliation: Department of Psychology, University of Memphis, Tennessee 38152-6400, USA. lichstein@mail.psyc.memphis.edu
authors.forename: K L
authors.initials: KL
authors.lastname: Lichstein
authors.forename: B W
authors.initials: BW
authors.lastname: Riedel
authors.forename: K W
authors.initials: KW
authors.lastname: Lester
authors.forename: R N
authors.initials: RN
authors.lastname: Aguillard
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016009:Chi-Square Distribution; D016002:Discriminant Analysis; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000706:statistics & numerical data; D008875:Middle Aged; D017286:Polysomnography; D012891:Sleep Apnea Syndromes / Q000175:diagnosis / Q000453:epidemiology*; D007319:Sleep Initiation and Maintenance Disorders / Q000453:epidemiology*