title: Observer reports of smoking status: a replication.
abstract: Observer and self-reports of abstinence from smoking were compared at 2-, 7-, 14-, 30-, 90-, and 180-day follow-ups and with biochemical verification at 180-day follow-up in a study of 630 self-quitters. Observer reports were often not returned (25-65%), rarely refuted self-reported abstinence (< 1%), and were often discordant with biochemical results (32%). These results replicate a prior finding (Hughes, 1990) that observer verification of smoking status during a prospective study of cessation is not very helpful.
authors.affiliation: University of Vermont.
authors.forename: J R
authors.initials: JR
authors.lastname: Hughes
mesh_terms: D000328:Adult; D001944:Breath Tests; D002248:Carbon Monoxide / Q000032:analysis; D003367:Cotinine / Q000032:analysis; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D016540:Smoking Cessation / Q000379:methods / Q000523:psychology*; D012931:Social Environment; D014342:Truth Disclosure
chemical_list: D002248:Carbon Monoxide; D003367:Cotinine