Participants who reported being lifetime
nonsmokers or ex-smokers at baseline and who
responded negatively at follow-up to the question,
“Since your last interview in (MO/YR),
did you smoke at least 100 cigarettes?” were
identified as nonsmokers and ex-smokers, respectively.
Participants who reported being
current smokers at the baseline interview but
denied having smoked 100 or more cigarettes
during the follow-up period were also identified
as ex-smokers.
NESARC investigators ascertained mental
disorders with the Alcohol Use Disorder and
Associated Disabilities Interview Schedule---
Diagnostic and Statistical Manual of Mental
Disorders, Fourth Edition version administered
at baseline and follow-up. Participants
who did not meet the criteria for a lifetime
disorder at baseline but met the diagnostic
criteria in the period between the baseline and
follow-up interviews were rated as new-onset or
incident cases.32 We included 8 disorders in
our analyses: major depressive episodes, dysthymia,
manic episodes, generalized anxiety
disorder, panic disorder, social anxiety disorder,
specific phobias, and posttraumatic stress
disorder (PTSD). PTSD was assessed only in
the wave 2 interview. However, participants
were asked whether the time they first experienced
the symptoms was since the baseline
interview. Only PTSD episodes that started
after the baseline interview were categorized as
new-onset PTSD.
Participants who reported being lifetimenonsmokers or ex-smokers at baseline and whoresponded negatively at follow-up to the question,“Since your last interview in (MO/YR),did you smoke at least 100 cigarettes?” wereidentified as nonsmokers and ex-smokers, respectively.Participants who reported beingcurrent smokers at the baseline interview butdenied having smoked 100 or more cigarettesduring the follow-up period were also identifiedas ex-smokers.NESARC investigators ascertained mentaldisorders with the Alcohol Use Disorder andAssociated Disabilities Interview Schedule---Diagnostic and Statistical Manual of MentalDisorders, Fourth Edition version administeredat baseline and follow-up. Participantswho did not meet the criteria for a lifetimedisorder at baseline but met the diagnosticcriteria in the period between the baseline andfollow-up interviews were rated as new-onset orincident cases.32 We included 8 disorders inour analyses: major depressive episodes, dysthymia,manic episodes, generalized anxietydisorder, panic disorder, social anxiety disorder,specific phobias, and posttraumatic stressdisorder (PTSD). PTSD was assessed only inthe wave 2 interview. However, participantswere asked whether the time they first experiencedthe symptoms was since the baselineinterview. Only PTSD episodes that startedafter the baseline interview were categorized asnew-onset PTSD.
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