The second step(questionB)
consisted of 34 items including 30 items from theKJ methodand
four items from WHO-CIDI3.0.In addition,the severity of impairment of daily living due to symptoms was asked in one item
(questionC).Questions A and B ask the respondents to answer with
“yes” or “no” except the question about the duration of symptoms(3-
point scale as follows; less than 3 days,3–6 days,or more than
7 days).Question C evaluates the level of impairment resulting from
the symptoms on a 4-point scale(no,minor,moderate,orserious
problems).The respondents who answered “yes” to any item of
question A were required to answer question B.In the present study,
the respondents who answered “no” to all items of the question A
were treated as having answered “no” to all items of questionB
The second step(questionB)consisted of 34 items including 30 items from theKJ methodandfour items from WHO-CIDI3.0.In addition,the severity of impairment of daily living due to symptoms was asked in one item(questionC).Questions A and B ask the respondents to answer with“yes” or “no” except the question about the duration of symptoms(3-point scale as follows; less than 3 days,3–6 days,or more than7 days).Question C evaluates the level of impairment resulting fromthe symptoms on a 4-point scale(no,minor,moderate,orseriousproblems).The respondents who answered “yes” to any item ofquestion A were required to answer question B.In the present study,the respondents who answered “no” to all items of the question Awere treated as having answered “no” to all items of questionB
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