Exact(3)
Previous intermittent smokers (used to smoke now and then, not daily) and previous daily smokers were categorized as previous smokers.
Subjects were categorized as "previous allergic rhinitis" if they indicated that they had had AR in the self-administered questionnaire, but they had not taken antihistaminic treatment in the past 12 months.
Subjects reporting any of these symptoms in the preceding year were categorized as "previous OI" and those who experienced symptoms or signs during the OH test were categorized as "present OI".
Similar(57)
All adverse events were categorized as mild.
Self-reported smoking status was categorized into never, previous or current, and alcohol consumption was categorized as never, previous, within limits (<21 units/week for men; <14 units/week for women) and excessive.
Smoking habits were self-reported and were categorized as current, previous, or never smoking.
Study participants were categorized as either previous or new cases, based on whether anti-TB treatment was previously received.
Individuals were categorized as never, previous, and current smokers according to their status at study inclusion and did not change category during study period.
Recency of OC use was categorized as within the previous 5 years, 5 to 9 years ago, 10 to 14 years ago, 15 to 19 years ago, 20 to 24 years ago, 25 to 29 years ago, or ≥30 years ago.
One or more episodes of moderate to severe exacerbation [ 11] during the previous year were categorized as "exacerbation in the previous year".
In this analysis, VTE threshold will be the dependent variable and the independent variables will be the previous experience of VTE (categorized as severe, moderate, or mild), previous experience with prophylactic LMWH (yes, problematic; yes, no problems; no prior experience), level of education (some postsecondary versus no postsecondary) and study site.
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