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Table 2 Factors associated with asthma attack and visiting an emergency room/hospital because of asthma during the past 12 months in individuals with asthma, Saudi Arabia, 2013

From: Prevalence of asthma in Saudi adults: findings from a national household survey, 2013

Factor Categories Asthma attack Visit to ER/hospital
AOR 95 % CI AOR 95 % CI
Age (decade) 0.76 0.59–0.96 NA -
Sex Male Ref - Ref -
Female 0.77 0.36–1.63 NA -
Education Primary or less Ref - Ref -
Elementary/high 0.66 0.25–1.75 0.45 0.22–0.96
College or higher 0.37 0.14–1.02 0.26 0.11–0.62
Medication for asthma Never used Ref - Ref -
Current use 9.14 3.29–25.38 2.53 1.01–6.34
Previous use 1.74 0.71–4.25 0.64 0.24–1.70
Smoking status Never smoker Ref - Ref -
Former smoker 0.52 0.17–1.61 0.39 0.15–0.97
Current smoker NA - NA -
Secondhand smoke exposure Unexposed Ref - Ref -
Exposed 2.17 1.05–4.45 1.37 0.62–2.99
Body mass index (kg/m2) 18.5–24.9, Normal Ref - Ref -
<18.5, Underweight NA - 3.95 0.83–18.92
25–29.9, Overweight 2.28 0.84–6.18 NA -
30 or more, Obese 3.01 1.34–6.78 NA -
  1. AOR adjusted odds ratio, NA dropped from the model during the backward elimination, Ref reference group