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Table 3 Association of limited vigorous activity, chronic obstructive pulmonary disease and congestive heart failure with asthma, KSA, 2013

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

Factors Categories Model 1 Model 2 Model 3 Model 4
AOR 95 % CI AOR 95 % CI AOR 95 % CI AOR 95 % CI
Age (decades) 0.90 0.79–1.03 NA - NA - 0.88 0.77–1.01
Sex Male Ref - Ref - Ref -   -
Female 0.68 0.49–0.95 0.78 0.56–1.08 0.78 0.56–1.08 0.68 0.48–0.95
Education Primary or less Ref - Ref - Ref -   -
Elementary/high 0.77 0.52–1.12 0.72 0.51–1.01 0.7 0.5–0.98 0.74 0.50–1.09
College or higher 0.65 0.42–1.01 0.6 0.4–0.91 0.6 0.4–0.9 0.66 0.42–1.02
Limited vigorous activity No Ref - NI - NI -   -
Yes 2.60 1.78–3.79 NI - NI - 2.48 1.69–3.62
Chronic obstructive pulmonary disease No NI - Ref - NI -   -
Yes NI - 11.38 4.33–29.93 NI - 9.53 2.90–31.35
Congestive heart failure No NI - NI - Ref -   -
Yes NI - NI - 5.07 1.52–16.86 2.70 0.63–11.55
Smoking status Never smoker Ref - Ref - Ref -   -
Former smoker 1.94 1.09–3.43 2.01 1.14–3.54 2.06 1.17–3.61 1.97 1.10–3.53
Current smoker 1.05 0.66–1.69 1.05 0.65–1.69 1.05 0.65–1.69 1.05 0.64–1.7
Body mass index (kg/m2) 18.5–24.9, Normal Ref -   -   -   -
<18.5, Underweight 1.98 1–3.92 2.02 1.02–3.99 2.12 1.1–4.11 2.07 1.04–4.1
25–29.9, Overweight 1.09 0.70–1.70 1.07 0.69–1.66 1.12 0.73–1.73 1.16 0.74–1.81
30 or more, Obese 2.01 1.34–3.03 2.09 1.42–3.08 2.14 1.45–3.15 2.13 1.41–3.22
  1. AOR adjusted odds ratio, NA dropped from the model during the backward elimination, NI not included in the model, Ref reference group