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. 2012 Dec 28;6:1–10. doi: 10.2147/JAA.S34582

Table S1B.

Results of Cox proportional hazards model: time to asthma-related hospitalization/emergency department visit

Variable HR 95% CI P value
Fluticasone/salmeterol (1 = yes) 0.441 0.225 0.864 0.0169
Age (continuous) 1.050 0.906 1.216 0.5170
Male (1 = yes) 0.707 0.404 1.237 0.2248
Midwest region* (1 = yes) 1.321 0.633 2.755 0.4580
South region* (1 = yes) 1.752 0.647 4.743 0.2700
Charlson index in pre-index period (continuous) 1.294 0.970 1.725 0.0792
Presence of allergic rhinitis (1 = yes) 1.104 0.622 1.962 0.7346
Number of SABA canisters (continuous) 1.210 1.016 1.440 0.0324
Number of OCS prescriptions (continuous) 0.957 0.756 1.212 0.7150
Number of ICS canisters (continuous) 0.884 0.671 1.164 0.3796
Number of hospital/ED visits for respiratory-related conditions (continuous) 1.792 1.421 2.259 <0.0001

Note:

*

Reference group, East region.

Abbreviations: ED, emergency department; ICS, inhaled corticosteroid; OCS, oral corticosteroid; SABA, short-acting beta agonist; CI, confidence interval; HR, hazards ratio.