Table 2 Odds ratio (95% confidence interval) for death associated with long acting β-agonist (LABA) treatment in the 3 months and 4–12 months before the index date*: UK case–control study22
UnadjustedAdjusted†
Past 3 months0.94 (0.70 to 1.27)0.97 (0.70 to 1.36)
Past 4–12 months1.01 (0.77 to 1.32)0.94 (0.69 to 1.27)
  • *Due to the possibility that treatment in the 3 months before the index event may be prescribed in response to the deteriorating state of the patient, the 4–12 month treatment is also presented.

  • †Adjusted for sex, age at asthma onset, chronic obstructive pulmonary disease, hospital admission for asthma, other drug categories.