hospitalization
One year prior hospitalization        rates for asthma were also higher among formoterol than salmeterol new users with       rate ratios of 1.7 (95% CI 1.3-2.2) for patients younger than 45 and 1.5       (1.2-1.9) for older patients.
One year prior  @SUBJECT$         rates  @PREDICAT$   @OBJECT$  were also higher among formoterol than salmeterol new users with       rate ratios of 1.7 (95% CI 1.3-2.2) for patients younger than 45 and 1.5       (1.2-1.9) for older patients.