The purpose of this study is to determine whether olopatadine nasal spray is safe and effective when used for up to one year by patients with perennial allergic rhinitis.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
890
2 sprays each nostril twice daily
2 sprays each nostril twice daily
Waco
Waco, Texas, United States
Mean Response at Day 30 to the Patient-rated Relief Assessment Questionnaire
Mean Patient-Rated Relief Assessment at Day 30. The patient-rated relief assessment (PRRA) was a 4-point scale with 1=Complete Relief; 2=Moderate Relief; 3=Mild Relief; and 4=No Relief.
Time frame: day 30
Average Number of Days of Rescue Medication Taken
Time frame: Month 1 through Month 12
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