Women treated with 4 and 6 mg daily oxybutynin vaginal ring had significantly fewer incontinence episodes weekly ( p = 0.036 and p = 0.018 , respectively ) , lower daily urinary frequency ( p = 0.014 , p = 0.002 ) and a higher proportion had no incontinence episodes at week 12 ( p = 0.026 , p = 0.027 ) compared with placebo .