48 × 10-5-24 × 10<☆☆p>-5 = 24 × 10<☆☆p>-...
Attributable risk★★★★★★★ = ...
59.吸菸者與非吸菸者之寵物犬發生膀胱癌的風險分別為48 × 10-5及24 ×..-阿摩線上測驗