A drug is effective if better than a harmless control.
Jackson
Brooks
B
Fleming
Thomas
T
D018849:Controlled Clinical Trials as Topic / Q000379:methods* / Q000592:standards; D005260:Female; D015658:HIV Infections / Q000188:drug therapy / Q000517:prevention & control* / Q000635:transmission*; D006801:Humans; D007231:Infant, Newborn; D018445:Infectious Disease Transmission, Vertical / Q000517:prevention & control*; D007743:Labor, Obstetric; D019829:Nevirapine / Q000008:administration & dosage / Q000627:therapeutic use*; D010919:Placebos; D011247:Pregnancy; D015215:Zidovudine / Q000008:administration & dosage / Q000627:therapeutic use*
D010919:Placebos; D015215:Zidovudine; D019829:Nevirapine