placebo
FINDINGS:       Diclofenac-potassium was more effective than placebo in reducing migraine       headache pain at 2 h after dosing, which was the primary endpoint.
FINDINGS:       Diclofenac-potassium was more effective than  @SUBJECT$   @PREDICAT$  reducing migraine       headache  @OBJECT$  at 2 h after dosing, which was the primary endpoint.