title: [Double blind comparative study of analgesic drugs for headache sequential analysis and the Wilcoxon method].
mesh_terms: D000293:Adolescent; D000328:Adult; D000700:Analgesics / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004878:Ergotamine / Q000627:therapeutic use; D005260:Female; D006261:Headache / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D010640:Phenothiazines / Q000009:adverse effects / Q000627:therapeutic use*; D010919:Placebos
chemical_list: D000700:Analgesics; D010640:Phenothiazines; D010919:Placebos; D004878:Ergotamine