title: Failure to complete treatment for headache: a multiple regression analysis.
mesh_terms: D001676:Biofeedback, Psychology; D005260:Female; D006261:Headache / Q000628:therapy*; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D009126:Muscle Relaxation; D010352:Patient Dropouts / Q000523:psychology*; D012044:Regression Analysis