Determinants of medical care utilization: the use of the telephone for reporting symptoms.
D001294:Attitude to Health; D003142:Communication; D004522:Educational Status; D005260:Female; D006801:Humans; D007182:Income; D007348:Insurance, Health / Q000706:statistics & numerical data*; D008297:Male; D009790:Occupations; D009922:Oregon; D010548:Personal Health Services; D010817:Physician-Patient Relations; D012923:Social Class; D013689:Telephone / Q000706:statistics & numerical data