Questionnaire surveys: Sources of bias

BMJ (Online)

Volumn 347, Issue 7923, 2013, Pages

  Sedgwick, Philip ^a  

^a ST GEORGE'S UNIVERSITY OF LONDON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

PLACEBO;

ALCOHOL CONSUMPTION; CHRONIC DISEASE; CLINICAL EFFECTIVENESS; DEMOGRAPHY; DRUG USE; EPIDEMIOLOGICAL DATA; EXTERNAL VALIDITY; GENERAL PRACTITIONER; HEALTH SURVEY; HUMAN; MEDICAL CARE; MEDICAL INFORMATION; MEDICAL PRACTICE; NONRESPONSE BIAS; NOTE; PATIENT ATTITUDE; PLACEBO EFFECT; POPULATION RESEARCH; PRIORITY JOURNAL; RESPONSE BIAS; SOCIAL BEHAVIOR; STRUCTURED QUESTIONNAIRE; SYSTEMATIC ERROR; TELEPHONE INTERVIEW; TREATMENT OUTCOME; UNITED STATES; VOLUNTEER BIAS;

EID: 84883755378     PISSN: None     EISSN: 17561833     Source Type: Journal    
DOI: 10.1136/bmj.f5265     Document Type: Note

References (2)

1. Hull SC, Colloca L, Avins A, Gordon NP, Somkin CP, Kaptchuk TJ, et al. Patients' attitudes about the use of placebo treatments: telephone survey. BMJ 2013;346:f3757.
2. Sedgwick P. Bias in clinical trials. BMJ 2011;343:d4176.