Internal validity of randomized controlled trials reported in major gastrointestinal and surgical endoscopy journals in 2008

Surgical Endoscopy

Volumn 24, Issue 5, 2010, Pages 1158-1163

  Bai, Yu ^a   Wu, Yong Fa ^a   Wang, Dong ^a   Xia, Yang ^a   Gao, Jun ^a   Zou, Duo Wu ^a   Li, Zhao Shen ^a  

^a SECOND MILITARY MEDICAL UNIVERSITY   (China)

Author keywords

Gastrointestinal and surgical endoscopy journals; Internal validity; Randomized controlled trials; Reported methodology

Indexed keywords

ARTICLE; CLINICAL RESEARCH; CLINICAL TRIAL; CONTROLLED CLINICAL TRIAL; ENDOSCOPIC SURGERY; FUNDING; GASTROINTESTINAL ENDOSCOPY; HEALTH CARE POLICY; HUMAN; INTERNAL CONSISTENCY; INTERPERSONAL COMMUNICATION; METHODOLOGY; PRACTICE GUIDELINE; PRIORITY JOURNAL; QUALITY CONTROL; RANDOMIZED CONTROLLED TRIAL; RESEARCH SUBJECT; RESOURCE ALLOCATION; SAMPLING; SCIENTIFIC LITERATURE; SYSTEMATIC ERROR; TOTAL QUALITY MANAGEMENT;

EID: 77955661728     PISSN: 09302794     EISSN: 14322218     Source Type: Journal    
DOI: 10.1007/s00464-009-0743-5     Document Type: Article

References (22)

1. Sackett DL, Straus SE, Richardson WS, Rosenberg W, Haynes RB (2000) Evidence-based medicine: how to practice and teach EBM. Churchill Livingstone, Edinburgh, p 3.
2. Cook DJ, Mulrow CD, Haynes RB (1997) Systematic reviews: synthesis of best evidence for clinical decisions. Ann Intern Med 126:376-380.
3. Moher D, Jadad AR, Klassen TP (1998) Does quality of reports of randomized trials affect estimates of intervention efficacy reported in meta-analyses? Lancet 352:609-613.
4. Schulz KF, Chalmers I, Hayes RJ et al (1995) Empirical evidence of bias: dimensions of methodological quality associated with estimates of treatment effects in controlled trials. JAMA 273: 408-412.
5. Kjaergard LL, Frederiksen SL, Gluud C (2002) Validity of randomised clinical trials in gastroenterology from 1964-2000. Gastroenterology 12:1157-1160. (Pubitemid 34267296)
6. Bai Y, Gao J, Zou DW et al (2009) Methodological reporting of randomized clinical trials in major gastroenterology and hepatology journals in 2006. Hepatology 49:2108-2112.
7. Ko CY, Sack J, Chang JT et al (2002) Reporting randomised controlled trials: where quality of reporting may be improved. Dis Colon Rectum 45:443-447.
8. Solomon MJ, McLeod RS (1993) Clinical studies in surgical journals-have we improved? Dis Colon Rectum 36:43-48.
9. Lai R, Chu R, Fraumeni M et al (2006) Quality of randomized controlled trials reporting in the primary treatment of brain tumors. J Clin Oncol 24:1136-1144.
10. Liberati A, Himel HN, Chalmers TC (1986) A quality assessment of randomized control trials of primary treatment of breast cancer. J Clin Oncol 4:942-951. (Pubitemid 16080948)
11. Robinson KA, Dickersin K (2002) Development of a highly sensitive search strategy for the retrieval of reports of controlled trials using PubMed. Int J Epidemiol 31:150-153.
12. Higgins JPT, Green S (eds) (2008) Cochrane handbook for systematic reviews of interventions, version 5.0.1 (updated September 2008). The Cochrane Collaboration. www.cochranehandbook.org. Accessed 10 March 2009.
13. Tricoci P, Allen JM, Kramer JM et al (2009) Scientific evidence underlying the ACC/AHA clinical practice guidelines. JAMA 301:831-841.
14. Colditz GA, Miller JN, Mosteller F (1989) How study design affects outcomes in comparisons of therapy: I. Medical. Stat Med 8:441-454. (Pubitemid 19105892)
15. Liberati A, Himel HN, Chalmers TC (1986) A quality assessment of randomised control trials of primary treatment of breast cancer. J Clin Oncol 4:942-951.
16. Campbell DT, Stanley JC (1963) Experimental and quasiexperimental designs for research. Houghton Mifflin, Boston.
17. Hewitt C, Hahn S, Torgerson DJ et al (2005) Adequacy and reporting of allocation concealment: review of recent trials published in four general medical journals. BMJ 330:1057-1058.
18. Moher D, Dulberg CS, Wells GA (1994) Statistical power, sample size, and their reporting in randomized controlled trials. JAMA 272:122-124.
19. Jefferson T, Di Pietrantonj C, Debalini MG et al (2009) Relation of study quality, concordance, take home message, funding, and impact in studies of influenza vaccines: systematic review. BMJ 338:b354.
20. Sismondo S (2008) Pharmaceutical company funding and its consequences: a qualitative systematic review. Contemp Clin Trials 29:109-113.
21. Etter JF, Burri M, Stapleton J (2007) The impact of pharmaceutical company funding on results of randomized trials of nicotine replacement therapy for smoking cessation: a meta-analysis. Addiction 102:815-822.
22. Chollar S (1998) A registry for clinical trials. Ann Intern Med 128:701-702.