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Copyright ©2008 The WJG Press and Baishideng.
World J Gastroenterol. May 7, 2008; 14(17): 2650-2661
Published online May 7, 2008. doi: 10.3748/wjg.14.2650
Table 3 Quality scoring for 20 randomized, controlled trials of probiotics for IBS (Linde Internal Validity Scale)
ReferenceTotal quality score1Treatment allocationRandomization methodBaseline comparisonPatients blindedEvaluators blindedHandling and reporting of withdrawals/use of ITTData source2
Maupas[45]6111111Paper
Gade[46]4.5110110.5Paper
Halpern[47]4110.510.50Paper
Nobaek[48]310010.50.5Paper
O'Sullivan[49]31010.50.50Author
Niedzielin[50]4101101Paper
Kim[51]4.5100.5111Paper
Bausserman[52]5.5111110.5Paper
Bittner[53]31000.50.51Author
Kajander[54]4.51110.50.50Paper
Kim[55]410110.50.5Paper
Niv[56]3.5100.510.50.5Paper
O’Mahony[17]4.5110110.5Paper
Kim[57]41010.50.51Paper
Simren[58]3310.5010.50Author
Whorwell[35]3.5100.510.50.5Paper
Enck[59]3410.5010.51Author
Gawronska[60]4.511010.51Paper
Marteau[61]34.510.5110.50.5Author
Simren[62]33.510.50101Author