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Table 5 Number of patients per arm, based on effect size and failure rate

From: Prevention of catheter lumen occlusion with rT-PA versus heparin (Pre-CLOT): study protocol of a randomized trial [ISRCTN35253449]

Effect Size

Failure Rate 95%

Failure Rate 98%

30%

235

195

33.3%

185

160

35%

160

140

40%

120

95

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BMC Nephrology

ISSN: 1471-2369

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