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. 2008 Sep;29(5):631–634. doi: 10.1016/j.cct.2008.02.005

Table 2.

Example surgical trials summary information

Surgical trial level Clinical area No. of centres Actual (target) recruitment RI
1 Orthopaedics 27 1715 (1500) 20.4
2 General Surgery 26 1027 (1000) 30.9
3 Gastroenterology 20 357 (600) 67.6