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. 2017 May 15;34(2):Doc26. doi: 10.3205/zma001103

Table 3. Impact of the size of the intracluster correlation coefficient (ICC) on the minimum effect (a) and power (b) for a predefined number of 320 students in 16 seminar groups with 20 students each. ESS = effective sample size (italics = study situation).

Table 3