Table 8

Power for univariate and multivariate tests

Sample size required for 80% power


Mx

NQuery


Test that x → y1 = 0 (univariate) (df = 1)

28

26

Multivariate test (df = 3)

14

Note 1


Notes: 1 Power for a multivariate test cannot be calculated using standard software.

Miles BMC Medical Research Methodology 2003 3:27   doi:10.1186/1471-2288-3-27

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