Course TopicsPower analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required ...

Course TopicsPower analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required ...

To determine the sample size in advance without knowing how far out of specification the OOS result will be, one would need to decide on a difference to detect in advance.

Conventionally, sample size calculations are viewed as calculations determining the right number of subjects needed for a study. Such calculations follow the classical paradigm: "for a difference X, I ...

Montserrat Roset, Xavier Badia, Nancy E. Mayo, Sample Size Calculations in Studies Using the EuroQol 5D, Quality of Life Research, Vol. 8, No. 6 (Sep., 1999), pp. 539-549 ...