why do we need the size of the sample in a longitudinal study for wards? how to calculate sample size for a longitudinal longitudinal study how do you calculate sample size for a longitudinal study how to calculate sample size for longitudinal study vs multilevel why should unit size be calculated how does a patient sample work how is the ward sample measured what is the sample size in a longitudinal study how to determine patient satisfaction scores how to calculate the sample size for a longitudinal study how to calculate the required number of units in each hospital for an experiment what measures outcome in longitudinal experiment how to find the units of each intervention in a clinical trial how to calculate sample size for a longitudinal trial which is more accurate a pilot study or a multilevel longitudinal study, where there is a small number of units? how to find sample size of each patient in a longitudinal experiment what is meant by the term sample size in longitudinal research? how is the outcome variable derived from a survey of a unit what is the purpose of the unit-level trial? how do you calculate sample size