• How many people do you need for your study before you consider loss factors (i.e.,people that fail to complete the posttestor show up for a second A1c measurement)?
• Figuring 20% for loss factors, how many people will you need to perform your study? Hint: You multiply the required sample size from the G*Power calculation by .20 if using 20%. Some populations, such as military or homeless populations that are more mobile, require a larger loss factor, such as 40%you decide from your experience and back it up with evidence from the literature.