And likewise, a study by McKinsey & Company of American businesses said 30 percent of them are anticipating dropping people from coverage.
"A study by McKinsey and Co. of American businesses said 30percentt of them are anticipating dropping people from coverage," Romney said.
Finally, Bank of America downgraded General Motors Wednesday to "sell," citing an anticipated drop in market share and concerns over pricing.
In order to adjust for loss of power due to an anticipated drop out of 10%, 58 patients will be included.
In order to adjust for loss of power due to an anticipated drop out of 15%, 150 participants will be included.
Thus, this study is adequately powered even if a higher than anticipated drop out rate occurs, or if missing data reduces the N for some of the analyses.
The study actually recruited 312 individuals with a lower than anticipated drop-out rate of 7% resulting in 290 participants at the end of the one-year study intervention period.
This calculation procedure resulted in 67 patients required per study group, and by adding a 10% anticipated drop out, led to a total of 150 patients for the study.
Based on an assumed 10% reduction in caries increment in the treated group as compared to the non-treatment group, a statistical power of 80%, a p-value of 0.05 and an anticipated drop out of 35%, with 1016 included children a necessary sample size of at least 200 children per group was possible (Table 1).
Considering a dropout rate of 20-30%, a standard deviation of 1.54 points, power of 80% and a significance level of 5%, an average sample size of 23 (17 29) in each group will be sufficient to detect a clinical relevant difference on the EAS subscales This number has been increased to 35 per group, to allow for the anticipated drop out during the first year.
