There were experiments in the mid-19th century with a wind-up vibrator, but it proved to be underpowered, with an unfortunate tendency to run down before finishing the job.
Consequent to the early interruption, our study results to be underpowered.
And if you're looking to play HD video, you'll find it to be underpowered as well.
There were also mechanical problems with the design, which caused it to be unreliable; the engine was also found to be underpowered, possibly due to problems with the torque characteristics of the engine or an inefficient transmission system.
Due to the relatively low incidence rate of clinical malaria in this study population, estimates of the intervention effect are less precise than would be ideal for this type of analysis, and the time-stratified analyses are likely to be underpowered to detect effects in specific time strata.
However, the test is believed to be underpowered.
Many of the studies were small and were likely to be underpowered to detect a difference.
The sample size was small and the study likely to be underpowered.
In fact, the study appears to be underpowered despite the high response rate.
Our study appears to be underpowered for the detection of a preoperative difference in hepcidin levels.
Thus, the final sample size was 25, which caused the study to be underpowered to detect categorical differences between groups.
