However, because the number of ultrasound, used in research, this time with only 10 to split the two trial groups. Which may affect the value of the reliability of the statistics.
However, due to the ultrasound used in this research has been limited to 10, making the division the two groups are not equal. Which may affect the reliability of the statistics.
However, because the number of ultrasound machine used in this study are limited only 10 machine. The experimental group two unequal. Which may affect the reliability of the program.