Research Article

Wide Variation of Squeezing Force and Dispensing Time Interval among Eyedropper Bottles

Table 3

Comparison of squeezing force and shape of eyedropper bottles.

ShapeMean (N)SDLower 95% CIUpper 95% CI

First dropRound9.23.28.310
Dimple6.71.35.97.5
Square6.52.357.9

Second dropRound10.93.41011.9
Dimple9.81.68.910.7
Square8.72.7710.5

CI: confidential interval; ; ; Tukey–Kramer HSD test.