However, self - rated appetite, as evaluated by visual analog scale questionnaires, was not significantly different between supplements. (alivebynature.com)
The questionnaires contained visual analog scales incorporating a 100 mm horizontal line rating scale for each response. (nutritionj.biomedcentral.com)
Assessment was made using a visual analog scale of a 10 - centimeter (cm) long straight line numbered from 0 (no fatigue) to 10 cm (excessive fatigue). (scirp.org)