Means and standard deviations for itch VAS scores in the learning phase for the different groups.

<p>Means (M) and standard deviations (SD) of the visual analogue scale (VAS) scores for itch in the verbal suggestion group (<i>n = 23</i>), conditioning group (<i>n = 24</i>), conditioning with verbal suggestion group (<i>n = 23</i>) and control group (<i>n = 25</i>) in the learning phase.