Multi-vitamin pills do not affect my sleepwalking

As part of my investigation of what factor impacts my sleepwalking, I looked at the effect of multi-vitamin pills. This is a little bit of a black box testing, to see if one of the many vitamin in those cocktails could be beneficial (or detrimental) to my sleepwalking.

Taking multi-vitamin pills does not affect my sleepwalking as the graphs below show.
Data exclude nights with clonazepam and are normalized for the effect of coffee and tiredness.

Average values, +/- SEM. % variation and statistical significance are indicated (if less than 1%)