Mattress type has no impact on my sleepwalking

As part of my investigation of what factor impacts my sleepwalking, I looked at the effect of sleeping on different mattresses. Since we have 2 different mattresses I compared them to see if that would affect my sleepwalking.

As the data below show it has no impact (see graphs A, B, C, D, E and F).
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%)