This is unusual. I checked the pilot combined que and it looks fine in terms of its structure. Although, technically, I think you need to do a categorical/binomial analysis (chi-square, logistical regression? a quick java applet for such is here: http://stattrek.com/Tables/Binomial.aspx) rather than a t-test, the probability is still going to make it very surprising to get 88/222 assigned to one of two combinations. Hmm.

We have been using the same BGR randomization routines in MediaLab for almost 14 years now and I've never heard of a report like this so I don't know what to say. If it were me, I would run a simulation to see if I could replicate the problem--e.g., delete all but the essential items from the pilot questionnaire and then run the shortened (maybe 10 item revision) twenty or thirty times and see if the distribution is off balance in any predictable way. If it DOES recur then please please let me know.