“In sum, Jellinek's highly influential articles were based on questionnaires completed by 98 male members of A.A. Of the 158 questionnaires returned, Jellinek had eliminated 60, excluding the data from some A.A. members who had pooled and averaged their answers on a single questionnaire because they shared their newsletter. Jellinek also excluded all questionnaires filled out by women because their answers differed greatly from the men's. No wonder Jellinek spoke of the limitations of the data. And no wonder his data conformed so closely to the A.A. model. Even in 1960, Jellinek acknowledged the lack of any demonstrated scientific foundation for his proposals. Of the lack of evidence he remarked, "For the time being this may suffice, but not indefinitely." 16”