“…The authors contended that time of teaching was important as well as the inclusion of family members, but they did not include these variables in the study. Salzer (1975) also used a one group, pre-post-test design to evaluate the effectiveness of a series of three group classes to teach diabetics self-care. The evaluation was based on the 30 of the 80 class participants who returned their questionnaires; however, those who responded reported dramatic increases in self-care behaviours after the teaching sessions.…”