Cancer patient organization members (n=196) were younger and higher educated than clinical patients (n=148). Members felt more personal control over their health (p<.01) but were also more anxious (p<.05). They reported lower trust in general health care (p<.05), in their own oncologist (p<.001) and in the oncologist in the videos (p<.05). The impact of oncologist communication on trust was similar for both groups.