ADHERENCE BEHAVIORS IN RESEARCH PROTOCOLS - COMPARISON OF 2 INTERVENTIONS

The effectiveness of an enhanced preparation intervention was compared with the standard preparation intervention for accuracy in overnight urine specimen collections. The sample consisted of 179 individuals wi th type I insulin-dependent diabetes mellitus (IDDM). Subjects were as signed randomly to an enhanced or standard preparation group. The enha nced preparation included written instructions, a reminder to post ins tructions in the bathroom, a toilet seat cover with a reminder to save urine, and a nurse-initiated telephone call to review the instruction s. The standard preparation included written instructions and a teleph one number to call with any questions. For subjects without previous c ollection experience, significantly fewer inaccurate collections were reported in the enhanced preparation group than in the standard group (x2 = 4.61, P < .05). There were no differences in collection accuracy between enhanced and standard groups for subjects with collection exp erience (x2 = .4598, P > .05).