A randomized comparative trial of Nova-T and TCu200Ag in Yugoslavia.

The contraceptive efficacy and clinical performance of Nova-T and TCu200Ag were studied in a randomized comparative study with 819 interval acceptors. The 1- and 2-year gross termination rates were evaluated by means of the life-table method. The 12-month pregnancy rates were 1.0 per 100 women with Nova-T and 3.0 per 100 women with TCu200Ag. The preliminary 2-year rates were 1.7 and 5.5 per 100 respectively (p = 0.037). Rates of expulsion, medical and personal removals were not significantly different for the two devices. Continuation rates for the first year were 89.4 and 90.5 per 100 respectively.