Recurrence of CDI occurred in @ ( @ % ) of @ placebo patients and @ ( @ % ) of @ NTCD-M@ patients ( odds ratio -LSB- OR -RSB- , @ ; @ % CI , @-@ @ ; P = @ ) ; the lowest recurrence was in @ ( @ % ) of @ patients receiving @ ( @ ) spores/d for @ days ( OR , @ ; @ % CI , @-@ @ ; P = @ vs placebo -RSB- ) .