The proportion of patients cured was similar in the two treatment groups in the intention-to-treat population ( @ % in the clindamycin group and @ % in the TMP-SMX group ; difference , -@ percentage points ; @ % confidence interval -LSB- CI -RSB- , -@ to @ ; P = @ ) and in the populations of patients who could be evaluated ( @ patients ; @ % in the clindamycin group and @ % in the TMP-SMX group ; difference , -@ percentage points ; @ % CI , -@ to @ ; P = @ ) .