MK-@ yielded improvements vs placebo of @ % in entire-season TCS ( median difference-@ @ , P < @ ) , @ % in peak-season TCS ( median difference-@ @ , P < @ ) , @ % in entire-season DSS ( median difference-@ @ , P = @ ) , @ % in entire-season DMS ( mean difference-@ @ , P < @ ) , and @ % in peak-season rhinoconjunctivitis quality-of-life questionnaire ( median difference-@ @ , P = @ ) .