In the primary crossover analysis , blocks performed with sedation resulted in a larger mean reduction in pain diary score than those done without sedation ( @ -LSB- @ -RSB- ; P = @ ) , less procedure-related pain ( difference in means @ -LSB- @ -RSB- ; P < @ ) , and a higher proportion of patients who obtained > @ % pain relief on their pain diaries ( @ % vs. @ % ; P = @ ) .