In group A compared with group B , there were @ % fewer gram-positive bloodstream infections ( @ % -LSB- @ of @ -RSB- vs @ % -LSB- @ of @ -RSB- ; difference , -@ % ; @ % CI , -@ % to -@ % ; P = @ ) and @ % fewer central line-associated bloodstream infections ( @ vs @ per @ central line days ; ratio , @ ; @ % CI , @ to @ ; P = @ ) .