More PRE children required hospital stay after surgery ( @ % vs @ % , P = @ ) , and PRE children had a longer number of days hospitalized after surgery ( median -LSB- interquartile ranges -RSB- : @ -LSB- @-@ @ -RSB- vs @ -LSB- @-@ -RSB- ; P < @ ) and incurred higher excess costs ( P < @ ) but not indirect costs ( P = @ ) .