Table 1.

Selected patient characteristicsa

FactorOne Serum Creatinine Determination (n = 19,982)Two or More Serum Creatinine Determinations (n = 9205)
Age (yr)52.8 ± 15.458.8 ± 17.1
Gender (% female)61%51%
DRG weight1.36 (0.86 to 3.17)2.28 (1.19 to 3.88)
LOS (d)3 (2–6)5 (3–7)
Total costs (1998 $)$5295 ($3141 to $10,748)$7690 ($3919 to $13,952)
Hospital mortality (%)2.3%3.1%
  • a DRG weight, LOS, and costs expressed as median and interquartile range. DRG, diagnosis-related group; LOS, length of stay.