Table 1—

Characteristics of patients in chart abstraction sample

PreinterventionPostinterventionP
n328336
Age (years)*66 ± 1266 ± 11.2NS
Sex*NS
 Male5552
Race*0.001
 Caucasian4533
 Hispanic2725
 African-American1412
 Asian35
 Other412
 Unknown714
Comorbidities  (Charlson  Index)NS
 12326
 23531
 32118
 41214
 557
 644
  • Data are means ± SD or %, unless otherwise indicated.

  • *

    * Obtained from administrative data.