Characteristic No health care proxy, N = 1481 Health care proxy, N = 9381 Difference2
Age 75 (63, 84) 75 (65, 84) -0.01
Gender 0.01
Male 83 (56%) 521 (55%)
Female 66 (44%) 418 (45%)
Ethnicity 0.02
White 105 (71%) 665 (71%)
Black/African American 15 (10%) 91 (9.7%)
Other 11 (7.4%) 73 (7.8%)
Unknown 18 (12%) 109 (12%)
SAPS II Mortality Probability 0.64 (0.55, 0.78) 0.66 (0.58, 0.78) -0.01

1 Median (IQR); n (%)

2 Standardized Mean Difference