Table 2

Characteristics of HFH according to centre volume groups

Group 1 (low volume) (n=98 794)Group 2 (medium volume) (n=100 813)Group 3 (high volume) (n=101 365)p Value for difference between groups
Age groups (years)
 18–29287 (0.29%)365 (0.36%)595 (0.59%)<0.001
 30–494999 (5.06%)5850 (5.80%)6654 (6.56%)
 50–6925 405 (25.72%)28 337 (28.11%)30 018 (29.61%)
 70 or older68 103 (68.93%)66 261 (65.73%)64 098 (63.23%)
Gender
Females51 210 (51.84%)51 063 (50.65%)48 341 (47.69%)<0.001
Males47 584 (48.16%)49 750 (49.35%)53 024 (52.31%)
Race
 Whites69 179 (70.02%)60 590 (60.10%)59 937 (59.13%)<0.001
 Blacks16 465 (16.67%)25 223 (25.02%)22 679 (22.37%)
 Others13 150 (13.31%)15 000 (14.88%)18 749 (18.50%)
Ethnicity
 Hispanic9462 (9.58%)10 265 (10.18%)10 906 (10.76%)<0.001
APR-severity of illness
 Minor7714 (7.81%)8471 (8.40%)7949 (7.84%)<0.001
 Moderate42 146 (42.66%)38 546 (38.24%)34 330 (33.87%)
 Major40 760 (41.26%)43 897 (43.54%)47 305 (46.67%)
 Extreme8172 (8.27%)9899 (9.82%)11 781 (11.62%)
APR risk of mortality
 Minor11 467 (11.61%)12 485 (12.38%)10 724 (10.58%)<0.001
 Moderate43 815 (44.35%)42 277 (41.94%)42 667 (42.09%)
 Major32 855 (33.26%)33 655 (33.38%)34 919 (34.45%)
 Extreme10 655 (10.79%)12 396 (12.30%)13 055 (12.88%)
Primary source of payment
 Other Insurance17 997 (18.22%)21 991 (21.81%)26 859 (26.50%)<0.001
 Medicare/Medicaid/federal programme76 836 (77.77%)73 625 (73.03%)73 099 (72.11%)
 Self-pay3912 (3.96%)5077 (5.04%)1309 (1.29%)
 Undetermined49 (0.05%)120 (0.12%)98 (0.10%)
Admission via emergency department84 878 (85.91%)87 619 (86.91%)77 225 (76.19%)<0.001
  • HFH, heart failure hospitalisation.