TABLE I.
Demographic Characteristics of Hip Fracture and Non-Hip Fracture Cohorts*
| Characteristic | Before Propensity Score Matching | After Propensity Score Matching | ||||
| Hip Fracture Cohort (N = 5,905) | Non-Hip Fracture Cohort (N = 1,170,734) | P Value | Hip Fracture Cohort (N = 5,905) | Non-Hip Fracture Cohort (N = 5,905) | P Value | |
| Age† (yr) | 82.7 ± 8.0 | 75.6 ± 7.6 | <0.0001 | 82.7 ± 8.0 | 82.3 ± 8.2 | 0.0137 |
| CCI score† (points) | 1.96 ± 2.1 | 1.39 ± 1.9 | <0.0001 | 1.96 ± 2.1 | 2.0 ± 2.3 | 0.0973 |
| Pre-fracture costs† (USD) | $8,391 ± $15,863 | $4,604 ± $11,698 | <0.0001 | $8,391 ± $15,863 | $8,896 ± $18,073 | 0.1064 |
| Age group (no. of patients) | <0.0001 | 0.0235 | ||||
| 65-74 yr | 1,084 (18%) | 609,436 (52%) | 1,084 (18%) | 975 (17%) | ||
| 75-84 yr | 2,142 (36%) | 386,804 (33%) | 2,142 (36%) | 2,155 (36%) | ||
| ≥85 yr | 2,679 (45%) | 174,494 (15%) | 2,679 (45%) | 2,775 (47%) | ||
| Sex (no. of patients) | <0.0001 | 0.5674 | ||||
| Male | 1,505 (25%) | 508,524 (43%) | 1,505 (25%) | 1,478 (25%) | ||
| Female | 4,400 (75%) | 662,210 (57%) | 4,400 (75%) | 4,427 (75%) | ||
| Race (no. of patients) | <0.0001 | 0.99 | ||||
| White | 5,497 (93%) | 1,011,881 (86%) | 5,497 (93%) | 5,491 (93%) | ||
| Black | 193 (3%) | 87,075 (7%) | 193 (3%) | 195 (3%) | ||
| Hispanic | 86 (1%) | 17,031 (1%) | 86 (1%) | 85 (1%) | ||
| Other | 129 (2%) | 54,747 (5%) | 129 (2%) | 134 (2%) | ||
| Geographic region (no. of patients) | <0.0001 | 0.9992 | ||||
| Northeast | 1,086 (18%) | 217,560 (19%) | 1,086 (18%) | 1,095 (18%) | ||
| Midwest | 1,355 (23%) | 264,775 (23%) | 1,355 (23%) | 1,346 (23%) | ||
| South | 2,495 (42%) | 466,143 (40%) | 2,495 (42%) | 2,489 (42%) | ||
| West | 952 (16%) | 216,895 (19%) | 952 (16%) | 957 (16%) | ||
| Unknown | 17 (0%) | 5,361 (0%) | 17 (0%) | 18 (0%) | ||
*
Some percentages may not add up to 100% because of rounding.
†
The values are given as the mean and the standard deviation.