Table.2 Comparison of Patient Characteristics for Incident Adhesive Capsulitis Cases and Matched Rotator Cuff Tear Controls
From: The epidemiology and etiology of adhesive capsulitis in the U.S. Medicare population
|  | Adhesive Capsulitis Cases (N = 7,232) | Rotator Cuff Tear Controls (N = 21,694) | p |
|---|---|---|---|
N (%) | N (%) | ||
Male | 2,592 (35.8) | 7,776 (35.8) | 0.99 |
Race |  |  |  < 0.0001 |
 Asian | 133 (1.8) | 175 (0.8) |  |
 Black | 453 (6.3) | 1,037 (4.8) |  |
 Hispanic | 73 (1.0) | 251 (1.2) |  |
 Other | 183 (2.5) | 311 (1.4) |  |
 White | 6,390 (88.4) | 19,920 (91.8) |  |
Dual eligible for Medicaida | 513 (7.1) | 1,111 (5.1) |  < 0.0001 |
Mean Age (Standard Deviation) | 74.8 (6.8) | 74.9 (6.7) | 0.11 |
Age Group, years | Â | Â | 0.04 |
 66–69 | 2,278 (31.5) | 6,449 (29.7) |  |
 70–75 | 2,303 (31.8) | 7,218 (33.3) |  |
 76–79 | 1,011 (14.0) | 3,073 (14.2) |  |
 80–85 | 1,063 (14.7) | 3,266 (15.1) |  |
 86 +  | 577 (8.0) | 1,688 (7.8) |  |
Region |  |  |  < 0.0001 |
 Midwest | 1,641 (22.7) | 4,909 (22.6) |  |
 Northeast | 1,449 (20.0) | 4,019 (18.5) |  |
 South | 2,955 (40.9) | 8,824 (40.7) |  |
 West | 1,136 (15.7) | 3,849 (17.7) |  |
Charlson Comorbidity Index (CCI) |  |  |  < 0.0001 |
 0 | 2,369 (32.8) | 7,754 (35.7) |  |
 1 | 1,582 (21.9) | 5,005 (23.1) |  |
 2 | 1,045 (14.4) | 3,444 (15.9) |  |
 3 | 881 (12.2) | 2,350 (10.8) |  |
 4 +  | 1,355 (18.7) | 3,141 (14.5) |  |
Frailty Risk Index (FRI) |  |  |  < 0.0001 |
 0 | 4,161 (57.5) | 12,487 (57.6) |  |
 1 | 1,822 (25.2) | 5,699 (26.3) |  |
 2 | 675 (9.3) | 2,106 (9.7) |  |
 3 +  | 574 (7.9) | 1,402 (6.5) |  |
Mean Previous Year Medicare Spending (SD)b | $10,174 (20,995) | $8,130 (14,971) | Â |