Table 1.
Demographic and Clinical Characteristics of the Initial Nonmatched Study Sample
| Variable | Collagenase (N = 627) | Fasciectomy (N = 1080) | P * |
|---|---|---|---|
| Age, years, mean ± SD | 74.3 ± 6.1 | 73.8 ± 5.8 | 0.080 |
| Men, n (%) | 480 (76.6) | 733 (67.9) | <0.001 |
| Geographic region, n (%) | |||
| Northeast | 217 (34.6) | 195 (18.1) | <0.001 |
| North Central | 162 (25.8) | 447 (41.4) | <0.001 |
| South | 170 (27.1) | 324 (30.0) | 0.205 |
| West | 77 (12.3) | 110 (10.2) | 0.181 |
| Unknown region | 1 (0.2) | 4 (0.4) | 0.658 |
| Health plan type, n (%) | |||
| Preferred provider Organization | 332 (53.0) | 496 (45.9) | 0.005 |
| Comprehensive | 215 (34.3) | 421 (39.0) | 0.053 |
| Other† | 80 (12.8) | 163 (15.1) | 0.183 |
| CCI, mean ± SD | 1.8 ± 2.2 | 1.9 ± 2.2 | 0.477 |
| Mental health disorders, n (%) | |||
| Anxiety | 45 (7.2) | 108 (10.0) | 0.049 |
| Psychosis | 3 (0.5) | 13 (1.2) | 0.192 |
| Bipolar disorder | 0 (0.0) | 3 (0.3) | 0.302 |
| Depression | 54 (8.6) | 108 (10.0) | 0.346 |
| Sleep disorders | 51 (8.1) | 111 (10.3) | 0.145 |
| Posttraumatic stress disorder | 5 (0.8) | 6 (0.6) | 0.545 |
| DC-related comorbidities, n (%) | |||
| Hypertension | 427 (68.1) | 770 (71.3) | 0.165 |
| Hyperlipidemia | 366 (58.4) | 643 (59.5) | 0.637 |
| Alcohol use | 12 (1.9) | 27 (2.5) | 0.435 |
| Tobacco use disorder | 59 (9.4) | 119 (11.0) | 0.294 |
| Complex regional pain syndrome | 1 (0.2) | 1 (0.1) | 1.000 |
| Carpal tunnel syndrome | 30 (4.8) | 130 (12.0) | <0.001 |
| Trigger finger syndrome | 48 (7.7) | 231 (21.4) | <0.001 |
| Epilepsy | 9 (1.4) | 10 (0.9) | 0.333 |
| Gout | 33 (5.3) | 66 (6.1) | 0.470 |
*Chi-square test or independent t test was performed.
†Includes health maintenance organization, noncapitated point-of-service, consumer-driven health plan, exclusive provider organization, point-of-service with capitation, high deductible health plan, and unknown.
SD, standard deviation.