Table 2.
Patient characteristics of TKA patients with and without hidradenitis suppurativa.
| Characteristics | Not-matched group |
Matched group |
||||
|---|---|---|---|---|---|---|
| Non-HS TKA | HS TKA | P-Value | Non-HS TKA | HS TKA | P-Value | |
| Sample size | N = 273871 (99.89%) | N = 290 (0.11%) | N = 1120 | N = 280 | ||
| Age (SD): | 65.3 (8.8) | 57.3 (8.0) | < .001 | 57.3 (8.9) | 57.3 (8.8) | .92 |
| Sex | < .001 | 1 | ||||
| Female | 172846 (63.1%) | 223 (74.5) | 864 (77.1%) | 216 (77.1%) | ||
| Male | 101025 (36.9%) | 67 (22.1%) | 256 (22.9%) | 64 (22.9%) | ||
| ECI | 2.5 (2.2) | 6.7 (3.5) | < .001 | 6.3 (3.0) | 6.3 (3.0) | 1 |
TKA, total knee arthroplasty; HS, hidradenitis suppurativa; ECI, Elixhauser Comorbidity Index.
Matched based on age, sex, and ECI 4:1 non-HS patients to HS patients.
Bold indicates significance of P < .05.