Table 2.
Stage 1 preoperative data and demographics (n = 17)
| Variable | Value |
|---|---|
| Age at Stage 2 (years) | 67.6 [63.5–71.7] |
| Gender | |
| Male | 10/17 (59) [36–78] |
| Female | 7/17 (41) [22–64] |
| Initial diagnosis | |
| Fracture | 9/16 (56) [33–77] |
| Rotator cuff | 5/16 (31) [14–56] |
| Arthritis | 2/16 (12) [3–36] |
| Initial procedure | |
| Hemiarthroplasty | 10/17 (59) [36–78] |
| TSA | 4/17 (24) [10–47] |
| Reverse TSA | 3/17 (18) [6–41] |
| Infection class | |
| Acute | 2/17 (12) [3–34] |
| Subacute | 8/17 (47) [26–69] |
| Chronic | 7/17 (41) [22–64] |
| WBC count (k/μL) (n = 14) | 6.93 [5.60–8.27] |
| ESR (mm/hour) (n = 13) | 28.8 [18.8–38.9] |
| CRP (mg/dL) (n = 13) | 2.22 [1.27–3.16] |
| Aspirate | |
| No fluid | 2/12 (17) [5–45] |
| Negative | 1/12 (8) [1–35] |
| + poly, − org | 3/12 (25) [9–53] |
| + org | 6/12 (50) [25–75] |
Values are expressed as mean, with 95% confidence interval in brackets, or as number/total number of patients, with percentage in parentheses and 95% confidence intervals in brackets; TSA = total shoulder arthroplasty; WBC = white blood cell; ESR = erythrocyte sedimentation rate; CRP = C-reactive protein; poly = polymorphonuclear leukocytes; org = organisms.