Table 1.
| Trapeziectomy with soft tissue arthroplasty | Simple complete trapeziectomy | CMC arthrodesis and Prosthetic CMC arthroplasty | |
|---|---|---|---|
| No. of patients (%) | 6240 (92.1) | 291 (4.3) | 245 (3.6) |
| Demographics | |||
| Mean age (SD) | 63 (9.3) | 61 (9.9) | 61 (10.1) |
| Sex††, % | |||
| Male | 20.7 | 25.4 | 27.3 |
| Female | 79.3 | 74.6 | 72.6 |
| Race††, n (%) | |||
| White | 5758 (92.3) | (92.0) | (88.2) |
| Non-white | 388 (6.2) | (8.0) | (11.8) |
| Missing | 94 (1.5) | - | - |
| Income quartile†† (per ZIP), n (%) | |||
| 1st quartile | 1148 (18.4) | (14.2) | (23.2) |
| 2nd quartile | 1598 (25.6) | (19.8) | (27.8) |
| 3rd quartile | 1655 (26.5) | (35.3) | (21.9) |
| 4th quartile | 1703 (27.3) | (30.7) | (27.1) |
| Missing | 136 (2.2) | - | - |
| Patient location††, % | |||
| Large metro. | 38.6 | 63.8 | 47.8 |
| Small metro. | 50.9 | 26.2 | 41.2 |
| Micropolitan | 6.6 | 7.2 | 7.8 |
| Non Metro | 3.9 | 2.8 | 3.2 |
| Clinical | |||
| Total co-morbidity count | |||
| Mean (SD) | 1.8 (1.3) | 1.3 (0.76) | 2.0 (1.5) |
| Chronic CV disease, n (%) | 1111 (17.8) | 13 (4.5) | 45 (118.4) |
| Diabetes Mellitus, n (%) | 247 (4.0) | - | - |
| No. of procedures during encounter | |||
| Mean (SD) | 3.4 (2.2) | 2.8 (1.6) | 3.1 (2.6) |
| Healthcare system | |||
| Payer, n (%) | |||
| Medicare | 2655 (42.6) | 104 (35.7) | 88 (35.9) |
| Private | 3113 (49.9) | 157 (54.0) | 132 (53.9) |
| Other | 469 (7.5) | 30 (10.3) | 25 (10.2) |
| Health insurance plan type, n (%) | |||
| Managed | 2296 (36.8) | 74 (25.4) | 110 (44.9) |
| Non-managed | 3504 (56.2) | 188 (64.6) | 112 (45.7) |
| Other | 437 (7.0) | 29 (10.0) | 23 (9.4) |
CMC arthrodesis, and prosthetic arthroplasty (right column) were combined into one outcome category in order to have sufficient outcomes for reliable estimates from statistical analysis.
In order to protect identity of patients who contribute personal health information to its databases, the Agency for Healthcare Research and Quality (AHRQ prohibits reporting summary statistics on patient characteristics in variable categories containing ≤10 observations. We have taken the following steps to comply with AHRQ rules:
Sex: one of the outcome categories contains 2 observations with missing data for this variable; hence we described this patient characteristic as percentages of non-missing data.
Race: two of the outcome categories contained 4 observations with missing data for this variable; hence we described this patient characteristic for those two outcome categories as percentages of non-missing data.
Income quartile (per ZIP): two of the outcome categories contained 16 observations (≤10 observations each) with missing data for this variable; hence we described this patient characteristic for those two outcome categories as percentages of non-missing data.
Patient location: two of the outcome categories contained 6 observations with missing data for this variable; hence we described this patient characteristic as percentages of non-missing data.
Diabetes Mellitus: two of the outcome categories contained ≤10 observations and no missing data; hence we are prohibited by AHRQ rules from reporting summary statistics for those 2 outcome categories.
CMC; carpometacarpal, SD; standard deviation, CV; cardiovascular.