Table 1:
Baseline characteristics of long-stay NH residents who underwent PNE and Stage 1 SNM test procedure from 2014 to 2016.
| Variable name | Total N=1089 (100.0) | PNE n=728 (66.9) | Stage 1 n=361 (33.2) | p |
|---|---|---|---|---|
| Age in years | ||||
| Mean ± SD | 77.9 (7.1) | 78.0 ± 7.1 | 77.8 ± 7.2 | 0.666 |
| 65–74 | 405 (37.2) | 271 (37.2) | 134 (37.1) | 0.955 |
| 75–84 | 480 (44.1) | 319 (43.2) | 161 (44.6) | |
| ≥85 | 204 (18.7) | 138 (19.0) | 66 (18.3) | |
| Sex | ||||
| Male | 282 (25.9) | 201 (27.6) | 81 (22.4) | 0.067 |
| Female | 807 (74.1) | 527 (72.4) | 280 (77.6) | |
| Race | ||||
| White | 1008 (92.6) | 672 (92.3) | 336 (93.1) | 0.857 |
| Black | 53 (4.9) | <42 (<5.8) | ≥11 (≥3.0) | |
| Other | 28 (2.6) | ≥17 (≥2.3) | <11 (<3.0) | |
| CCI | ||||
| 0 | 128 (11.8) | 93 (12.8) | 35 (9.7) | 0.295 |
| 1 – 3 | 541 (49.7) | 361 (49.6) | 180 (49.9) | |
| ≥4 | 420 (38.6) | 274 (37.6) | 146 (40.4) | |
| Mean ± SD | 3.2 ± 2.5 | 3.2 ± 2.5 | 3.4 ± 2.5 | 0.172 |
| CFI | ||||
| Not Frail to Prefrail (CFI<0.25) | 182 (16.7) | 130 (17.9) | 52 (14.4) | 0.325 |
| Mildly Frail (0.25 ≤ CFI < 0.35) | 575 (52.8) | 382 (52.5) | 193 (53.5) | |
| Moderately to Severely Frail (CFI ≥ 0.35) | 332 (30.5) | 216 (29.7) | 116 (32.1) | |
| Mean ± SD | 0.3 ± 0.1 | 0.3 ± 0.1 | 0.3 ± 0.1 | 0.171 |
| ADI National Quartile | ||||
| Q1: 1 - < 32 | 226 (20.8) | 151 (20.8) | 75 (20.8) | 0.686 |
| Q2: 32 - < 51 | 252 (23.2) | 163 (22.4) | 89 (24.7) | |
| Q3: 51 - < 68 | 291 (26.8) | 192 (26.4) | 99 (27.4) | |
| Q4: ≥ 68 | 319 (29.3) | 221 (30.4) | 98 (27.2) | |
| Procedure Year | ||||
| 2014 | 341 (31.3) | 231 (31.7) | 110 (31.5) | 0.915 |
| 2015 | 375 (34.4) | 249 (34.2) | 126 (34.9) | |
| 2016 | 373 (34.3) | 248 (34.1) | 125 (34.6) | |
| Single-stage procedure | 86 (7.9) | -- | 74 (23.8) | -- |
Note: Observations ≤10 suppressed per Centers for Medicare & Medicaid Services (CMS) cell-suppression policy19.
Abbreviations: Area Deprivation Index; CCI, Charlson Comorbidity Index; CFI, Claims-based Frailty Index; CMS, Centers for Medicare & Medicaid Services; NH, nursing home; PNE, percutaneous nerve evaluation.