Frequencies, descriptive statistics and standardized differences of each covariate before and after propensity score matching for patients who received hospice palliative care from the Symptom Management Program and a matched control group
| Covariate | Before matching; no. (%) of patients* | After matching; no. (%) of patients* | ||||
|---|---|---|---|---|---|---|
| SMP n = 914 | Non-SMP n = 1613 | d | SMP n = 754 | Non-SMP n = 754 | d | |
| Age group, yr | 0.58 | 0.08 | ||||
| < 55 | 101 (11.0) | 68 (4.2) | 69 (9.2) | 58 (7.7) | ||
| 55–64 | 204 (22.3) | 180 (11.2) | 145 (19.2) | 131 (17.4) | ||
| 65–74 | 283 (31.0) | 356 (22.1) | 234 (31.0) | 234 (31.0) | ||
| ≥ 75 | 326 (35.7) | 1009 (62.6) | 306 (40.6) | 331 (43.9) | ||
| Sex | 0.05 | 0.00 | ||||
| Male | 504 (55.1) | 926 (57.4) | 431 (57.2) | 431 (57.2) | ||
| Female | 410 (44.9) | 687 (42.6) | 323 (42.8) | 323 (42.8) | ||
| Charlson Comorbidity Index score, mean ± SD | 5.23 ± 2.82 | 3.81 ± 2.88 | 0.51 | 4.91 ± 2.83 | 4.92 ± 2.90 | 0.01 |
| Duration of disease, yr, mean ± SD | 3.45 ± 4.39 | 6.79 ± 6.35 | 0.55 | 3.79 ± 4.64 | 3.48 ± 4.23 | 0.07 |
| Cancer type | 0.44 | 0.07 | ||||
| Breast | 59 (6.5) | 142 (8.8) | 48 (6.4) | 49 (6.5) | ||
| Lung | 264 (28.9) | 225 (13.9) | 190 (25.2) | 170 (22.5) | ||
| Colorectal | 96 (10.5) | 232 (14.4) | 88 (11.7) | 87 (11.5) | ||
| Prostate | 67 (7.3) | 253 (15.7) | 65 (8.6) | 64 (8.5) | ||
| Other | 428 (46.8) | 761 (47.2) | 363 (48.1) | 384 (50.9) | ||
| Rural residence | 0.18 | 0.01 | ||||
| No | 842 (92.1) | 1397 (86.6) | 688 (91.2) | 687 (91.1) | ||
| Yes | 72 (7.9) | 216 (13.4) | 66 (8.8) | 67 (8.9) | ||
| Income quintile | 0.14 | 0.06 | ||||
| 1 (lowest) | 208 (22.8) | 443 (27.5) | 185 (24.5) | 165 (21.9) | ||
| 2 | 188 (20.6) | 324 (20.1) | 159 (21.1) | 163 (21.6) | ||
| 3 | 185 (20.2) | 269 (16.7) | 143 (19.0) | 149 (19.8) | ||
| 4 | 175 (19.1) | 327 (20.3) | 140 (18.6) | 147 (19.5) | ||
| 5 (highest) | 158 (17.3) | 250 (15.5) | 127 (16.8) | 130 (17.2) | ||
| Index year | 0.15 | 0.02 | ||||
| 2012 | 190 (20.8) | 407 (25.2) | 165 (21.9) | 166 (22.0) | ||
| 2013 | 232 (25.4) | 436 (27.0) | 203 (26.9) | 210 (27.8) | ||
| 2014 | 228 (24.9) | 397 (24.6) | 188 (24.9) | 183 (24.3) | ||
| 2015 | 264 (28.9) | 373 (23.1) | 198 (26.3) | 195 (25.9) | ||
Note: d = standardized difference, SD = standard deviation, SMP = Symptom Management Program.
↵* Except where noted otherwise.