Table 1.
Comparison of Characteristics of the Participants in the Training and Test Sets
| Parameter | Levels | Training Set | Test Set | P-value |
|---|---|---|---|---|
| N | 143 (100%) | 286 (100%) | ||
| Arm | A | 72 (50.3%) | 140 (49.0%) | 0.7848 |
| Arm | B | 71 (49.7%) | 146 (51.0%) | |
| Age | 143 73.8 ± 6.4 | 286 73.3 ± 6.3 | 0.4313 | |
| Race | Black/African American | 7 (4.9%) | 18 (6.3%) | 0.8390 |
| Race | White/Caucasian | 127 (88.8%) | 251 (87.8%) | |
| Race | Other | 9 (6.3%) | 17 (5.9%) | |
| Ethnicity | Hispanic/Latino | 7 (4.9%) | 9 (3.2%) | 0.3715 |
| Ethnicity | Not Hispanic/Latino | 136 (95.1%) | 276 (96.8%) | |
| Education | College graduate | 72 (50.3%) | 135 (47.2%) | 0.5386 |
| BMI | 142 31.1 ± 3.3 | 286 31.7 ± 3.5 | 0.0711 | |
| PHQ-9 | ≤4 | 61 (43.3%) | 140 (50.2%) | 0.2019 |
| PHQ-9 | 5 – 14 | 72 (51.1%) | 131 (47.0%) | |
| PHQ-9 | >14 | 8 (5.7%) | 8 (2.9%) | |
| History of Smoking | 102 (71.8%) | 195 (68.9%) | 0.5351 | |
| Diabetes | 66 (46.2%) | 113 (39.5%) | 0.1884 | |
| Hypertension | 114 (79.7%) | 207 (72.4%) | 0.0986 | |
| Sleep Apnea | 28 (19.7%) | 54 (18.9%) | 0.8489 | |
| 6MWD - Month 0 | 139 347 ± 67.4 | 284 345 ± 69.5 | 0.7628 | |
| 6MWD - Month 3 | 128 351 ± 74.0 | 262 357 ± 70.4 | 0.4279 | |
| 6MWD - Month 6 | 123 355 ± 77.9 | 247 354 ± 71.6 | 0.9169 | |
| 6MWD - Month 9 | 114 350 ± 80.2 | 242 352 ± 80.2 | 0.7814 | |
| 6MWD - Month 12 | 116 363 ± 77.2 | 245 358 ± 76.7 | 0.5465 | |
| PF10 - Month 0 | 143 64.7 ± 22.0 | 286 64.4 ± 20.4 | 0.8832 | |
| PF10 - Month 3 | 124 70.1 ± 21.8 | 255 69.7 ± 19.6 | 0.8593 | |
| PF10 - Month 6 | 122 69.9 ± 22.7 | 248 70.8 ± 20.6 | 0.6940 | |
| PF10 - Month 9 | 125 69.3 ± 22.7 | 248 70.0 ± 21.6 | 0.7715 | |
| PF10 - Month 12 | 127 68.2 ± 23.1 | 261 69.0 ± 21.3 | 0.7496 | |
| PGIC - Month 3 | Very/Much better | 20 (17.7%) | 45 (19.7%) | 0.6530 |
| PGIC - Month 3 | Little better | 33 (29.2%) | 66 (28.8%) | |
| PGIC - Month 3 | No change | 51 (45.1%) | 107 (46.7%) | |
| PGIC - Month 3 | Little worse | 9 (8.0%) | 10 (4.4%) | |
| PGIC - Month 3 | Very/Much worse | 1 (0.4%) | ||
| PGIC - Month 6 | Very/Much better | 15 (13.4%) | 37 (16.4%) | 0.5448 |
| PGIC - Month 6 | Little better | 34 (30.4%) | 71 (31.4%) | |
| PGIC - Month 6 | No change | 57 (50.9%) | 101 (44.7%) | |
| PGIC - Month 6 | Little worse | 6 (5.4%) | 13 (5.8%) | |
| PGIC - Month 6 | Very/Much worse | 4 (1.8%) | ||
| PGIC - Month 9 | Very/Much better | 21 (17.4%) | 44 (18.7%) | 0.0753 |
| PGIC - Month 9 | Little better | 23 (19.0%) | 67 (28.5%) | |
| PGIC - Month 9 | No change | 58 (47.9%) | 104 (44.3%) | |
| PGIC - Month 9 | Little worse | 17 (14.0%) | 15 (6.4%) | |
| PGIC - Month 9 | Very/Much worse | 2 (1.7%) | 5 (2.1%) | |
| PGIC - Month 12 | Very/Much better | 13 (11.3%) | 35 (15.0%) | 0.6073 |
| PGIC - Month 12 | Little better | 28 (24.3%) | 66 (28.3%) | |
| PGIC - Month 12 | No change | 59 (51.3%) | 106 (45.5%) | |
| PGIC - Month 12 | Little worse | 14 (12.2%) | 22 (9.4%) | |
| PGIC - Month 12 | Very/Much worse | 1 (0.9%) | 4 (1.7%) |