Table 1.
Patient characteristics by wait-list status (n = 3,110)
| Variable | Total | Never Wait-Listed [n (%)] | Wait-Listed [n (%)] |
|---|---|---|---|
| Count | 3,110 | 1,555 | 1,555 |
| Matched factors | |||
| Baseline year | |||
| 2006–2008 | 818 | 409 (26) | 409 (26) |
| 2009–2011 | 1,124 | 562 (36) | 562 (36) |
| 2012–2014 | 1,168 | 584 (38) | 584 (38) |
| Age group | |||
| 18–30 | 1,790 | 895 (58) | 895 (58) |
| 30–39 | 762 | 381 (24) | 381 (24) |
| ≥40 | 558 | 279 (18) | 279 (18) |
| FEV1, % predicted | |||
| <20 | 364 | 182 (12) | 182 (12) |
| 20 to <30 | 1,438 | 719 (46) | 719 (46) |
| 30 to <40 | 966 | 483 (31) | 483 (31) |
| ≥40 | 342 | 171 (11) | 171 (11) |
| Clinical factors | |||
| Sex | |||
| F | 1,413 | 634 (41) | 779 (50) |
| M | 1,697 | 921 (59) | 776 (50) |
| BMI category | |||
| Underweight | 937 | 477 (31) | 460 (30) |
| Normal weight | 1,908 | 907 (58) | 1,001 (64) |
| Overweight | 260 | 168 (11) | 92 (6) |
| Missing | 5 | — | — |
| FVC, % predicted | |||
| <30 | 141 | 73 (5) | 73 (5) |
| 30 to <40 | 524 | 225 (14) | 299 (19) |
| 40 to <50 | 867 | 362 (23) | 505 (32) |
| 50 to <60 | 807 | 410 (26) | 397 (26) |
| ≥60 | 769 | 489 (31) | 280 (18) |
| Missing | 2 | — | — |
| Time on i.v. antibiotic treatment | |||
| 0 to <2 wk | 540 | 438 (28) | 102 (7) |
| <2 wk | 335 | 226 (15) | 109 (7) |
| 2 wk to <1 mo | 415 | 273 (18) | 142 (9) |
| 1 mo to <2 mo | 689 | 296 (19) | 393 (25) |
| 2 mo to <3 mo | 482 | 166 (11) | 316 (20) |
| ≥3 mo | 649 | 156 (10) | 493 (32) |
| Respiratory microbiology | |||
| Methicillin-resistant Staphylococcus aureus | 2,000 | 1,016 (65) | 984 (63) |
| No | 1,003 | 456 (29) | 547 (35) |
| Yes | 107 | 83 (5) | 24 (2) |
| Missing | 1,991 | 1,103 (71) | 888 (57) |
| Multidrug-resistant Pseudomonas aeruginosa | 1,012 | 369 (24) | 643 (41) |
| No | 107 | 83 (5) | 24 (2) |
| Yes | 1,252 | 604 (39) | 648 (42) |
| Missing | 157 | 79 (5) | 78 (5) |
| Nontuberculous mycobacteria* | 1,701 | 872 (56) | 829 (53) |
| No | — | — | — |
| Yes | — | — | — |
| Missing | — | — | — |
| Supplemental oxygen use | |||
| No | 1,017 | 710 (46) | 307 (20) |
| Yes | 1,725 | 603 (39) | 1,122 (72) |
| Missing | 368 | 242 (16) | 126 (8) |
| Hemoptysis | |||
| No | 2,970 | 1,516 (97) | 1,454 (94) |
| Yes | 140 | 39 (3) | 101 (6) |
| Socioeconomic factors | |||
| Race/Ethnicity | |||
| White, non-Hispanic | 2,862 | 1,400 (90) | 1,462 (94) |
| Hispanic, any race | 142 | 82 (5) | 60 (4) |
| Other/missing | 106 | 73 (5) | 33 (2) |
| Marital status | |||
| Married/Living together | 1,211 | 534 (34) | 677 (43) |
| Separated/Divorced/Widowed | 164 | 80 (5) | 84 (5) |
| Single | 1,713 | 924 (59) | 789 (51) |
| Missing | 22 | 17 (1) | 5 (0) |
| Education | |||
| <High school | 213 | 163 (10) | 50 (3) |
| High school diploma | 1,004 | 576 (37) | 428 (28) |
| Some college | 871 | 375 (24) | 496 (32) |
| College graduate | 822 | 326 (21) | 496 (32) |
| Missing | 200 | 115 (7) | 85 (5) |
| Employment* | |||
| Full time | 536 | 343 (22) | 193 (12) |
| Part time | 393 | 204 (13) | 189 (12) |
| Student | 313 | 155 (10) | 158 (10) |
| Unemployed, disabled | 1,794 | 805 (52) | 989 (64) |
| Missing | 74 | 48 (3) | 26 (2) |
| Insurance | |||
| Medicaid | 1,405 | 759 (49) | 646 (41) |
| Medicare | 363 | 174 (11) | 189 (12) |
| Private | 1,115 | 504 (32) | 611 (39) |
| Other/None | 227 | 118 (8) | 109 (7) |
| Household income, median by zip code | |||
| <$35,000 | 298 | 158 (10) | 140 (9) |
| $35,000 to <$50,000 | 992 | 538 (35) | 454 (29) |
| $50,000 to <$65,000 | 764 | 379 (24) | 385 (25) |
| $65,000 to <$80,000 | 447 | 192 (12) | 255 (16) |
| ≥$80,000 | 433 | 183 (12) | 250 (16) |
| Missing | 176 | 105 (7) | 71 (5) |
| Distance to transplant center, miles | |||
| <50 | 1,336 | 627 (40) | 709 (46) |
| 50 to <250 | 1,339 | 705 (45) | 634 (41) |
| ≥250 | 202 | 101 (6) | 101 (6) |
| Missing | 233 | 122 (8) | 111 (7) |
Definition of abbreviations: BMI = body mass index; FEV1 = forced expiratory volume in 1 second; FVC = forced vital capacity; i.v. = intravenous.
Matching criteria included year of wait-listing (or matched year), age group, and FEV1 % predicted.
*
Denotes variables not included in scores.