TABLE 1.
Cohort Demographics
| Variable | Main Analysis: Primary Bronchiolitis Diagnoses | Sensitivity: All Bronchiolitis Diagnoses | Sensitivity: APR-DRG v32 Bronchiolitisa |
|---|---|---|---|
| No. unique admissions, n (%) | 203 859 (100) | 292 390 (100) | 195 233 (100) |
| No. unique patients | 185 658 | 257 167 | 179 339 |
| Age | |||
| Median age (IQR), mo | 5 (2–11) | 5 (2–12) | 5 (2–11) |
| Sex, n (%) | |||
| Male | 119 393 (58.57) | 171 050 (58.5) | 114 183 (58.49) |
| Race, n (%) | |||
| White | 112 658 (55.26) | 160 872 (55.02) | 108 104 (55.37) |
| Black | 40 819 (20.02) | 60 172 (20.58) | 38 400 (19.67) |
| Asian American | 6170 (3.03) | 9083 (3.11) | 5973 (3.06) |
| American Indian | 1554 (0.76) | 2407 (0.82) | 1496 (0.77) |
| Pacific islander | 1690 (0.83) | 2417 (0.83) | 1615 (0.83) |
| Other race | 34 251 (16.8) | 47 047 (16.09) | 33 068 (16.94) |
| Ethnicity, n (%) | |||
| Hispanic | 49 064 (24.07) | 71 509 (24.46) | 47 495 (24.33) |
| Insurance, n (%) | |||
| Commercial insurance | 64 361 (31.57) | 91 037 (31.14) | 62 523 (32.02) |
| Government insurance | 132 268 (64.88) | 190 514 (65.16) | 125 700 (64.38) |
| Other insurance | 7230 (3.55) | 10 839 (3.71) | 7010 (3.59) |
| Complex chronic conditions, n (%) | |||
| Complex chronic condition | 36 186 (17.75) | 61 846 (21.15) | 28 601 (14.65) |
| Cardiovascular condition | 12 038 (5.91) | 21 818 (7.46) | 9801 (5.02) |
| Gastrointestinal condition | 7905 (3.88) | 15 093 (5.16) | 6177 (3.16) |
| Hematologic or immunologic condition | 2621 (1.29) | 4721 (1.61) | 2459 (1.26) |
| Malignancy | 745 (0.37) | 1688 (0.58) | 657 (0.34) |
| Metabolic condition | 1844 (0.9) | 4000 (1.37) | 1476 (0.76) |
| Neurologic condition | 4174 (2.05) | 8300 (2.84) | 3379 (1.73) |
| Genetic condition | 7884 (3.87) | 13 368 (4.57) | 7203 (3.69) |
| Premature or neonatal condition | 7676 (3.77) | 13 808 (4.72) | 2151 (1.1) |
| Renal condition | 1824 (0.89) | 3479 (1.19) | 1560 (0.8) |
| Respiratory condition | 6201 (3.04) | 11 644 (3.98) | 4870 (2.49) |
| Technology dependent | 10 263 (5.03) | 18 591 (6.36) | 7898 (4.05) |
| Transplant recipient | 131 (0.06) | 330 (0.11) | 134 (0.07) |
| Admission characteristics | |||
| Median hospital length of stay in days (IQR) | 3 (2–4) | 3 (2–5) | 2 (2–4) |
| Admitted to ICU, n (%) | 39 422 (19.34) | 80 156 (27.41) | 33 981 (17.41) |
| Highest support of invasive ventilation, n (%) | 6751 (3.31) | 19 792 (6.77) | 2251 (1.15) |
| Highest support of NIV, n (%) | 9983 (4.9) | 19 427 (6.64) | 9470 (4.85) |
| No ventilatory support, n (%) | 187 125 (91.79) | 253 171 (86.59) | 183 512 (94) |
| Received ECMO, n (%) | 113 (0.06) | 537 (0.18) | 1 (0) |
| Cost of care | |||
| Median cost (IQR) | 5224 (3120–9365) | 6119 (3506–11 883) | 5034 (3053.75–8727) |
| Median abstracted charge (IQR) | 15 462 (9285–28 318) | 18 384 (10 440–36 248.25) | 14 943 (9082–26 269) |
| Median CMS adjusted cost (IQR) | 5118 (3070–9142) | 6022.5 (3455–11696) | 4926 (3000–8501) |
| Median CMS adjusted abstracted charge (IQR) | 15 132 (9131–27512.25) | 18 072 (10 334–35 567) | 14 599 (8925–25 599) |
| Survival, n (%) | |||
| Survived to discharge | 203 725 (99.93) | 291 791 (99.8) | 195 173 (99.97) |
ECMO, extracorporeal membrane oxygenation.
a
3M APG-DRG (version 32) “Bronchiolitis and RSV Pneumonia” (group 138).