TABLE 2.
Health Care Resource Utilization During 1-Year Pre-Index Period
| Hospitalizations, ED visits, and physician specialties | Patients with COPD with NTMLD (n = 3,756) | Patients with COPD without NTMLD (n = 11,268) |
|---|---|---|
| All-cause hospitalizations | ||
| Counts among all patients, mean (SD); median (Q1, Q3) | 0.85 (1.25); 0 (0,1) | 0.52 (1.07); 0 (0,1) |
| 1, n (%) | 999 (26.6) | 1,980 (17.6) |
| 2-3, n (%) | 650 (17.3) | 1,027 (9.1) |
| ≥ 4, n (%) | 143 (3.8) | 307 (2.7) |
| Respiratory-associated hospitalizations | ||
| Counts among all patients, mean (SD); median (Q1, Q3) | 0.52 (0.90); 0 (0,1) | 0.17 (0.54); 0 (0,0) |
| 1, n (%) | 895 (23.8) | 998 (8.9) |
| 2-3, n (%) | 361 (9.6) | 303 (2.7) |
| ≥ 4, n (%) | 49 (1.3) | 48 (0.4) |
| COPD-associated hospitalizations | ||
| Counts among all patients, mean (SD); median (Q1, Q3) | 0.15 (0.49); 0 (0,0) | 0.06 (0.30); 0 (0,0) |
| 1, n (%) | 354 (9.4) | 431 (3.8) |
| 2-3, n (%) | 82 (2.2) | 93 (0.8) |
| ≥ 4, n (%) | 10 (0.3) | 7 (0.1) |
| ED visit followed by hospitalization | ||
| Counts among all patients, mean (SD); median (Q1, Q3) | 0.55 (0.97); 0 (0,1) | 0.36 (0.86); 0 (0,0) |
| 1, n (%) | 839 (22.3) | 1,600 (14.2) |
| 2-3, n (%) | 381 (10.1) | 715 (6.4) |
| ≥ 4, n (%) | 81 (2.2) | 164 (1.5) |
| ED visit without subsequent hospitalization | ||
| Counts among all patients, mean (SD); median (Q1, Q3) | 1.02 (2.49); 0 (0,1) | 0.85 (2.12); 0 (0,1) |
| 1, n (%) | 596 (15.9) | 1,472 (13.1) |
| 2-3, n (%) | 513 (13.7) | 1,318 (11.7) |
| ≥ 4, n (%) | 315 (8.4) | 801 (7.1) |
| Visits to pulmonologista | ||
| Counts among all patients, mean (SD); median (Q1, Q3) | 9.91 (12.20); 6 (2, 13) | 1.87 (5.68); 0 (0, 0) |
| 1, n (%) | 187 (5.0) | 332 (2.9) |
| 2-3, n (%) | 404 (10.8) | 654 (5.8) |
| ≥ 4, n (%) | 2,463 (65.6) | 1,682 (14.9) |
| Visits to ID specialista | ||
| Counts among all patients, mean (SD); median (Q1, Q3) | 2.12 (8.42); 0 (0, 1) | 0.35 (3.64); 0 (0, 0) |
| 1, n (%) | 219 (5.8) | 65 (0.6) |
| 2-3, n (%) | 269 (7.2) | 139 (1.2) |
| ≥ 4, n (%) | 575 (15.3) | 257 (2.3) |
a A significantly higher proportion of patients with COPD with NTMLD than patients with COPD without NTMLD had visits to pulmonologists and ID specialists (P < 0.0001, Wilcoxon signed-rank test for continuous variables).
COPD = chronic obstructive pulmonary disease; ED = emergency department; ID = infectious disease; NTMLD = nontuberculous mycobacterial lung disease; Q = quartile.