TABLE 2.
Pre— and Post—Propensity Match Cohort Characteristics of Patients Admitted to the Inpatient Floor
| Prematch |
Postmatch |
||||
|---|---|---|---|---|---|
| No IVMg | IVMg | No IVMg | IVMg | Std Diff | |
|
| |||||
| N or n (%) | 65 427 (71.7) | 25 882 (28.4) | 15 030 | 15 030 | — |
| Age group, n (%), y | |||||
| <5 | 33 979 (51.9) | 9266 (35.8) | 6364 (42.3) | 6276 (41.8) | 0.006 |
| 5–11 | 25 241 (38.6) | 12 659 (48.9) | 6713 (44.7) | 6825 (45.4) | −0.007 |
| 12–17 | 6207 (9.5) | 3957 (15.3) | 1953 (13.0) | 1929 (12.8) | 0.002 |
| CCC count, n (%) | |||||
| 0 | 60 340 (92.2) | 24 417 (94.3) | 14 042 (93.4) | 13 996 (93.1) | 0.003 |
| 1 | 3831 (5.9) | 1277 (4.9) | 833 (5.5) | 884 (5.9) | −0.003 |
| 2+ | 1256 (1.9) | 188 (0.7) | 155 (1.0) | 150 (1.0) | 0.000 |
| No. asthma encounters in previous y (%) | |||||
| 0 | 46 539 (71.1) | 16 362 (63.2) | 10 096 (67.2) | 9782 (65.1) | 0.021 |
| 1–2 | 14 988 (22.9) | 7490 (28.9) | 3906 (26) | 4140 (27.5) | −0.016 |
| 3+ | 3900 (6.0) | 2030 (7.8) | 1028 (6.8) | 1108 (7.4) | −0.005 |
| Non-Hispanic Black race, n (%) | 25 914 (39.6) | 12 979 (50.1) | 6957 (46.3) | 6964 (46.3) | 0.000 |
| Hispanic, n (%) | 13 059 (20.0) | 4896 (18.9) | 2779 (18.5) | 3202 (21.3) | −0.028 |
| IV steroids use on d 1, n (%) | 15 991 (24.4) | 13 430 (51.9) | 6750 (44.9) | 6750 (44.9) | 0.000 |
| Ipratropium use on d 1, n (%) | 40 888 (62.5) | 21 276 (82.2) | 11 324 (75.3) | 1 309 (75.2) | 0.001 |
| IV fluids on d 1, n (%) | 17 733 (27.1) | 18 691 (72.2) | 9112 (60.6) | 9131 (60.8) | −0.001 |
| Chest radiograph, n (%) | 23 013 (35.2) | 10 202 (39.4) | 6115 (40.7) | 5991 (39.9) | 0.008 |
| Blood gas on d 1, n (%) | 2399 (3.7) | 2816 (10.9) | 1206 (8) | 1212 (8.1) | 0.000 |
All prematch comparisons are significant at P < .001. Std Diff, standardized difference; —, not applicable.