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. Author manuscript; available in PMC: 2022 Aug 1.
Published in final edited form as: Hosp Pediatr. 2021 Jul 1;11(8):785–793. doi: 10.1542/hpeds.2020-004770

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.