TABLE 2.
Diagnostic Testing and Treatment of the Cohort Stratified by Age Group
| Age Category, y | ||||
|---|---|---|---|---|
| Overall, % | 1–5, % | 6–12, % | 13–18, % a | |
| n = 19 710 | n = 13 778 | n = 4842 | n = 1090 | |
| Diagnostic testing | ||||
| CBC | 9830 (50) | 6815 (50) | 2399 (50) | 616 (57) |
| Serum electrolytes | 5635 (29) | 3790 (28) | 1432 (30) | 413 (38) |
| Blood culture | 7853 (40) | 5595 (41) | 1826 (38) | 432 (40) |
| C-reactive protein | 3553 (18) | 2345 (17) | 944 (20) | 264 (24) |
| Viral testing (RSV, influenza) | 5251 (27) | 3900 (28) | 1113 (23) | 238 (22) |
| CXR | 12 358 (63) | 8770 (64) | 2953 (61) | 635 (58) |
| Initial antibiotic therapy | ||||
| Penicillin/Aminopenicillins | 5430 (28) | 4237 (31) | 1020 (21) | 173 (16) |
| Macrolide (alone or in combination) | 7364 (37) | 4080 (30) | 2610 (54) | 674 (62) |
RSV, respiratory syncytial virus.
a
P value <.001 for all comparisons across age categories.