TABLE 2

Characteristics of the Study Population, Stratified by Off-label Status

Overall (N = 2 773 770)Off-label Usage (n = 779 270), n (%)No Off-label Usage (n = 1 994 500), n (%)
Age
 ≤28 d87 32444 506 (51.0)42 818 (49.0)
 29 d–1 y639 652286 666 (44.8)352 986 (55.2)
 2–5 y759 503160 836 (21.1)598 667 (78.8)
 6–12 y776 361177 579 (22.9)598 782 (77.1)
 13+ y510 930109 683 (21.5)401 247 (78.5)
Sex
 Boys1 505 561451 678 (30.0)1 053 883 (70.0)
 Girls1 267 900327 466 (25.8)940 434 (74.2)
Race
 White1 510 569460 818 (30.5)1 049 751 (69.5)
 African American641 279151 186 (23.6)490 093 (76.4)
 Other505 786137 089 (27.1)368 697 (72.9)
Insurance type
 Public1 602 570423 162 (26.4)1 179 408 (73.6)
 Private988 218310 822 (31.5)677 396 (68.6)
 Other171 85642 588 (24.8)129 268 (75.2)
Encounter type
 Inpatient532 850287 153 (53.9)245 697 (46.1)
 Observational189 87486 351 (45.5)103 523 (54.5)
 Ambulatory442 818239 915 (54.2)202 903 (45.8)
 Emergency department1 451 426149 969 (10.3)1 301 457 (89.7)
 Clinic visit87 3427543 (8.6)79 799 (91.4)
 Other69 4388337 (12.0)61 101 (88.0)
Length of stay
 ≤1 d2 320 730528 843 (22.8)1 791 887 (77.2)
 >1 d453 040250 427 (55.3)202 613 (44.7)
Discharge disposition
 Discharged2 647 285739 921 (28.0)1 907 364 (72.0)
 Transferred37 16114 175 (38.1)22 986 (61.9)
 Died48514215 (86.9)636 (13.1)
 Other99711103 (11.1)8868 (88.9)