TABLE 1

Standard Care and Booster Intervention Units Demographic Characteristics

Variable12 mo (n = 532)24 mo (n = 479)36 mo (n = 480)
NonboosterBoosterPaNonboosterBoosterPaNonboosterBoosterPa
Age.97.13.17
 Infant (<365 d)107 (41.0)117 (43.2)83 (34.7)94 (39.3)77 (32.2)103 (42.9)
 Toddler (1–3 y)39 (14.9)40 (14.8)31 (13.0)44 (18.4)41 (17.2)38 (15.8)
 Preschool-aged (4–6 y)19 (7.3)19 (7.0)24 (10.0)18 (7.5)25 (10.5)18 (7.5)
 School-aged (7–12 y)45 (17.2)41 (15.1)53 (22.2)36 (15.1)43 (18.0)34 (14.2)
 Adolescent (13-18 y)51 (19.5)54 (19.9)48 (20.1)47 (19.7)53 (22.2)47 (19.6)
Male154 (58.6)147 (54.0).30131 (54.8)138 (57.5).58132 (55.0)123 (51.3).46
Primary diagnosis.10.11.39
 Acute233 (88.6)253 (93.0)201 (84.1)214 (89.2)196 (81.7)204 (85.0)
 Chronic30 (11.4)19 (7.0)38 (15.9)26 (10.8)44 (18.3)36 (15.0)
Surgery in previous 24 h20 (7.6)6 (2.2).00413 (5.4)15 (6.3).8525 (10.4)14 (5.8).09
Mechanical tracheal ventilation17 (6.5)14 (5.2).5816 (6.7)16 (6.7)>.9915 (6.3)7 (2.9).12
Continuous sedative or analgesic infusion17 (6.5)34 (12.5).01932 (13.3)32 (13.3)>0.9930 (12.5)18 (7.5).09
  • a Rao-Scott χ2 test of association (adjusting for clustered nature of data) used to determine between-group differences in demographic and clinical factors at each time point.