TABLE 1

Characteristics of Cohort by Disposition

Cohort, N = 3304 (%)No Pneumonia Revisit, n = 3156 (95.5%)Pneumonia Revisit, n = 148 (4.5%)P
Demographics
 Age (median, IQR)3.0 (1, 7)3.0 (1, 7)3.0 (1, 6)<.01
 Boys1701 (51.5)1616 (51.2)85 (57.4).14
 Race
  White1887 (57.3)1809 (57.6)78 (52.7).70
  African American977 (29.7)928 (29.5)49 (33.1)
  Other427 (13.0)406 (12.9)21 (14.2)
 Ethnicity
  Hispanic222 (6.8)214 (6.9)8 (5.4).75
  Non-Hispanic3046 (93.2)2906 (93.1)140 (94.6)
  Unknown2 (0.1)2 (0.1)0
 Insurance
  Private1241 (37.6)1190 (37.7)51 (34.5).63
  Public1978 (59.9)1884 (59.7)94 (63.5)
  Self-pay and/or other85 (2.6)82 (2.6)3 (2.0)
Medical history
 CCC418 (12.7)396 (12.6)22 (14.9).40
 Asthma658 (19.9)634 (20.1)24 (16.2).25
 Medical history of asthma803 (24.3)770 (24.4)33 (22.3).56
 Medical history of pneumonia282 (8.5)266 (8.4)16 (10.8).31
ED presentation
 Triage
  1, highest risk8 (0.2)7 (0.22)1 (0.7).42
  21012 (30.8)974 (31.0)38 (25.9)
  31279 (38.9)1223 (38.9)56 (38.1)
  4793 (24.1)752 (23.9)41 (27.9)
  5, lowest risk199 (6.1)188 (6.0)11 (7.5)
 Season
  Fall694 (21)665 (21.1)29 (19.6).23
  Spring870 (26.3)838 (26.6)32 (21.6)
  Summer368 (11.1)345 (10.9)23 (15.5)
  Winter1372 (41.5)1308 (41.4)64 (43.2)
 Fever at ED presentation1721 (53.2)1635 (52.9)86 (59.3).13
 Tachycardia at 90th percentile for age2792 (85.0)2673 (85.1)119 (81.5).23
 Tachypnea 90th percentile for age2263 (69.0)2167 (69.1)96 (65.8).39
 Oxygen saturation
  >942055 (64.7)1949 (64.3)106 (73.6).12
  92–93664 (20.9)639 (21.1)25 (17.4)
  90–91180 (5.7)175 (5.8)5 (3.5)
  <90276 (8.7)268 (8.8)8 (5.6)
IVFs given in ED752 (22.8)723 (22.9)29 (19.6).35
 Antibiotic given in the ED1537 (46.6)1481 (46.9)56 (37.8).03
  Cephalosporin662 (20.0)633 (20.1)29 (19.6).89
  Clindamycin68 (2.1)63 (2.0)5 (3.4).23
  Aminopenicillin610 (18.5)593 (18.8)17 (11.5).03
  Macrolide282 (8.5)276 (8.8)6 (4.1).05
  Othera45 (1.4)44 (1.4)1 (0.7).72
Laboratory and imaging tests
 CXR performed2878 (87.1)2751 (87.2)127 (85.8).63
  Effusion present on CXR135 (4.1)130 (4.1)5 (3.4).66
 Blood culture performed804 (24.3)776 (24.6)28 (18.9).12
  Blood culture positive17 (2.1)17 (2.1)0.99
 CBC performed864 (26.2)827 (26.2)37 (25.0).74
 Respiratory panel performed169 (5.1)160 (5.1)9 (6.1).59
Admitted to the hospital at index visit1448 (43.8)1406 (44.6)42 (28.4)<.01
  • CBC, complete blood count; CXR, chest radiograph; IQR, interquartile range; IVFs, intravenous fluids.

  • a Other antibiotics include aminoglycoside, sulfonamides, vancomycin, and linezolid.