Table 1

Patient Characteristics by Group and Overall

CharacteristicUsual Care Group
(n = 13,410)
Access to Booklet Group
(n = 11,945)
Total
(N = 25,355)
Age, mean (SD), y3.2 (2.7)3.3 (2.7)3.2 (2.7)
Male, No. (%)7,100 (52.9)6,313 (52.9)13,413 (52.9)
Parent socioeconomic status, No. (%)a
 Low2,261 (16.9)1,826 (15.4)4,087 (16.2)
 Middle9,055 (67.8)8,459 (71.5)17,514 (69.5)
 High2,032 (15.2)1,550 (13.1)3,582 (14.2)
Top ICPC codes, No. (%)
 A03.00: fever2,471 (18.5)2,174 (18.2)4,645 (18.4)
 R74.00: acute upper respiratory tract infection2,653 (19.8)2,357 (19.9)5,010 (19.8)
 H71.00: acute otitis media/myringitis1,872 (14.0)1,604 (13.5)3,476 (13.8)
  • ICPC = International Classification of Primary Care.

  • a Socioeconomic status numbers do not add up to totals in column because of missing data.