Table 4.

CF Infants Before LRI: Baseline Demographic Measures and Medical Status

CF URI-Only (n = 17)CF LRI
(n = 13)
Family/social/medical history
 Daycare1 /17 (6%)2/13 (15%)
 ETS exposure4 /17 (24%)6 /13 (46%)
 Family history of allergies13 /17 (76%)10 /13 (77%)
 Family history of asthma11 /17 (55%)5 /12 (41%)
 SES score44 ± 1533 ± 17
 Brasfield radiographic score23 ± 2 20 ± 3
 Modified Shwachman clinical score84 ± 15 >70 ± 17*
 Medication
  Bronchodilator (inhaled)10 /17 (59%)10 /13 (77%)
  Steroids (oral/inhaled)1 /17 (6%)2 /13 (15%)
  Cromolyn sodium4 /17 (24%)5 /13 (38%)
Pseudomonas aeruginosacolonization8 /17 (47%)8 /13 (62%)
Staphylococcus aureus colonization6 /17 (35%)5 /13 (38%)
Anthropometric measurements
 Age (mo)10 ± 6 10 ± 7 
 Weight (kg)8.07 ± 2.676.51 ± 3.00
 Length (cm)70 ± 1066 ± 12
 Weight/length (%)37 ± 25 >19 ± 18*
 Weight/length Z score−0.48 ± −0.9 −1.29 ± 1.1*
 Sex (M/F)14 /17 (82%)6 /13 (46%)*
  • Data are expressed as percentages or as mean ± standard deviation (SD) values.

    Abbreviations: CF URI-only, cystic fibrosis infants who had only upper respiratory tract infections during the respiratory virus season; CF LRI, cystic fibrosis infants who had at least one lower respiratory tract infection during the respiratory virus season.

  • * P < .05;

  • P < .01, both compared with CF URI-only group.