Table 3. Relative Risk of Atopic Dermatitis Associated With Infant Exposure to Antibiotics
Age at Exposure to AntibioticsEczema, % (n/N)RR (95% CI)P Value
<24 Hours
    Yes38.7 (12/32)1.43 (0.92–2.24).186
    No27.1 (125/461)
<7 Days
    Yes35.9 (14/39)1.32 (0.88–1.99).245
    No27.2 (123/453)
<30 Days
    Yes30.5 (18/59)1.11 (0.74–1.67).627
    No27.5 (119/433)
<1 Year
    Yes30.2 (80/265)1.19 (0.89–1.59).235
    No25.1 (57/227)
By 2 years
    Yes23.6 (103/348)1.26 (0.9–1.77).163
    No23.6 (34/144)
  • CI, confidence interval; RR, relative risk.