Table 4.

Comparisons of Characteristics and Procedures of Children in the United States by Year, 1981 and 1988

19811988OR95% CIP Value
All children <6 years
 Recurrent otitis media18.7%26.9%1.61.41.7<.001
 Day care/nursery11%21%2.22.02.5<.001
 OOHC/US20%18%.9.8.97.01
 Allergies14%18%1.41.21.5<.001
 Maternal employment40%51%1.51.41.7<.001
 Ear operation 1.3% 2.4%1.81.32.6<.001
In infants <1 year
 Recurrent otitis media 5.6%10.3%1.91.32.9.001
 Day care/nursery 2% 5%2.31.34.0.007
 OOHC/US*10%16%1.71.32.2<.001
 Allergies 7%12%1.91.32.7.001
 Maternal employment33%45%1.61.42.0<.001
 Ear operation 0.2% 0.5%2.70.325.8.36
  • Abbreviations: OR, odds ratio; CI, confidence interval; OOHC/US, out-of-home care by an unrelated sitter.