Table 2.

Host and Environmental Characteristics of Children With Recurrent Otitis Media (ROM) in the United States, 1981 and 1988

19811988RR−CI+CIP Value
% ROMn% ROMn
Number of children in household
 <419.6477127.656771.41.31.5<.001
 ≥413.532624.54031.81.22.6.001
Birth order
 First born21.068331.18131.51.21.8<.001
 Not first born18.8215126.125841.41.21.6<.001
 Only child17.2226927.526851.61.41.8<.001
Smoked during pregnancy
 Yes19.3120027.914471.51.21.7<.001
 No18.5398926.647621.41.31.6<.001
Respiratory allergy
 Yes41.613046.02121.10.81.5.52
 No18.1505926.259971.51.31.6<.001
Hay Fever
 Yes36.79252.21811.41.02.0.04
 No18.3509726.160281.41.31.5<.001
Food/digestive allergy
 Yes34.84943.24051.20.81.8.26
 No18.5514025.858041.41.31.5<.001
Asthma
 Yes32.819547.52541.51.11.9.005
 No18.0499426.059551.41.31.6<.001
At least one allergy listed above
 Yes32.971340.711391.21.11.4.004
 No16.4447623.850701.51.31.6<.001
Day care center
 Yes28.841337.93751.31.01.7.02
 No17.9477626.358341.51.41.6<.001
Nursery
 Yes26.022336.910651.41.11.8.001
 No18.4496624.851441.41.21.5<.001
Day care or nursery
 Yes27.663037.113661.31.21.5<.001
 No17.6455924.248431.41.31.5<.001
Related sitter
 Yes18.087427.316761.51.31.8<.001
 No18.8431526.745331.41.31.6<.001
Unrelated sitter
 Yes23.274632.712851.41.21.7<.001
 No16.7380725.549241.51.41.7<.001
  • Abbreviations: ROM, recurrent otitis media; RR, relative risk; CI, confidence interval.