Morbidity data were collected for a median of 182 d (interquartile
range 180–184 d) for the three intervention groups.
Incidence rates and rate ratios for respiratory- and diarrhearelated
illnesses and their symptoms are presented in Table 3.
There was evidence of a lower incidence rate of respiratoryrelated
illnesses and fewer symptoms of runny nose, cough,
and fever for children in group III compared with children in
groups I and II, but not for sore throat, skin rash, and other
respiratory-related symptoms, such as headache and constipation.
Furthermore, despite the undistinguished incidence
rate of vomiting, nausea, and stomach pain, the rate of diarrhearelated
illness was significantly lower for children in group III
than for those in groups I and II. The rate ratios were of similar
magnitude to those observed for respiratory-related and
diarrhea-related illnesses and symptoms.